cleanups

bugfix to match speed
gemm passes spec
2025-07-23 16:36:37 -07:00 · 2025-07-23 16:24:38 -07:00 · 2025-07-23 15:50:01 -07:00 · 2025-07-23 15:35:57 -07:00 · 2025-07-23 14:37:48 -07:00
62 changed files with 483 additions and 8755 deletions
@@ -112,16 +112,7 @@ runs:
        fi

    # ******************* apt *******************
-    - name: Setup apt
-      if: runner.os == 'Linux' && (inputs.opencl == 'true' || inputs.amd == 'true' || inputs.cuda == 'true' || inputs.webgpu == 'true' || inputs.llvm == 'true')
-      shell: bash
-      run: |
-        sudo chown -R $USER:$USER /var/cache/apt/archives

-        echo 'Acquire::GzipIndexes "true";' | sudo tee /etc/apt/apt.conf.d/gzip
-        echo 'Acquire::http::Pipeline-Depth "5";' | sudo tee -a /etc/apt/apt.conf.d/99parallel
-        echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' | sudo tee -a /etc/apt/apt.conf.d/99keep-debs
-    
    - name: Add OpenCL Repo
      if: inputs.opencl == 'true' && runner.os == 'Linux'
      shell: bash
@@ -144,11 +135,14 @@ runs:
        wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key | sudo tee /etc/apt/trusted.gpg.d/apt.llvm.org.asc
        echo "deb http://apt.llvm.org/$(lsb_release -cs)/ llvm-toolchain-$(lsb_release -cs)-20 main" | sudo tee /etc/apt/sources.list.d/llvm.list

-    - name: Compute Package List + Hash
+    - name: apt-get update + install
      if: runner.os == 'Linux' && (inputs.opencl == 'true' || inputs.amd == 'true' || inputs.cuda == 'true' || inputs.webgpu == 'true' || inputs.llvm == 'true')
-      id: apt-pkgs
      shell: bash
      run: |
+        echo 'Acquire::GzipIndexes "true";' | sudo tee /etc/apt/apt.conf.d/gzip
+        echo 'Acquire::http::Pipeline-Depth "5";' | sudo tee -a /etc/apt/apt.conf.d/99parallel
+        sudo apt -qq update || true
+
        pkgs=""
        # **** OpenCL ****
        if [[ "${{ inputs.opencl }}" == "true" ]]; then
@@ -159,7 +153,7 @@ runs:
        fi
        # **** AMD ****
        if [[ "${{ inputs.amd }}" == "true" ]]; then
-          pkgs+=" hsa-rocr comgr hsa-rocr-dev liburing-dev libibverbs-dev libc6-dev"
+          pkgs+=" hsa-rocr comgr hsa-rocr-dev liburing-dev libc6-dev"
        fi
        # **** CUDA ****
        if [[ "${{ inputs.cuda }}" == "true" ]]; then
@@ -174,31 +168,14 @@ runs:
        if [[ "${{ inputs.llvm }}" == "true" ]]; then
          pkgs+=" libllvm20 clang-20 lld-20"
        fi
-        
-        echo "pkgs=$pkgs" >> "$GITHUB_OUTPUT"
-        echo "hash=$(echo -n "$pkgs" | sha256sum | cut -d' ' -f1)" >> "$GITHUB_OUTPUT"

-    - name: Cache apt
-      if: runner.os == 'Linux' && (inputs.opencl == 'true' || inputs.amd == 'true' || inputs.cuda == 'true' || inputs.webgpu == 'true' || inputs.llvm == 'true')
-      uses: actions/cache@v4
-      with:
-        path: /var/cache/apt/archives/
-        key: ${{ runner.os }}-apt-${{ steps.apt-pkgs.outputs.hash }}
-
-    - name: Run apt Update + Install
-      if: runner.os == 'Linux' && (inputs.opencl == 'true' || inputs.amd == 'true' || inputs.cuda == 'true' || inputs.webgpu == 'true' || inputs.llvm == 'true')
-      shell: bash
-      run: |
-        sudo apt -qq update || true
-        
        # ******** do install ********
-        if [[ -n "${{ steps.apt-pkgs.outputs.pkgs }}" ]]; then
-          sudo apt-get -y --allow-unauthenticated --no-install-recommends install ${{ steps.apt-pkgs.outputs.pkgs }}
+        if [[ -n "$pkgs" ]]; then
+          sudo apt-get -y --allow-unauthenticated --no-install-recommends install $pkgs
        fi
-        
-        sudo chown -R $USER:$USER /var/cache/apt/archives/
-    
+
    # **** AMD ****
+
    - name: Setup AMD (Linux)
      if: inputs.amd == 'true' && runner.os == 'Linux'
      shell: bash
@@ -251,7 +228,7 @@ runs:
      shell: bash
      run: |
        cd ${{ github.workspace }}/gpuocelot/ocelot/build
-        sudo cp libgpuocelot.${{ runner.os == 'macOS' && 'dylib' || 'so' }} /usr/${{ runner.os == 'macOS' && 'local/' || '' }}lib/
+        sudo cp libgpuocelot.${{ runner.os == 'macOS' && 'dylib' || 'so' }} /usr/${{ runner.os == 'macOS' && 'local/' || ''}}lib/

    # **** WebGPU ****

@@ -637,125 +637,3 @@ jobs:
          openpilot_0_9_7.txt
          openpilot_image_0_9_4.txt
          openpilot_image_0_9_7.txt
-
-  testreddriverbenchmark:
-    name: AM Benchmark
-    runs-on: [self-hosted, Linux, tinyboxrandom]
-    timeout-minutes: 15
-    defaults:
-      run:
-        shell: bash -e -o pipefail {0}
-    if: github.repository_owner == 'tinygrad'
-    steps:
-    - name: Checkout Code
-      uses: actions/checkout@v4
-    - name: Remove amdgpu
-      run: sudo rmmod amdgpu || true
-    - name: Cleanup running AM processes
-      run: python extra/amdpci/am_smi.py --pids --kill
-    - name: Symlink models and datasets
-      run: |
-        mkdir -p weights
-        ln -s ~/tinygrad/weights/bpe_simple_vocab_16e6.txt.gz weights/bpe_simple_vocab_16e6.txt.gz
-        ln -s ~/tinygrad/weights/LLaMA weights/LLaMA
-        ln -s ~/tinygrad/extra/datasets/cifar-10-python.tar.gz extra/datasets/cifar-10-python.tar.gz
-        ln -s /raid/weights/mixtral-8x7b-32kseqlen weights/mixtral-8x7b-32kseqlen
-        ln -s /raid/weights/LLaMA-2 weights/LLaMA-2
-        mkdir -p extra/datasets
-        ln -s /raid/datasets/imagenet extra/datasets/imagenet
-    - name: setup staging db
-      if: github.ref == 'refs/heads/update_benchmark_staging'
-      run: |
-        echo "CACHEDB=/tmp/staging.db" >> $GITHUB_ENV
-        rm -f /tmp/staging.db /tmp/staging.db-shm /tmp/staging.db-wal
-    - name: reset process replay
-      run: test/external/process_replay/reset.py
-    - name: Test driver cold start time
-      run: time DEBUG=3 AMD=1 AM_RESET=1 python3 test/test_tiny.py TestTiny.test_plus
-    - name: Test driver warm start time
-      run: time DEBUG=3 AMD=1 python3 test/test_tiny.py TestTiny.test_plus
-    # Fails on 9070
-    # - name: Test tensor cores
-    #   run: |
-    #     AMD=1 AMD_LLVM=0 python3 test/test_linearizer.py TestLinearizer.test_tensor_cores TestLinearizer.test_tensor_cores_padded_amd TestLinearizer.test_tensor_cores_padded_uops
-    #     AMD=1 python3 test/test_linearizer.py TestLinearizer.test_tensor_cores TestLinearizer.test_tensor_cores_padded_amd TestLinearizer.test_tensor_cores_padded_uops
-    #     AMD=1 SHOULD_USE_TC=1 BFLOAT16=1 DEBUG=2 python3 extra/gemm/simple_matmul.py
-    - name: Run Tensor Core GEMM (AMD)
-      run: AMD=1 SHOULD_USE_TC=1 HALF=1 DEBUG=2 ATOL=2e-2 python3 extra/gemm/simple_matmul.py | tee am_matmul_amd.txt
-    - name: Test AMD=1
-      run: DEBUG=2 AMD=1 python -m pytest -rA test/test_tiny.py
-    - name: Test DISK copy time
-      run: AMD=1 TESTFILE=/raid/downloads/llama3-8b-sfr/model-00001-of-00004.safetensors python3 test/external/external_benchmark_disk_raw.py
-    - name: Run full CIFAR training w 1 GPU
-      run: time BENCHMARK_LOG=cifar AMD=1 DEFAULT_FLOAT=HALF LATEWINO=1 STEPS=1000 TARGET_EVAL_ACC_PCT=93.2 python3 examples/hlb_cifar10.py | tee am_train_cifar_one_gpu.txt
-    - name: Run 10 MLPerf ResNet50 training steps (1 gpu)
-      run: BENCHMARK_LOG=resnet_10steps AMD=1 MNISTMOCK=1 DEFAULT_FLOAT=HALF BENCHMARK=10 BS=256 GPUS=1 MODEL=resnet python3 examples/mlperf/model_train.py | tee am_train_resnet_one_gpu.txt
-    - name: Run 10 MLPerf Bert training steps (1 gpu)
-      # TODO: remove BERT_LAYERS once scheduler is fast
-      run: BENCHMARK_LOG=bert_10steps AMD=1 CAPTURE_PROCESS_REPLAY=0 DEFAULT_FLOAT=HALF BENCHMARK=10 BS=66 GPUS=1 BERT_LAYERS=2 FUSE_ARANGE=1 FUSE_ARANGE_UINT=0 MODEL=bert python3 examples/mlperf/model_train.py | tee am_train_bert_one_gpu.txt
-    - uses: actions/upload-artifact@v4
-      with:
-        name: Speed (AM Driver)
-        path: |
-          am_matmul_amd.txt
-          am_train_cifar_one_gpu.txt
-          am_train_resnet_one_gpu.txt
-          am_train_bert_one_gpu.txt
-    - name: Run process replay tests
-      run: cp test/external/process_replay/process_replay.py ./process_replay.py && git fetch origin master && git -c advice.detachedHead=false checkout origin/master && PYTHONPATH=. python3 process_replay.py
-
-  testgreendriverbenchmark:
-    name: NV Benchmark
-    runs-on: [self-hosted, Linux, tinyboxrandom]
-    timeout-minutes: 15
-    defaults:
-      run:
-        shell: bash -e -o pipefail {0}
-    if: github.repository_owner == 'tinygrad'
-    steps:
-    - name: Checkout Code
-      uses: actions/checkout@v4
-    - name: Remove nv modules
-      run: ./extra/nvpci/nv_smi.py rmmod
-    - name: Symlink models and datasets
-      run: |
-        mkdir -p weights
-        ln -s ~/tinygrad/weights/bpe_simple_vocab_16e6.txt.gz weights/bpe_simple_vocab_16e6.txt.gz
-        ln -s ~/tinygrad/weights/LLaMA weights/LLaMA
-        ln -s ~/tinygrad/extra/datasets/cifar-10-python.tar.gz extra/datasets/cifar-10-python.tar.gz
-        ln -s /raid/weights/mixtral-8x7b-32kseqlen weights/mixtral-8x7b-32kseqlen
-        ln -s /raid/weights/LLaMA-2 weights/LLaMA-2
-        mkdir -p extra/datasets
-        ln -s /raid/datasets/imagenet extra/datasets/imagenet
-    - name: setup staging db
-      if: github.ref == 'refs/heads/update_benchmark_staging'
-      run: |
-        echo "CACHEDB=/tmp/staging.db" >> $GITHUB_ENV
-        rm -f /tmp/staging.db /tmp/staging.db-shm /tmp/staging.db-wal
-    - name: reset process replay
-      run: test/external/process_replay/reset.py
-    - name: Test driver start time
-      run: time DEBUG=3 NV=1 python3 test/test_tiny.py TestTiny.test_plus
-    - name: Test tensor cores
-      run: NV=1 ALLOW_TF32=1 python3 test/test_linearizer.py TestLinearizer.test_tensor_cores TestLinearizer.test_tensor_cores_padded TestLinearizer.test_tensor_cores_padded_uops
-    - name: Test DISK copy time
-      run: NV=1 TESTFILE=/raid/downloads/llama3-8b-sfr/model-00001-of-00004.safetensors python3 test/external/external_benchmark_disk_raw.py
-    - name: Test LLAMA-3
-      run: BENCHMARK_LOG=llama3_beam NV=1 JITBEAM=2 IGNORE_BEAM_CACHE=1 python3 examples/llama3.py --size 8B --benchmark --temperature 0 | tee nv_llama3_beam.txt
-    - name: Run full CIFAR training w 1 GPU
-      run: time BENCHMARK_LOG=cifar AMD=1 DEFAULT_FLOAT=HALF LATEWINO=1 STEPS=1000 TARGET_EVAL_ACC_PCT=93.2 python3 examples/hlb_cifar10.py | tee nv_train_cifar_one_gpu.txt
-    - name: Run 10 MLPerf ResNet50 training steps (1 gpu)
-      run: BENCHMARK_LOG=resnet_10steps NV=1 MNISTMOCK=1 DEFAULT_FLOAT=HALF BENCHMARK=10 BS=256 GPUS=1 MODEL=resnet python3 examples/mlperf/model_train.py | tee nv_train_resnet_one_gpu.txt
-    - name: Run 10 MLPerf Bert training steps (1 gpu)
-      # TODO: remove BERT_LAYERS once scheduler is fast
-      run: BENCHMARK_LOG=bert_10steps NV=1 CAPTURE_PROCESS_REPLAY=0 DEFAULT_FLOAT=HALF BENCHMARK=10 BS=66 GPUS=1 BERT_LAYERS=2 FUSE_ARANGE=1 FUSE_ARANGE_UINT=0 MODEL=bert python3 examples/mlperf/model_train.py | tee nv_train_bert_one_gpu.txt
-    - uses: actions/upload-artifact@v4
-      with:
-        name: Speed (NV Driver)
-        path: |
-          nv_llama3_beam.txt
-          nv_train_cifar_one_gpu.txt
-          nv_train_resnet_one_gpu.txt
-          nv_train_bert_one_gpu.txt
-    - name: Run process replay tests
-      run: cp test/external/process_replay/process_replay.py ./process_replay.py && git fetch origin master && git -c advice.detachedHead=false checkout origin/master && PYTHONPATH=. python3 process_replay.py
@@ -132,13 +132,10 @@ jobs:
      run: |
        cp tinygrad/runtime/autogen/libc.py /tmp/libc.py.bak
        cp tinygrad/runtime/autogen/io_uring.py /tmp/io_uring.py.bak
-        cp tinygrad/runtime/autogen/ib.py /tmp/ib.py.bak
        ./autogen_stubs.sh libc
        ./autogen_stubs.sh io_uring
-        ./autogen_stubs.sh ib
        diff /tmp/libc.py.bak tinygrad/runtime/autogen/libc.py
        diff /tmp/io_uring.py.bak tinygrad/runtime/autogen/io_uring.py
-        diff /tmp/ib.py.bak tinygrad/runtime/autogen/ib.py
    - name: Verify WebGPU autogen
      run: |
        cp tinygrad/runtime/autogen/webgpu.py /tmp/webgpu.py.bak
@@ -240,21 +240,6 @@ generate_io_uring() {
  fixup $BASE/io_uring.py
 }

-generate_ib() {
-  clang2py -k cdefstum \
-    /usr/include/infiniband/verbs.h \
-    /usr/include/infiniband/verbs_api.h \
-    /usr/include/infiniband/ib_user_ioctl_verbs.h \
-    /usr/include/rdma/ib_user_verbs.h \
-    -o $BASE/ib.py
-
-  sed -i "s\import ctypes\import ctypes, ctypes.util\g" "$BASE/ib.py"
-  sed -i "s\FIXME_STUB\libibverbs\g" "$BASE/ib.py"
-  sed -i "s\FunctionFactoryStub()\ctypes.CDLL(ctypes.util.find_library('ibverbs'), use_errno=True)\g" "$BASE/ib.py"
-
-  fixup $BASE/ib.py
-}
-
 generate_libc() {
  clang2py -k cdefstum \
    $(dpkg -L libc6-dev | grep sys/mman.h) \
@@ -480,7 +465,6 @@ elif [ "$1" == "nvdrv" ]; then generate_nvdrv
 elif [ "$1" == "sqtt" ]; then generate_sqtt
 elif [ "$1" == "qcom" ]; then generate_qcom
 elif [ "$1" == "io_uring" ]; then generate_io_uring
-elif [ "$1" == "ib" ]; then generate_ib
 elif [ "$1" == "libc" ]; then generate_libc
 elif [ "$1" == "llvm" ]; then generate_llvm
 elif [ "$1" == "kgsl" ]; then generate_kgsl
@@ -19,9 +19,6 @@ if __name__ == "__main__":
  elif getenv("ASM") == -1:
    src = (pathlib.Path(__file__).parent / "amd_seb" / "kernel3_registers.cpp").read_text()
    prgfast = replace(prg, name="kernel3_registers", src=src, global_size=[N//128, N//128, 1], local_size=[256, 1, 1])
-  elif getenv("ASM") == -2:
-    src = (pathlib.Path(__file__).parent / "amd_seb" / "kernel4_gmem_df.cpp").read_text()
-    prgfast = replace(prg, name="kernel4_gmem_db", src=src, global_size=[N//128, N//128, 1], local_size=[256, 1, 1])
  else:
    src = (pathlib.Path(__file__).parent / "amd_seb" / "kernel5_lds_optim.cpp").read_text()
    prgfast = replace(prg, name="kernel5_lds_optim", src=src, global_size=[N//128, N//128, 1], local_size=[128, 1, 1])
@@ -10,8 +10,7 @@ __attribute__((device)) inline void __syncthreads() {
 }

 #define BLOCK_SIZE 256
-extern "C" __attribute__((global)) void __attribute__((amdgpu_flat_work_group_size(1, BLOCK_SIZE)))
-kernel3_registers(float *a, float *b, float *c)
+extern "C" __attribute__((global)) void kernel3_registers(float *a, float *b, float *c)
 {
  constexpr int N = 4096;
  constexpr float alpha = 1.0;
@@ -1,172 +0,0 @@
-typedef long unsigned int size_t;
-extern "C" __attribute__((device, const)) size_t __ockl_get_local_id(unsigned int);
-extern "C" __attribute__((device, const)) size_t __ockl_get_group_id(unsigned int);
-struct Dim3 { size_t x, y, z; };
-#define __shared__ __attribute__((shared, aligned(16)))
-__attribute__((device)) inline void __syncthreads() {
-  __builtin_amdgcn_fence(__ATOMIC_RELEASE, "workgroup");
-  __builtin_amdgcn_s_barrier();
-  __builtin_amdgcn_fence(__ATOMIC_ACQUIRE, "workgroup");
-}
-
-#define BLOCK_SIZE 256
-extern "C" __attribute__((global)) void __attribute__((amdgpu_flat_work_group_size(1, BLOCK_SIZE)))
-kernel4_gmem_db(float *a, float *b, float *c)
-{
-  constexpr int N = 4096;
-  constexpr float alpha = 1.0;
-  constexpr float beta = 0.0;
-
-  const Dim3 blockIdx{ __ockl_get_group_id(0), __ockl_get_group_id(1), __ockl_get_group_id(2) };
-  const Dim3 threadIdx{ __ockl_get_local_id(0), __ockl_get_local_id(1), __ockl_get_local_id(2) };
-
-  // Block Tile size
-  constexpr int BN = 128;
-  constexpr int BM = 128;
-  // Number of Row or column we read per batch
-  constexpr int BK = 8;
-
-  // Thread Tile size
-  constexpr int TN = 4;
-  constexpr int TM = 4;
-
-  constexpr int nbWaves = BLOCK_SIZE / 32;
-  // Wave Tile size
-  constexpr int WN = 64;
-  constexpr int WM = BN * BM / nbWaves / WN;
-
-  // Number of wave on X & Y axis in the Block tile
-  constexpr int nbWaveX = BN / WN;
-  constexpr int nbWaveY = BM / WM;
-
-  const int waveIndex = threadIdx.x / 32;
-  const int waveIdx = waveIndex % nbWaveX;
-  const int waveIdy = waveIndex / nbWaveX;
-  const int indexInWave = threadIdx.x % 32;
-
-  // A wave is a block of 8x4 of the output matrix
-  constexpr int nbThreadXPerWave = 8;
-  constexpr int nbThreadYPerWave = 4;
-
-  // Thread coordinates in Wave
-  const int idxInWave = indexInWave % nbThreadXPerWave;
-  const int idyInWave = indexInWave / nbThreadXPerWave;
-
-  constexpr int nbIterWaveN = WN / (nbThreadXPerWave * TN);
-  constexpr int nbIterWaveM = WM / (nbThreadYPerWave * TM);
-
-  // Wave Sub-tile size
-  constexpr int SUBWN = WN / nbIterWaveN;
-  constexpr int SUBWM = WM / nbIterWaveM;
-
-  // Thread mapping to read BKxBN block from A
-  int rAIdx = threadIdx.x % BK;
-  int rAIdy = threadIdx.x / BK;
-  // Thread mapping to read BNxBK block from B
-  int rBIdx = threadIdx.x % BN;
-  int rBIdy = threadIdx.x / BN;
-
-  constexpr int strideReadB = BLOCK_SIZE / BN;
-  constexpr int strideReadA = BLOCK_SIZE / BK;
-  constexpr int nbReadsB = BN * BK / BLOCK_SIZE;
-  constexpr int nbReadsA = BM * BK / BLOCK_SIZE;
-
-  float A_col[nbIterWaveM * TM];
-  float B_row[nbIterWaveN * TN];
-
-  __shared__ float As[BK][BM];
-  __shared__ float Bs[BK][BN];
-
-  float c_regs[TM * nbIterWaveM * TN * nbIterWaveN] = {0.0f};
-
-  for (int i = 0; i < nbReadsB; i++) {
-    int index_x = BN * blockIdx.x + rBIdx;
-    int index_y = rBIdy + i * strideReadB;
-    Bs[index_y % BK][index_x % BN] = b[N * index_y + index_x];
-  }
-
-  for (int i = 0; i < nbReadsA; i++) {
-    int index_x = rAIdx;
-    int index_y = BM * blockIdx.y + rAIdy + i * strideReadA;
-    As[(index_x % BK)][(index_y % BM)] = a[N * index_y + index_x];
-  }
-
-  __syncthreads();
-  // Iteration over BK blocks.
-  for (int kId = 0; kId < N; kId += BK) {
-    float regA[nbReadsA];
-    float regB[nbReadsB];
-    if (kId < N - BK) {
-      // We populate the Shared Memory with Ks row and columns
-      for (int i = 0; i < nbReadsB; i++) {
-        int index_x = BN * blockIdx.x + rBIdx;
-        int index_y = rBIdy + i * strideReadB + kId + BK;
-        regB[i] = b[N * index_y + index_x];
-      }
-
-      for (int i = 0; i < nbReadsA; i++) {
-        int index_x = rAIdx + kId + BK;
-        int index_y = BM * blockIdx.y + rAIdy + i * strideReadA;
-        regA[i] = a[N * index_y + index_x];
-      }
-    }
-
-    for (int k = 0; k < BK; k++) {
-      // we cache A & B for the entire Wave tile
-      for (int iterWave = 0; iterWave < nbIterWaveN; iterWave++) {
-        for (int i = 0; i < TN; i++) {
-          int index = waveIdx * WN + iterWave * SUBWN + TN * idxInWave + i;
-          B_row[iterWave * TN + i] = Bs[k][index];
-        }
-      }
-
-      for (int iterWave = 0; iterWave < nbIterWaveM; iterWave++) {
-        for (int i = 0; i < TM; i++) {
-          int index = waveIdy * WM + iterWave * SUBWM + TM * idyInWave + i;
-          A_col[iterWave * TM + i] = As[k][index];
-        }
-      }
-
-      // we accumulate to C_regs
-      for (int iterWaveM = 0; iterWaveM < nbIterWaveM; iterWaveM++) {
-        for (int iterWaveN = 0; iterWaveN < nbIterWaveN; iterWaveN++) {
-          for (int yt = 0; yt < TM; yt++) {
-            for (int xt = 0; xt < TN; xt++) {
-              const int x = iterWaveN * TN + xt;
-              const int y = iterWaveM * TM + yt;
-              c_regs[y * TN * nbIterWaveN + x] += A_col[y] * B_row[x];
-            }
-          }
-        }
-      }
-    }
-    __syncthreads();
-    if (kId < N - BK) {
-      for (int i = 0; i < nbReadsB; i++) {
-        int index_x = BN * blockIdx.x + rBIdx;
-        int index_y = rBIdy + i * strideReadB + kId + BK;
-        Bs[index_y % BK][index_x % BN] = regB[i]; // row
-      }
-
-      for (int i = 0; i < nbReadsA; i++) {
-        int index_x = rAIdx + kId + BK;
-        int index_y = BM * blockIdx.y + rAIdy + i * strideReadA;
-        As[(index_x % BK)][(index_y % BM)] = regA[i];
-      }
-      __syncthreads();
-    }
-  }
-
-  for (int iterWaveM = 0; iterWaveM < nbIterWaveM; iterWaveM++) {
-    for (int iterWaveN = 0; iterWaveN < nbIterWaveN; iterWaveN++) {
-      int xOut = blockIdx.x * BN + waveIdx * WN + iterWaveN * SUBWN + TN * idxInWave;
-      int yOut = blockIdx.y * BM + waveIdy * WM + iterWaveM * SUBWM + TM * idyInWave;
-      for (int yt = 0; yt < TM; yt++) {
-        for (int xt = 0; xt < TN; xt++) {
-          int indexC = N * (yOut + yt) + xOut + xt;
-          c[indexC] = beta * c[indexC] + alpha * c_regs[TN * nbIterWaveN * (iterWaveM * TM + yt) + (iterWaveN * TN + xt)];
-        }
-      }
-    }
-  }
-}
@@ -26,7 +26,7 @@ kernel5_lds_optim(float *a, float *b, float *c)
  // Number of Row or column we read per batch
  constexpr int BK = 8;

-  // Thread Tile size
+  // Thread Tile size . 4x4
  constexpr int TN = 4;
  constexpr int TM = 4;

@@ -1,125 +1,24 @@
 from tinygrad import Tensor, Device, Context, GlobalCounters, dtypes
-from tinygrad.uop.ops import UOp, Ops, KernelInfo, graph_rewrite, AxisType, PatternMatcher, UPat
+from tinygrad.uop.ops import UOp, Ops, KernelInfo
 from tinygrad.engine.realize import CompiledRunner, ExecItem, get_program
+from tinygrad.uop.ops import Ops, UOp
 from tinygrad.dtype import AddrSpace
-from tinygrad.schedule.kernelize import merge_views, view_left
-from tinygrad.helpers import getenv, colored, prod, unwrap
-from tinygrad.shape.shapetracker import ShapeTracker, View
-from tinygrad.shape.view import strides_for_shape
-from tinygrad.opt.kernel import axis_colors
-
-def to_colored(full_shape, axis_types): return '_'.join([colored(str(s), axis_colors[at]) for s,at in zip(full_shape, axis_types)])

 N = 4096
 run_count = 5

-BN = 128
-BM = 128
-BK = 8
+def hand_spec_kernel3():
+  BLOCK_SIZE = 256

-TN = 4
-TM = 4
+  BN = 128
+  BM = 128
+  BK = 8

-# NOTE: this is from testgrad
-# change reduceop axes and input ShapeTrackers, view gets replaced with a reshape.
-# src->r->view  -->   src->view->r
-def swizzle_reduceop(src:UOp, r:UOp, view:UOp):
-  if r.tag is not None: return None
-  # confirm the input is in order
-  # TODO: replace this with a UOp that allows for nothing else then remove this
-  permute = tuple(i for i in range(len(src.shape)) if i not in r.axis_arg)+r.axis_arg
-  assert permute == tuple(range(len(permute))), f"reduce axis must already be in order, {permute} isn't"
-
-  # append the reduce shape to each of the views
-  prshape = prod(rshape:=src.shape[-len(r.axis_arg):])
-  rstrides = strides_for_shape(rshape)
-  nv = [View.create(v.shape+rshape, tuple(x*prshape for x in v.strides)+rstrides, v.offset*prshape,
-                    v.mask+tuple((0,s) for s in rshape) if v.mask is not None else None) for v in unwrap(view.st).views]
-
-  # no reshape required with shrinking REDUCE_AXIS
-  return UOp(Ops.REDUCE_AXIS, r.dtype, (src.view(ShapeTracker(tuple(nv))),),
-             (r.arg[0], tuple(range(len(view.shape), len(view.shape) + len(r.axis_arg)))))
-
-pm = PatternMatcher([
-  (UPat(Ops.VIEW, src=(UPat(Ops.REDUCE_AXIS, src=(UPat.var("src"),), name="r"),), name="view"), swizzle_reduceop),
-])
-
-def top_spec_kernel3():
-  a = Tensor.empty(N,N)
-  b = Tensor.empty(N,N)
-  c = a@b
-  sink = c.schedule()[-1].ast
-  L = 16
-  sink = sink.reshape((N//L, L, N//L, L)) #.lift({0:UOp.range(dtypes.int, N//BM, 0), 2:UOp.range(dtypes.int, N//BN, 1)})
-  sink = graph_rewrite(sink, view_left+pm)
-  axis_types = (AxisType.GLOBAL, AxisType.LOCAL, AxisType.GLOBAL, AxisType.LOCAL, AxisType.REDUCE)
-  return sink.replace(arg=KernelInfo(name="top_"+to_colored(sink.full_shape, axis_types), axis_types=axis_types))
-
-def hl_spec_kernel3():
-  nbIterWaveM = 2
-  nbIterWaveN = 2
-
-  # define buffers
-  # TODO: remove these views once the defines have a shape
-  a = UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(N*N), arg=1).view(ShapeTracker.from_shape((N,N)))
-  b = UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(N*N), arg=2).view(ShapeTracker.from_shape((N,N))).permute((1,0))
-  c = UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(N*N), arg=0).view(ShapeTracker.from_shape((N,N)))
-  As = UOp(Ops.DEFINE_LOCAL, dtypes.float.ptr(BK*BM, AddrSpace.LOCAL), arg=0).view(ShapeTracker.from_shape((BK, BM))).permute((1,0))
-  Bs = UOp(Ops.DEFINE_LOCAL, dtypes.float.ptr(BK*BN, AddrSpace.LOCAL), arg=1).view(ShapeTracker.from_shape((BK, BN))).permute((1,0))
-  A_col = UOp(Ops.DEFINE_REG, dtypes.float.ptr(nbIterWaveM * TM, AddrSpace.REG), arg=0).view(ShapeTracker.from_shape((nbIterWaveM * TM,)))
-  B_row = UOp(Ops.DEFINE_REG, dtypes.float.ptr(nbIterWaveN * TN, AddrSpace.REG), arg=1).view(ShapeTracker.from_shape((nbIterWaveN * TN,)))
-
-  # shape buffers. TODO: permutes
-  full_shape = (N//BM, nbIterWaveM, BM//(nbIterWaveM * TM), TM, N//BN, nbIterWaveN, BN//(nbIterWaveN * TN), TN, N//BK, BK)
-  a = a.reshape((N//BM, nbIterWaveM, BM//(nbIterWaveM * TM), TM, 1, 1, 1, 1, N//BK, BK)).expand(full_shape)
-  b = b.reshape((1, 1, 1, 1, N//BN, nbIterWaveN, BN//(nbIterWaveN * TN), TN, N//BK, BK)).expand(full_shape)
-  c = c.reshape((N//BM, nbIterWaveM, BM//(nbIterWaveM * TM), TM, N//BN, nbIterWaveN, BN//(nbIterWaveN * TN), TN, 1, 1))
-  As = As.reshape((1, nbIterWaveM, BM//(nbIterWaveM * TM), TM, 1, 1, 1, 1, 1, BK)).expand(full_shape)
-  Bs = Bs.reshape((1, 1, 1, 1, 1, nbIterWaveN, BN//(nbIterWaveN * TN), TN, 1, BK)).expand(full_shape)
-  A_col = A_col.reshape((1, nbIterWaveM, 1, TM, 1, 1, 1, 1, 1, 1)).expand(full_shape)
-  B_row = B_row.reshape((1, 1, 1, 1, 1, nbIterWaveN, 1, TN, 1, 1)).expand(full_shape)
-
-  #                     U1   L2 L3 L4 L5   U6 U7      U9   L10 L11 L12 L13   U14 U15      U17  U18  U19
-  expanded_shape = (32, 2,   2, 2, 2, 2,   2, 2,  32, 2,   2,  2,  2,  2,    2,  2,  512, 2,   2,   2)
-  assert len(expanded_shape) == 20
-  permute_a = list(range(len(expanded_shape)))
-  permute_b = permute_a[:]
-
-  # this makes all the global loads match
-  # this can also be more simply done by rebinding the RANGEs
-  # but sadly, rebinding the RANGEs doesn't work to change the order of the local axes
-  permute_a[17:20] = [11,12,13]
-  permute_a[11:14] = [17,18,19]
-  permute_a[7], permute_a[10] = permute_a[10], permute_a[7]
-  permute_a[2:7] = [3,4,5,6,2]
-
-  permute_b[2:16] = [19,9,10,11,17,18,8,2,12,13,14,15,3,4]
-  permute_b[17:20] = [5,6,7]
-
-  a_permute   = a.reshape(expanded_shape).permute(tuple(permute_a)).reshape(full_shape)
-  As_permute = As.reshape(expanded_shape).permute(tuple(permute_a)).reshape(full_shape)
-
-  b_permute   = b.reshape(expanded_shape).permute(tuple(permute_b)).reshape(full_shape)
-  Bs_permute = Bs.reshape(expanded_shape).permute(tuple(permute_b)).reshape(full_shape)
-
-  #out = (a.load() * b.load()).r(Ops.ADD, (8, 9))
-  out = (As.load(As_permute.store(a_permute.load())) * Bs.load(Bs_permute.store(b_permute.load()))).r(Ops.ADD, (8, 9))
-  #out = (A_col.load(A_col.store(As.load(As.store(a.load())))) * B_row.load(B_row.store(Bs.load(Bs.store(b.load()))))).r(Ops.ADD, (8, 9))
-
-  axis_types = (
-    AxisType.GLOBAL, AxisType.UPCAST, AxisType.LOCAL, AxisType.UPCAST,
-    AxisType.GLOBAL, AxisType.UPCAST, AxisType.LOCAL, AxisType.UPCAST,
-    AxisType.REDUCE, AxisType.REDUCE)
-
-  sink = c.store(out).sink(arg=KernelInfo(name="tg_"+to_colored(full_shape, axis_types), axis_types=axis_types))
-  sink = graph_rewrite(sink, merge_views)
-  return sink
-
-def hand_spec_kernel3(kernel4=getenv("K4", 0), kernel5=getenv("K5", 0)):
-  BLOCK_SIZE = 128 if kernel5 else 256
+  TN = 4
+  TM = 4

  nbWaves = BLOCK_SIZE // 32
-  WN = 128 if kernel5 else 64
+  WN = 64
  WM = BN * BM // nbWaves // WN

  nbWaveX = BN // WN
@@ -158,163 +57,75 @@ def hand_spec_kernel3(kernel4=getenv("K4", 0), kernel5=getenv("K5", 0)):
  blockIdx_x = UOp(Ops.SPECIAL, dtypes.int, arg=("gidx0", N//BN))
  blockIdx_y = UOp(Ops.SPECIAL, dtypes.int, arg=("gidx1", N//BM))

-  a = UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(N*N), arg=1)
-  b = UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(N*N), arg=2)
-  c = UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(N*N), arg=0)
+  a = UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(N*N), arg=0)
+  b = UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(N*N), arg=1)
+  c = UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(N*N), arg=2)

-  A_col = UOp(Ops.DEFINE_REG, dtypes.float.ptr(nbIterWaveM * TM, AddrSpace.REG), arg=0)
-  B_row = UOp(Ops.DEFINE_REG, dtypes.float.ptr(nbIterWaveN * TN, AddrSpace.REG), arg=1)
+  junk = UOp.const(dtypes.float, 0)
+  A_col = UOp(Ops.DEFINE_REG, dtypes.float.ptr(nbIterWaveM * TM, AddrSpace.REG), src=(junk,), arg=0)
+  B_row = UOp(Ops.DEFINE_REG, dtypes.float.ptr(nbIterWaveN * TN, AddrSpace.REG), src=(junk,), arg=1)

-  BM_As_stride = (BM+4) if kernel5 else BM
-  As = UOp(Ops.DEFINE_LOCAL, dtypes.float.ptr(BK*BM_As_stride, AddrSpace.LOCAL), arg=0)
+  As = UOp(Ops.DEFINE_LOCAL, dtypes.float.ptr(BK*BM, AddrSpace.LOCAL), arg=0)
  Bs = UOp(Ops.DEFINE_LOCAL, dtypes.float.ptr(BK*BN, AddrSpace.LOCAL), arg=1)

-  c_regs = UOp(Ops.DEFINE_REG, dtypes.float.ptr(TM * nbIterWaveM * TN * nbIterWaveN), arg=2)
+  c_regs = UOp(Ops.DEFINE_REG, dtypes.float.ptr(TM * nbIterWaveM * TN * nbIterWaveN), src=(junk,), arg=2)

-  i = UOp.range(dtypes.int, c_regs.dtype.size, 16)
-  init_store = c_regs[i].store(UOp.const(dtypes.float, 0.0), i)
+  kId_range = UOp.range(dtypes.int, N//BK, 0)
+  kId = kId_range*BK

-  if kernel4:
-    regA = UOp(Ops.DEFINE_REG, dtypes.float.ptr(nbReadsA, AddrSpace.REG), arg=3)
-    regB = UOp(Ops.DEFINE_REG, dtypes.float.ptr(nbReadsB, AddrSpace.REG), arg=4)
+  # load from globals into locals
+  i = UOp.range(dtypes.int, nbReadsB, 1)
+  index_x = BN * blockIdx_x + rBIdx
+  index_y = rBIdy + i * strideReadB + kId
+  Bs_store = Bs[(index_y % BK) * BN + index_x % BN].store(b[N * index_y + index_x].load(), i)

-    # initial load from globals into locals (0)
-    kId = 0
+  i = UOp.range(dtypes.int, nbReadsA, 2)
+  index_x = rAIdx + kId
+  index_y = BM * blockIdx_y + rAIdy + i * strideReadA
+  As_store = As[(index_x % BK) * BM + index_y % BM].store(a[N * index_y + index_x].load(), i)

-    # load from globals into locals
-    i = UOp.range(dtypes.int, nbReadsB, 0)
-    index_x = BN * blockIdx_x + rBIdx
-    index_y = rBIdy + i * strideReadB + kId
-    Bs_store = Bs[(index_y % BK) * BN + index_x % BN].store(b[N * index_y + index_x].load(), i)
+  barrier = UOp(Ops.BARRIER, src=(As_store, Bs_store))

-    i = UOp.range(dtypes.int, nbReadsA, 1)
-    index_x = rAIdx + kId
-    index_y = BM * blockIdx_y + rAIdy + i * strideReadA
-    As_store = As[(index_x % BK) * BM_As_stride + index_y % BM].store(a[N * index_y + index_x].load(), i)
+  k = UOp.range(dtypes.int, BK, 3)

-    # iterate over the middle chunk
-    kId_range = UOp.range(dtypes.int, N//BK-1, 2)
-    kId = kId_range*BK
+  # load from locals into registers
+  iterWave = UOp.range(dtypes.int, nbIterWaveN, 4)
+  i = UOp.range(dtypes.int, TN, 5)
+  index = waveIdx * WN + iterWave * SUBWN + TN * idxInWave + i
+  B_row_store = B_row[iterWave*TN + i].store(Bs[k*BN + index].load(barrier), iterWave, i)

-    barrier = UOp.barrier(As_store, Bs_store)
+  iterWave = UOp.range(dtypes.int, nbIterWaveM, 6)
+  i = UOp.range(dtypes.int, TM, 7)
+  index = waveIdy * WM + iterWave * SUBWM + TM * idyInWave + i
+  A_col_store = A_col[iterWave*TM + i].store(As[k*BM + index].load(barrier), iterWave, i)

-    # load from globals into registers (next round)
-    i = UOp.range(dtypes.int, nbReadsB, 3)
-    index_x = BN * blockIdx_x + rBIdx
-    index_y = rBIdy + i * strideReadB + kId + BK
-    regB_store = regB[i].store(b[N * index_y + index_x].load(), i)
-
-    i = UOp.range(dtypes.int, nbReadsA, 4)
-    index_x = rAIdx + kId + BK
-    index_y = BM * blockIdx_y + rAIdy + i * strideReadA
-    regA_store = regA[i].store(a[N * index_y + index_x].load(), i)
-
-    def inner_loop(first_range, inp_dep=()):
-      # inner unroll
-      k = UOp.range(dtypes.int, BK, first_range+0)
-
-      # load from locals into registers
-      iterWave = UOp.range(dtypes.int, nbIterWaveN, first_range+1)
-      i = UOp.range(dtypes.int, TN, first_range+2)
-      index = waveIdx * WN + iterWave * SUBWN + TN * idxInWave + i
-      B_row_store = B_row[iterWave*TN + i].store(Bs[k*BN + index].load(*inp_dep), iterWave, i)
-
-      iterWave = UOp.range(dtypes.int, nbIterWaveM, first_range+3)
-      i = UOp.range(dtypes.int, TM, first_range+4)
-      index = waveIdy * WM + iterWave * SUBWM + TM * idyInWave + i
-      A_col_store = A_col[iterWave*TM + i].store(As[k*BM_As_stride + index].load(*inp_dep), iterWave, i)
-
-      # do the GEMM math
-      iterWaveM = UOp.range(dtypes.int, nbIterWaveM, first_range+5)
-      yt = UOp.range(dtypes.int, TM, first_range+6)
-      iterWaveN = UOp.range(dtypes.int, nbIterWaveN, first_range+7)
-      xt = UOp.range(dtypes.int, TN, first_range+8)
-      x = iterWaveN * TN + xt
-      y = iterWaveM * TM + yt
-      c_regs_idx = c_regs[y * TN * nbIterWaveN + x]
-      # sketchy, this should end the kId_range but it doesn't
-      sink = c_regs_idx.store(c_regs_idx.load(init_store) + A_col[y].load(A_col_store) * B_row[x].load(B_row_store),
-                              iterWaveM, iterWaveN, yt, xt, k)
-      return sink
-
-    # TODO: kId_range should endrange after a barrier
-    sink = inner_loop(5, (barrier, regB_store, regA_store)).barrier()
-
-    # load from registers into locals
-    i = UOp.range(dtypes.int, nbReadsB, 14)
-    index_x = BN * blockIdx_x + rBIdx
-    index_y = rBIdy + i * strideReadB + kId + BK
-    Bs_store = Bs[(index_y % BK) * BN + index_x % BN].store(regB[i].load(sink), i, kId_range)
-
-    i = UOp.range(dtypes.int, nbReadsA, 15)
-    index_x = rAIdx + kId + BK
-    index_y = BM * blockIdx_y + rAIdy + i * strideReadA
-    As_store = As[(index_x % BK) * BM_As_stride + index_y % BM].store(regA[i].load(sink), i, kId_range)
-
-    # final iteration without the copy
-    sink = inner_loop(16, (UOp.barrier(Bs_store, As_store),))
-  else:
-    kId_range = UOp.range(dtypes.int, N//BK, 0)
-    kId = kId_range*BK
-
-    # load from globals into locals
-    i = UOp.range(dtypes.int, nbReadsB, 1)
-    index_x = BN * blockIdx_x + rBIdx
-    index_y = rBIdy + i * strideReadB + kId
-    Bs_store = Bs[(index_y % BK) * BN + index_x % BN].store(b[N * index_y + index_x].load(), i)
-
-    i = UOp.range(dtypes.int, nbReadsA, 2)
-    index_x = rAIdx + kId
-    index_y = BM * blockIdx_y + rAIdy + i * strideReadA
-    As_store = As[(index_x % BK) * BM_As_stride + index_y % BM].store(a[N * index_y + index_x].load(), i)
-
-    barrier = UOp.barrier(As_store, Bs_store)
-
-    k = UOp.range(dtypes.int, BK, 3)
-
-    # load from locals into registers
-    iterWave = UOp.range(dtypes.int, nbIterWaveN, 4)
-    i = UOp.range(dtypes.int, TN, 5)
-    index = waveIdx * WN + iterWave * SUBWN + TN * idxInWave + i
-    B_row_store = B_row[iterWave*TN + i].store(Bs[k*BN + index].load(barrier), iterWave, i)
-
-    iterWave = UOp.range(dtypes.int, nbIterWaveM, 6)
-    i = UOp.range(dtypes.int, TM, 7)
-    index = waveIdy * WM + iterWave * SUBWM + TM * idyInWave + i
-    A_col_store = A_col[iterWave*TM + i].store(As[k*BM_As_stride + index].load(barrier), iterWave, i)
-
-    # do the GEMM math
-    iterWaveM = UOp.range(dtypes.int, nbIterWaveM, 8)
-    yt = UOp.range(dtypes.int, TM, 9)
-    iterWaveN = UOp.range(dtypes.int, nbIterWaveN, 10)
-    xt = UOp.range(dtypes.int, TN, 12)
-    x = iterWaveN * TN + xt
-    y = iterWaveM * TM + yt
-    c_regs_idx = c_regs[y * TN * nbIterWaveN + x]
-    sink = c_regs_idx.store(c_regs_idx.load(init_store) + A_col[y].load(A_col_store) * B_row[x].load(B_row_store),
-                            iterWaveM, iterWaveN, yt, xt, k, kId_range)
+  # do the GEMM math
+  iterWaveM = UOp.range(dtypes.int, nbIterWaveM, 8)
+  iterWaveN = UOp.range(dtypes.int, nbIterWaveN, 9)
+  yt = UOp.range(dtypes.int, TM, 10)
+  xt = UOp.range(dtypes.int, TN, 11)
+  x = iterWaveN * TN + xt
+  y = iterWaveM * TM + yt
+  c_regs_idx = c_regs[y * TN * nbIterWaveN + x]
+  sink = c_regs_idx.store(c_regs_idx.load() + A_col[y].load(A_col_store) * B_row[x].load(B_row_store),
+                          iterWaveM, iterWaveN, yt, xt, k, kId_range)

  # store c_regs into c
-  iterWaveM = UOp.range(dtypes.int, nbIterWaveM, 1000)
-  yt = UOp.range(dtypes.int, TM, 1001)
-  iterWaveN = UOp.range(dtypes.int, nbIterWaveN, 1002)
-  xt = UOp.range(dtypes.int, TN, 1003)
+  iterWaveM = UOp.range(dtypes.int, nbIterWaveM, 12)
+  iterWaveN = UOp.range(dtypes.int, nbIterWaveN, 13)
  xOut = blockIdx_x * BN + waveIdx * WN + iterWaveN * SUBWN + TN * idxInWave
  yOut = blockIdx_y * BM + waveIdy * WM + iterWaveM * SUBWM + TM * idyInWave
+  yt = UOp.range(dtypes.int, TM, 14)
+  xt = UOp.range(dtypes.int, TN, 15)
  indexC = N * (yOut + yt) + xOut + xt
-  sink = c[indexC].store(c_regs[TN * nbIterWaveN * (iterWaveM * TM + yt) + (iterWaveN * TN + xt)].load(sink),
-                         iterWaveM, iterWaveN, yt, xt)
+  sink = c[indexC].store(c_regs[TN * nbIterWaveN * (iterWaveM * TM + yt) + (iterWaveN * TN + xt)].load(sink), iterWaveM, iterWaveN, yt, xt)

  return sink.sink(arg=KernelInfo(name="tinygemm"))

 if __name__ == "__main__":
-  HL = getenv("HL")
-  if HL == 2: hprg = top_spec_kernel3()
-  elif HL == 1: hprg = hl_spec_kernel3()
-  else: hprg = hand_spec_kernel3()
+  hprg = hand_spec_kernel3()
  prg = get_program(hprg, Device.default.renderer)
  print(prg.src)
-  if getenv("SRC"): exit(0)
  hrunner = CompiledRunner(prg)

  a = Tensor.randn(N, N).realize()
@@ -326,8 +137,7 @@ if __name__ == "__main__":
    for _ in range(run_count): tc = (a@b).realize()

  GlobalCounters.reset()
-  buffers = [hc.uop.buffer, a.uop.buffer, b.uop.buffer]
-  ei = ExecItem(hrunner, buffers)
+  ei = ExecItem(hrunner, [a.uop.buffer, b.uop.buffer, hc.uop.buffer])
  with Context(DEBUG=2):
    for _ in range(run_count): ei.run(wait=True)
  err = (hc-tc).square().mean().item()
@@ -1,4 +1,4 @@
-# mypy: disable-error-code="misc, list-item, assignment, operator, index, arg-type"
+# mypy: disable-error-code="misc, list-item, assignment, attr-defined, operator, index, arg-type"
 from types import SimpleNamespace
 from typing import Any, Sequence, cast, Literal, Callable, get_args, NamedTuple
 import dataclasses, functools, io, math, types, warnings, pathlib, sys, enum
@@ -798,11 +798,12 @@ def get_onnx_ops() -> dict[str, types.FunctionType|dict[OpSetId, types.FunctionT

  def Gather(x:Tensor, indices:Tensor, axis:int=0):
    if indices.numel() < 9: # NOTE lessor kernels for smaller indices but kernel number increases depending on size of indices
-      ret_shape = x.shape[:axis] + indices.shape + x.shape[axis+1:]
+      x_sh = list(x.shape)
+      ret_shape = x_sh[:axis] + list(indices.shape) + x_sh[axis+1:]
      if indices.ndim > 1: indices = indices.flatten()
-      index_consts = [_cached_to_python_const(indices)] if indices.shape == () else _cached_to_python_const(indices)
-      index_consts = [x.shape[axis]+i if i<0 else i for i in index_consts]
-      args = [[(0,x) if j != axis else (i,i+1) for j, x in enumerate(x.shape)] for i in index_consts]
+      indices = [_cached_to_python_const(indices)] if indices.shape == () else _cached_to_python_const(indices)
+      indices = [x_sh[axis]+x if x<0 else x for x in indices]
+      args = [[(0,x) if j != axis else (i,i+1) for j, x in enumerate(x_sh)] for i in indices] # type: ignore
      return x.shrink(arg=tuple(args[0])).cat(*[x.shrink(arg=tuple(arg)) for arg in args[1:]], dim=axis).reshape(ret_shape)
    # NOTE faster gather, fixed number of kernels, but exceeds limited kernels for openpilot
    return x[tuple([slice(None) if i != axis else indices for i in range(x.ndim)])]
@@ -1,8 +1,7 @@
 import pathlib
 from tinygrad import Tensor, Device, Context
-from tinygrad.helpers import getenv

 if __name__ == "__main__":
  with Context(DEBUG=2):
-    disk_llama = Tensor(pathlib.Path(getenv("TESTFILE", "/raid/weights/LLaMA-3/8B/consolidated.00.pth")))
+    disk_llama = Tensor(pathlib.Path("/raid/weights/LLaMA-3/8B/consolidated.00.pth"))
    device_llama = disk_llama.to(Device.DEFAULT).realize()
@@ -1,9 +1,10 @@
-import unittest, numpy as np
-from tinygrad import Tensor, Device, TinyJit
+import unittest
+from tinygrad import Tensor
+from tinygrad import Device
 from tinygrad.helpers import Timing, CI, OSX
 import multiprocessing.shared_memory as shared_memory

-N = 256 if CI else 4096
+N = 4096
 class TestCopySpeed(unittest.TestCase):
  @classmethod
  def setUpClass(cls): Device[Device.DEFAULT].synchronize()
@@ -48,32 +49,6 @@ class TestCopySpeed(unittest.TestCase):
      with Timing("sync:  ", on_exit=lambda ns: f" @ {t.nbytes()/ns:.2f} GB/s"):
        t.to('CPU').realize()

-  def testCopyDefaulttoCPUJit(self):
-    if Device.DEFAULT == "CPU": return unittest.skip("CPU to CPU copy is a no-op")
-
-    @TinyJit
-    def _do_copy(t): return t.to('CPU').realize()
-
-    t = Tensor.randn(N, N, 4).contiguous().realize()
-    for _ in range(5):
-      with Timing("sync:  ", on_exit=lambda ns: f" @ {t.nbytes()/ns:.2f} GB/s"):
-        x = _do_copy(t)
-        Device[Device.DEFAULT].synchronize()
-      np.testing.assert_equal(t.numpy(), x.numpy())
-
-  def testCopytoCPUtoDefaultJit(self):
-    if Device.DEFAULT == "CPU": return unittest.skip("CPU to CPU copy is a no-op")
-
-    @TinyJit
-    def _do_copy(x): return t.to(Device.DEFAULT).realize()
-
-    for _ in range(5):
-      t = Tensor.randn(N, N, 4, device="CPU").contiguous().realize()
-      with Timing("sync:  ", on_exit=lambda ns: f" @ {t.nbytes()/ns:.2f} GB/s"):
-        x = _do_copy(t)
-        Device[Device.DEFAULT].synchronize()
-      np.testing.assert_equal(t.numpy(), x.numpy())
-
  @unittest.skipIf(CI, "CI doesn't have 6 GPUs")
  @unittest.skipIf(Device.DEFAULT != "GPU", "only test this on GPU")
  def testCopyCPUto6GPUs(self):
@@ -1,32 +0,0 @@
-import unittest
-from tinygrad import dtypes, Device, Tensor, Context
-from tinygrad.dtype import AddrSpace
-from tinygrad.helpers import getenv
-from tinygrad.uop.ops import UOp, Ops, KernelInfo, AxisType
-from tinygrad.shape.shapetracker import ShapeTracker
-from tinygrad.engine.realize import get_program, ExecItem, CompiledRunner
-
-class TestDefineReg(unittest.TestCase):
-  def test_simple(self, at=AxisType.UPCAST):
-    N = 16
-    bout = UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(N*N), arg=0).view(ShapeTracker.from_shape((N,N)))
-    a = UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(N*N), arg=1).view(ShapeTracker.from_shape((N,N)))
-    a_col = UOp(Ops.DEFINE_REG, dtypes.float.ptr(N, AddrSpace.REG), arg=0).view(ShapeTracker.from_shape((N,N), (0,1)))
-
-    out = a_col.load(a_col.store(a.load()))
-    sink = bout.store(out).sink(arg=KernelInfo(name="regcopy", axis_types=(AxisType.LOOP, at)))
-    prg = get_program(sink, Device.default.renderer)
-
-    with Context(DEBUG=0):
-      a = Tensor.randn(N, N).realize()
-      b = Tensor.empty(N, N).realize()
-    hrunner = CompiledRunner(prg)
-    ExecItem(hrunner, [b.uop.buffer, a.uop.buffer]).run(wait=True)
-    with Context(DEBUG=0):
-      self.assertEqual((b-a).mean().item(), 0.0)
-
-  @unittest.skipIf(getenv("PTX"), "ptx needs regs to be unrolled")
-  def test_simple_loop(self): self.test_simple(AxisType.LOOP)
-
-if __name__ == '__main__':
-  unittest.main()
@@ -1,6 +1,6 @@
 import unittest, ctypes, struct, os, random, numpy as np
 from tinygrad import Device, Tensor, dtypes
-from tinygrad.helpers import getenv, CI, mv_address, DEBUG
+from tinygrad.helpers import getenv, CI, mv_address
 from tinygrad.device import Buffer, BufferSpec
 from tinygrad.runtime.support.hcq import HCQCompiled, HCQBuffer
 from tinygrad.runtime.autogen import libc
@@ -513,31 +513,6 @@ class TestHCQ(unittest.TestCase):

      assert buf2.as_buffer()[0] == i

-  def test_map_cpu_buffer_to_device(self):
-    if Device[Device.DEFAULT].hw_copy_queue_t is None: self.skipTest("skip device without copy queue")
-
-    sz = 0x2000
-    cpu_buffer = Buffer("CPU", sz, dtypes.uint8, options=BufferSpec(cpu_access=True)).ensure_allocated()
-    cpu_buffer._buf.cpu_view().view(fmt='B')[:] = bytes([x & 0xff for x in range(sz)])
-
-    for devid in range(6):
-      if DEBUG >= 2: print(f"Testing map to device {Device.DEFAULT}:{devid}")
-
-      try: d = Device[f"{Device.DEFAULT}:{devid}"]
-      except Exception: break
-
-      local_buf = Buffer(f"{Device.DEFAULT}:{devid}", sz, dtypes.uint8, options=BufferSpec(cpu_access=True)).ensure_allocated()
-
-      d.allocator.map(cpu_buffer._buf)
-
-      d.hw_copy_queue_t().wait(d.timeline_signal, d.timeline_value - 1) \
-                         .copy(local_buf._buf.va_addr, cpu_buffer._buf.va_addr, sz) \
-                         .signal(d.timeline_signal, d.timeline_value).submit(d)
-      d.timeline_signal.wait(d.timeline_value)
-      d.timeline_value += 1
-
-      np.testing.assert_equal(cpu_buffer.numpy(), local_buf.numpy(), "failed")
-
  @unittest.skipUnless(MOCKGPU, "Emulate this on MOCKGPU to check the path in CI")
  def test_on_device_hang(self):
    if not hasattr(self.d0, 'on_device_hang'): self.skipTest("device does not have on_device_hang")
@@ -114,6 +114,27 @@ class TestLinearizer(unittest.TestCase):
        if skip and i in skip: continue
        assert ranges[i-1] != u, f"multireduce nested the ranges! {ranges[i-1], {u}}"

+  @unittest.expectedFailure
+  def test_const_alu_indexing(self):
+    st = ShapeTracker.from_shape((4,)).to_uop()
+    load = UOp.load(UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(), arg=1, src=()), st, dtype=dtypes.float)
+    op = load+UOp.const(dtypes.float, 1.0)*UOp.const(dtypes.float, -1)
+    store = UOp.store(UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(), arg=0, src=()), st, op)
+    Tensor.manual_seed(0)
+    x = Tensor.randn(4,).realize()
+    helper_linearizer_ast(store.sink(), [x], wanna_output=[x.numpy()+1*-1], opts=[])
+
+  # shapeless CONST in AST is not supported
+  @unittest.expectedFailure
+  def test_const_alu_indexing_one_const_fine(self):
+    st = ShapeTracker.from_shape((4,)).to_uop()
+    load = UOp.load(UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(), arg=1, src=()), st, dtype=dtypes.float)
+    op = load+UOp.const(dtypes.float, 1.0)
+    store = UOp.store(UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(), arg=0, src=()), st, op)
+    Tensor.manual_seed(0)
+    x = Tensor.randn(4,).realize()
+    helper_linearizer_ast(store.sink(), [x], wanna_output=[x.numpy()+1], opts=[])
+
  @unittest.skipIf(CI and Device.DEFAULT in {"PTX", "AMD", "NV"}, "very slow")
  def test_indexing_multireduce(self):
    dataset = Tensor.rand(16384, 256).realize()
@@ -270,7 +291,7 @@ class TestLinearizer(unittest.TestCase):
    realized_ast = realized_ast.replace(arg=KernelInfo(opts_to_apply=tuple(opts_to_apply)))
    program = get_program(realized_ast, Device[Device.DEFAULT].renderer)

-    stores = [u for u in program.uops if u.op is Ops.STORE and u.src[0].dtype.addrspace != AddrSpace.REG]
+    stores = [u for u in program.uops if u.op is Ops.STORE and u.dtype.addrspace != AddrSpace.REG]

    # the first store is to lds and can be upcasted
    assert stores[0].src[1].dtype == dtypes.float.vec(4)
@@ -612,7 +633,6 @@ class TestLinearizer(unittest.TestCase):
    helper(Tensor.arange(255), max_ops=2)

  @unittest.skipUnless(Device[Device.DEFAULT].renderer.supports_float4, "test requires float4")
-  @unittest.skipIf(getenv("PTX"), "broken on ptx for some reason")
  def test_grouped_store_phis(self):
    """
    float4 acc0 = float4(0.0,0.0,0.0,0.0);
@@ -628,7 +648,7 @@ class TestLinearizer(unittest.TestCase):
    k = helper_linearizer_opt(out)[-1]
    uops = get_program(k.get_optimized_ast(), k.opts).uops
    # check that the float4 cast collapses
-    store_vals = [u.src[1] for u in uops if u.op is Ops.STORE and u.src[0].dtype.addrspace != AddrSpace.REG]
+    store_vals = [u.src[1] for u in uops if u.op is Ops.STORE and u.dtype.addrspace != AddrSpace.REG]
    for val in store_vals:
      assert val.dtype == dtypes.float.vec(4) # and val.op is not Ops.VECTORIZE

@@ -679,13 +699,12 @@ class TestLinearizer(unittest.TestCase):
  @unittest.skipUnless(Device[Device.DEFAULT].renderer.has_local, "test requires locals")
  @unittest.skipUnless(Device[Device.DEFAULT].renderer.has_shared, "test requires shared")
  @unittest.skipUnless(Device[Device.DEFAULT].renderer.supports_float4, "test requires float4")
-  @unittest.skipIf(getenv("PTX"), "broken on ptx for some reason")
  def test_grouped_store_local_only(self):
    x, y = Tensor.rand(1,128), Tensor.rand(128, 128)
    r = (x@y).relu()
    k = helper_linearizer_opt(r)[-1]
    uops = get_program(k.get_optimized_ast(), k.opts).uops
-    stores = [u for u in uops if u.op is Ops.STORE and u.src[0].dtype.addrspace != AddrSpace.REG]
+    stores = [u for u in uops if u.op is Ops.STORE and u.dtype.addrspace != AddrSpace.REG]

    # the float4 value stores directly in lds and we skip upcast
    self.assertEqual(stores[0].src[1].dtype, dtypes.float.vec(4))
@@ -82,7 +82,6 @@ class TestLinearizerDumb(unittest.TestCase):
    assert prg.uops is not None and not any(uop.op is Ops.MAX for uop in prg.uops), "leftover MAX"

  @unittest.skipUnless(Device[Device.DEFAULT].renderer.has_local, "need local")
-  @unittest.skip("not applicable")
  def test_expander_new_srcs(self):
    ast = UOp(Ops.SINK, dtypes.void, arg=None, src=(
      UOp(Ops.STORE, dtypes.void, arg=None, src=(
@@ -1,6 +1,7 @@
 # ruff: noqa: E501
 import unittest
-from tinygrad import dtypes
+from tinygrad import dtypes, Device
+from tinygrad.helpers import CI
 from tinygrad.opt.kernel import Kernel
 from tinygrad.opt.search import Opt, OptOps, bufs_from_lin
 from extra.optimization.helpers import time_linearizer
@@ -161,5 +162,33 @@ class TestLinearizerOverflow(unittest.TestCase):
    opts = [Opt(op=OptOps.UPCAST, axis=3, arg=4), Opt(op=OptOps.LOCAL, axis=3, arg=16), Opt(op=OptOps.UPCAST, axis=1, arg=4), Opt(op=OptOps.LOCAL, axis=2, arg=8), Opt(op=OptOps.UPCAST, axis=1, arg=2), Opt(op=OptOps.UPCAST, axis=2, arg=4)]
    _test_overflow(ast, opts)

+@unittest.skipIf(Device.DEFAULT not in {"GPU", "HSA", "CUDA", "METAL"}, "only backends with locals")
+@unittest.skipIf(CI, "slow")
+class TestLinearizerOverflowAlt(unittest.TestCase):
+  def test_overflow_1(self):
+    BS = 2
+    g0, g1, g2 = [UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(), arg=i) for i in range(3)]
+    in_st_1 = ShapeTracker(views=(View(shape=(1, BS, 1, 3, 8, 230, 8, 230), strides=(0, 150528, 0, 50176, 0, 224, 0, 1), offset=-675, mask=((0, 1), (0, BS), (0, 1), (0, 3), (0, 8), (3, 227), (0, 8), (3, 227)), contiguous=False),
+                                  View(shape=(BS, 1, 64, 112, 112, 3, 7, 7), strides=(10156800, 0, 0, 3680, 2, 3385600, 425040, 231), offset=0, mask=None, contiguous=False))).to_uop()
+    in_st_2 = ShapeTracker(views=(View(shape=(BS, 1, 64, 112, 112, 3, 7, 7), strides=(0, 0, 147, 0, 0, 49, 7, 1), offset=0, mask=None, contiguous=False),)).to_uop()
+    ot_st = ShapeTracker(views=(View(shape=(BS, 1, 64, 112, 112, 1, 1, 1), strides=(802816, 0, 12544, 112, 1, 0, 0, 0), offset=0, mask=None, contiguous=True),)).to_uop()
+    prod = UOp(Ops.LOAD, dtypes.float, (g1.view(in_st_1.arg),)) * UOp(Ops.LOAD, dtypes.float, (g2.view(in_st_2.arg),))
+    store = UOp(Ops.STORE, src=(g0.view(ot_st.arg), UOp(Ops.REDUCE_AXIS, dtypes.float, (prod,), (Ops.ADD, (7, 6, 5)))))
+    ast = UOp(Ops.SINK, src=(store,))
+    opts = [Opt(op=OptOps.LOCAL, axis=3, arg=16), Opt(op=OptOps.LOCAL, axis=2, arg=2), Opt(op=OptOps.UPCAST, axis=0, arg=2)]
+    _test_overflow(ast, opts)
+  def test_overflow_2(self):
+    BS = 2
+    g0, g1, g2 = [UOp(Ops.DEFINE_GLOBAL, dtypes.float.ptr(), arg=i) for i in range(3)]
+    in_st_1 = ShapeTracker(views=(View(shape=(1, BS, 1, 3, 8, 230, 8, 230), strides=(0, 150528, 0, 50176, 0, 224, 0, 1), offset=-675, mask=((0, 1), (0, BS), (0, 1), (0, 3), (0, 8), (3, 227), (0, 8), (3, 227)), contiguous=False),
+                                  View(shape=(BS, 1, 64, 112, 112, 3, 7, 7), strides=(10156800, 0, 0, 3680, 2, 3385600, 425040, 231), offset=0, mask=None, contiguous=False))).to_uop()
+    in_st_2 = ShapeTracker(views=(View(shape=(BS, 1, 64, 112, 112, 3, 7, 7), strides=(0, 0, 147, 0, 0, 49, 7, 1), offset=0, mask=None, contiguous=False),)).to_uop()
+    ot_st = ShapeTracker(views=(View(shape=(BS, 1, 64, 112, 112, 1, 1, 1), strides=(802816, 0, 12544, 112, 1, 0, 0, 0), offset=0, mask=None, contiguous=True),)).to_uop()
+    prod = UOp(Ops.LOAD, dtypes.float, (g1.view(in_st_1.arg),)) * UOp(Ops.LOAD, dtypes.float, (g2.view(in_st_2.arg),))
+    store = UOp(Ops.STORE, src=(g0.view(ot_st.arg), UOp(Ops.REDUCE_AXIS, dtypes.float, (prod,), (Ops.ADD, (7, 6, 5)))))
+    ast = UOp(Ops.SINK, src=(store,))
+    opts = [Opt(op=OptOps.LOCAL, axis=3, arg=16), Opt(op=OptOps.UPCAST, axis=1, arg=4), Opt(op=OptOps.LOCAL, axis=2, arg=16), Opt(op=OptOps.UPCAST, axis=4, arg=4), Opt(op=OptOps.UPCAST, axis=1, arg=2), Opt(op=OptOps.UPCAST, axis=5, arg=2)]
+    _test_overflow(ast, opts)
+
 if __name__ == '__main__':
  unittest.main()
@@ -1126,7 +1126,6 @@ class TestMultiRamUsage(unittest.TestCase):
    # NOTE: the first one on the DEFAULT device should be freed
    self.assertUsed(self.N*self.N*4*2)

-  @unittest.skip("flaky")
  def test_zeros_shard(self, devices=(d1, d2)):
    _ = Tensor.zeros(self.N, self.N).contiguous().shard(devices, axis=0).realize()
    self.assertUsed(self.N*self.N*4) # sharding should not increase total ram usage
@@ -86,6 +86,7 @@ class TestFuse(unittest.TestCase):
      return (arange == idx).mul(vals).sum(-2, dtype=vals.dtype)
    self._test_fuse(embedding, a, atol=1e-5)

+  @unittest.skip("still broken")
  def test_flash_attention(self):
    BS = 4
    HEADS = 2
@@ -97,7 +98,7 @@ class TestFuse(unittest.TestCase):
      v = Tensor.randn(BS, HEADS, MATDIM, EMB).realize()
    # TODO: OPT is breaking things. NOOPT isn't linearizing
    with Context(NOOPT=1):
-      self._test_fuse(Tensor.scaled_dot_product_attention, q, k, v, atol=1e-5)
+      self._test_fuse(Tensor.scaled_dot_product_attention, q, k, v)

 class TestSoftmaxFusion(unittest.TestCase):
  @classmethod
@@ -512,24 +512,6 @@ class TestTinygrad(unittest.TestCase):
    subprocess.run([f'NPY=1 {Device.DEFAULT}=1 python3 -c "from tinygrad import Device; assert Device.DEFAULT == \\"{Device.DEFAULT}\\""'],
                    shell=True, check=True)

-    if Device.DEFAULT != "CPU":
-      # setting multiple devices fail
-      with self.assertRaises(subprocess.CalledProcessError):
-        subprocess.run([f'{Device.DEFAULT}=1 CPU=1 python3 -c "from tinygrad import Device; assert Device.DEFAULT == \\"{Device.DEFAULT}\\""'],
-                        shell=True, check=True)
-
-      # setting device via DEV
-      subprocess.run([f'DEV={Device.DEFAULT.capitalize()} python3 -c "from tinygrad import Device; assert Device.DEFAULT == \\"{Device.DEFAULT}\\""'],
-                      shell=True, check=True)
-      subprocess.run([f'DEV={Device.DEFAULT.lower()} python3 -c "from tinygrad import Device; assert Device.DEFAULT == \\"{Device.DEFAULT}\\""'],
-                      shell=True, check=True)
-      subprocess.run([f'DEV={Device.DEFAULT.upper()} python3 -c "from tinygrad import Device; assert Device.DEFAULT == \\"{Device.DEFAULT}\\""'],
-                      shell=True, check=True)
-
-      with self.assertRaises(subprocess.CalledProcessError):
-        subprocess.run([f'DEV={Device.DEFAULT} CPU=1 python3 -c "from tinygrad import Device; assert Device.DEFAULT == \\"{Device.DEFAULT}\\""'],
-                        shell=True, check=True)
-
  def test_no_attributeerror_after_apply_uop_exception(self):
    try:
      Tensor.arange(4).reshape(3,2)
@@ -317,7 +317,6 @@ class TestUOpGraph(unittest.TestCase):
      for uop, const in zip(uops, consts):
        self.assertEqual(uop, const)

-  @unittest.skip("no longer testable standalone")
  def test_wmma_vectorize_fold(self):
    for i in [2, 4, 8]:
      vec = UOp(Ops.VECTORIZE, dtypes.half.vec(i), tuple(UOp.const(dtypes.half, 0.0) for _ in range(i)))
@@ -2,21 +2,6 @@ from typing_extensions import Callable
 import hashlib, random, unittest
 from tinygrad import Tensor, Device, getenv, dtypes
 from tinygrad.device import is_dtype_supported
-from tinygrad.helpers import CI
-
-@unittest.skipUnless(is_dtype_supported(dtypes.uint8) and is_dtype_supported(dtypes.uint64), "Device must support uint8 and uint64")
-@unittest.skipIf(getenv("MOCKGPU") and Device.DEFAULT == "NV", "crashes in NV CI")
-class TestHashing(unittest.TestCase):
-  def _python_hash_1mb(self, data:bytes):
-    chunks = [data[i:i+4096] for i in range(0, len(data), 4096)]
-    chunk_hashes = [hashlib.shake_128(chunk).digest(16) for chunk in chunks]
-    return hashlib.shake_128(b''.join(chunk_hashes)).digest(16)
-
-  @unittest.skipIf(CI, "very slow")
-  def test_abc(self):
-    expected = self._python_hash_1mb(b"abc" + b"\x00" * (2**20 - 3))
-    out = Tensor(b"abc").hash()
-    self.assertEqual(bytes(out.data()), expected)

@unittest.skipUnless(is_dtype_supported(dtypes.uint8) and is_dtype_supported(dtypes.uint64), "Device must support uint8 and uint64")
@unittest.skipIf(getenv("MOCKGPU") and Device.DEFAULT == "NV", "crashes in NV CI")
@@ -48,25 +33,19 @@ class TestKeccak(unittest.TestCase):
      self.assertEqual(ha_ref, Tensor(a).keccak(name).data())
      self.assertEqual(hb_ref, hb)

-  def test_referenced(self):
+  def test_abc(self):
    # https://www.di-mgt.com.au/sha_testvectors.html
-    self.assertEqual(bytes(Tensor(b"abc").keccak().tolist()),
-                     bytearray.fromhex("3a985da74fe225b2 045c172d6bd390bd 855f086e3e9d525b 46bfe24511431532"))
-    self.assertEqual(bytes(Tensor(b"").keccak().tolist()),
-                     bytearray.fromhex("a7ffc6f8bf1ed766 51c14756a061d662 f580ff4de43b49fa 82d80a4b80f8434a"))
-    t = Tensor(b"abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu").keccak()
-    self.assertEqual(bytes(t.tolist()),
-                     bytearray.fromhex("916f6061fe879741 ca6469b43971dfdb 28b1a32dc36cb325 4e812be27aad1d18"))
-    # TODO: this does not run or very slow
-    # self.assertEqual(bytes(Tensor(b"a" * 1000000).keccak().tolist()),
-    #                  bytearray.fromhex("5c8875ae474a3634 ba4fd55ec85bffd6 61f32aca75c6d699 d0cdcb6c115891c1"))
+    out = Tensor(b"abc").keccak()
+    self.assertEqual(bytes(out.tolist()), bytearray.fromhex("3a985da74fe225b2 045c172d6bd390bd 855f086e3e9d525b 46bfe24511431532"))

  def test_long(self):
    data = b"\x00" * 4
    self.assertEqual(bytes(Tensor(data).keccak("shake_128").tolist()), hashlib.shake_128(data).digest(16))

-    data = b"\x00" * (1000 if CI else 4096)
-    self.assertEqual(bytes(Tensor(data).keccak("shake_128").tolist()), hashlib.shake_128(data).digest(16))
+    data = b"\x00" * 4096
+    with self.assertRaises(RecursionError):
+      # TODO: fix
+      self.assertEqual(bytes(Tensor(data).keccak("shake_128").tolist()), hashlib.shake_128(data).digest(16))

 if __name__ == "__main__":
  unittest.main()
@@ -827,6 +827,39 @@ class TestShapeTrackerSize(unittest.TestCase):
    st = ShapeTracker.from_shape((10,10)).pad(((2,4), (3,1))).flip((True, True))
    self.assertEqual(st.real_size(), 100)

+class TestConsecutive(unittest.TestCase):
+  @classmethod
+  def setUpClass(self):
+    from tinygrad.tensor import Tensor  # easier test setup
+    self.t = Tensor([[1, 2, 3, 4], [5, 6, 7, 8]])
+    self.const = Tensor(2)
+    self.ones = Tensor.ones(2, 4)
+
+  def test_unmodified(self):
+    assert self.t.uop.st.consecutive
+    assert self.t.reshape(4, 2).uop.st.consecutive
+    assert self.t.reshape(1, 8).uop.st.consecutive
+
+  def test_sliced(self):
+    assert self.t[0].uop.st.consecutive
+    assert self.t[0, 1:2].uop.st.consecutive
+    assert self.t[1].uop.st.consecutive
+    assert not self.t[:, 0].uop.st.consecutive
+    assert not self.t[:, 1].uop.st.consecutive
+
+  def test_padded(self):
+    assert not self.t.pad(((1, 1), None)).uop.st.consecutive
+    assert not self.t.pad((None, (1, 1))).uop.st.consecutive
+
+  def test_const(self):
+    assert self.const.uop.st.consecutive
+
+  def test_ones(self):
+    assert not self.ones.uop.st.consecutive
+    assert not self.ones[0, :].uop.st.consecutive
+    # consecutive if sliced into size 1
+    assert self.ones[0, 0].uop.st.consecutive
+
 class TestRender(unittest.TestCase):
  def test_render(self):
    st = ShapeTracker.from_shape((2, 3))
@@ -5,7 +5,7 @@ from dataclasses import dataclass
 from tinygrad.dtype import dtypes, ImageDType, PtrDType, DType, AddrSpace
 from tinygrad.uop.ops import UOp, Ops, UPat, PatternMatcher, graph_rewrite, GroupOp, identity_element
 from tinygrad.uop.symbolic import split_uop, uop_given_valid, parse_valid, simplify_valid, sym, symbolic_flat
-from tinygrad.helpers import getenv, flatten, AMX, prod, partition
+from tinygrad.helpers import getenv, flatten, AMX, prod, partition, all_same
 from tinygrad.renderer import Renderer

 # ***** image load valid simplification *****
@@ -111,7 +111,11 @@ def cat_after_store(cat:UOp, data:UOp, sto:UOp):
  for s in cat.src:
    ret.append(s.store(data.gep(tuple(range(offset, offset+s.dtype.count))), *sto.src[2:]))
    offset += s.dtype.count
-  return UOp(Ops.NOOP, src=tuple(ret))
+  # dtype CAT
+  dtypes: list[PtrDType] = [x.dtype for x in ret if isinstance(x.dtype, PtrDType)]
+  assert len(dtypes) == len(ret) and all_same([(x.size, x.addrspace) for x in dtypes])
+  out_dtype = dtypes[0].base.scalar().vec(sum([x.count for x in dtypes])).ptr(dtypes[0].size, dtypes[0].addrspace)
+  return UOp(Ops.PTRCAT, dtype=out_dtype, src=tuple(ret))

 def gep_on_store(gep:UOp, st:UOp, sto:UOp):
  # NOTE: we need to invert the gep here, but it may be an expanding gep
@@ -122,8 +126,8 @@ def gep_on_store(gep:UOp, st:UOp, sto:UOp):
  return gep.src[0].store(st.gep(new_arg), *sto.src[2:])

 load_store_folding = PatternMatcher([
-  (UPat(Ops.INDEX, src=(UPat(Ops.VECTORIZE, src=UPat(GroupOp.Defines, name="buf")), UPat.var("vec"))), expand_index),
-  (UPat(Ops.INDEX, src=(UPat(Ops.VECTORIZE, src=UPat(GroupOp.Defines, name="buf")), UPat.var("vec"),
+  (UPat(Ops.INDEX, src=(UPat(Ops.VECTORIZE, src=UPat((Ops.DEFINE_GLOBAL, Ops.DEFINE_LOCAL), name="buf")), UPat.var("vec"))), expand_index),
+  (UPat(Ops.INDEX, src=(UPat(Ops.VECTORIZE, src=UPat((Ops.DEFINE_GLOBAL, Ops.DEFINE_LOCAL), name="buf")), UPat.var("vec"),
                        UPat.var("mask"))), expand_index),
  # GEP after LOAD
  (UPat(Ops.LOAD, src=(UPat(Ops.GEP, name="gep"),), name="ld", allow_any_len=True),
@@ -154,8 +158,6 @@ def split_load_store(ctx:Renderer|None, ls:UOp, idx:UOp):
    must_divide = False
  elif buf.dtype.base != dtypes.float and buf.dtype.base != dtypes.half and not isinstance(buf.dtype, ImageDType):
    pass
-  elif cast(PtrDType, buf.dtype).addrspace == AddrSpace.REG:
-    pass
  elif isinstance(buf.dtype, ImageDType):
    lengths = [4]
  elif ctx is not None and ctx.supports_float4:
@@ -182,8 +184,7 @@ def split_load_store(ctx:Renderer|None, ls:UOp, idx:UOp):
      break

  # if it wasn't split, we return None. otherwise we CAT them
-  if len(ret) <= 1: return None
-  return UOp(Ops.CAT, ls.dtype, tuple(ret)) if ls.op is Ops.LOAD else UOp(Ops.NOOP, src=tuple(ret))
+  return UOp(Ops.CAT, ls.dtype, tuple(ret)) if len(ret) > 1 else None

 def image_fixup(ls:UOp):
  # normal image load or store, with the CAST from expand_index
@@ -235,8 +236,9 @@ def no_vectorized_alu(alu:UOp):
 def no_vectorized_acc(acc:UOp, c:UOp):
  if acc.dtype.count == 1: return None
  assert c.arg == 0, "this only supports index 0"
-  new_acc = acc.replace(dtype=acc.dtype.base.scalar().ptr(acc.dtype.count, cast(PtrDType, acc.dtype).addrspace))
-  return UOp(Ops.PTRCAT, acc.dtype, tuple([new_acc.index(UOp.const(dtypes.int, i)) for i in range(acc.dtype.count)]))
+  alus = tuple(UOp(acc.op, acc.dtype.base.scalar().ptr(1, cast(PtrDType, acc.dtype).addrspace),
+    tuple(s.gep(i) if j == 0 else s for j,s in enumerate(acc.src)), acc.arg+(i,)).index(UOp.const(dtypes.int, 0)) for i in range(acc.dtype.count))
+  return UOp(Ops.PTRCAT, acc.dtype, alus)

 devectorize = PatternMatcher([
  # no ALU on vectorized dtypes
@@ -282,16 +284,12 @@ def reduce_to_acc(ctx:ReduceContext, red:UOp):
  assert all(x.dtype == red.dtype for x in lst), f"horizontal reduction mismatch {lst[0].dtype} != {red.dtype}"
  # if we have a range
  if len(reduce_range) != 0:
-    topo = inp.toposort()
-    stored_ranges = flatten([x.src[2:] for x in topo if x.op is Ops.STORE])
-    input_ranges = tuple([x for x in topo if x.op is Ops.RANGE and x not in reduce_range and x not in stored_ranges])
-    identity = red.const_like(identity_element(red.arg, red.dtype.scalar()))
-    acc = UOp(Ops.DEFINE_REG, red.dtype.ptr(size=1, addrspace=AddrSpace.REG), arg=(ctx.acc_num,)).index(UOp.const(dtypes.int, 0))
-    do_store = acc.store(identity, UOp(Ops.NOOP, src=input_ranges)) if len(input_ranges) else acc.store(identity)
-    lst = [acc.load(do_store, *reduce_range)] + lst  # put acc as the first element
+    acc = UOp(Ops.DEFINE_REG, red.dtype.ptr(size=1, addrspace=AddrSpace.REG),
+              (red.const_like(identity_element(red.arg, red.dtype.scalar())),) + tuple(reduce_range), (ctx.acc_num,)).index(UOp.const(dtypes.int, 0))
+    lst = [acc.load()] + lst  # put acc as the first element
    ctx.acc_num += 1
  ret = functools.reduce(lambda x,y: x.alu(red.arg, y), lst)
-  return acc.load(acc.store(ret, *reduce_range)) if len(reduce_range) != 0 else ret
+  return acc.store(ret, *reduce_range).load() if len(reduce_range) != 0 else ret

 def no_vectorized_reduce(inp:UOp, red:UOp):
  if inp.dtype != red.dtype:
@@ -86,6 +86,9 @@ expander = PatternMatcher([
  (UPat((*GroupOp.ALU, Ops.CAST, Ops.BITCAST, Ops.GEP, Ops.WMMA, Ops.LOAD, Ops.STORE, Ops.INDEX,
         Ops.VECTORIZE, Ops.IF, Ops.REDUCE), name="root", custom_early_reject=set([Ops.UNROLL])), do_expand),
  (UPat(Ops.CONTRACT, name="con"), do_contract),
+  # vectorize DEFINE_ACC
+  (UPat(Ops.VECTORIZE, src=UPat(Ops.DEFINE_REG, name="acc"), name="v"),
+    lambda acc,v: acc.replace(dtype=v.dtype, src=(acc.src[0].broadcast(v.dtype.count),)+acc.src[1:])),
  # BARRIERs aren't actually expanded
  (UPat(Ops.BARRIER, src=(UPat(Ops.UNROLL, name="ex"),)),
   lambda ex: UOp(Ops.UNROLL, src=(UOp(Ops.BARRIER, src=ex.src),)*len(ex.src), arg=ex.arg)),
@@ -1,5 +1,5 @@
 import math
-from tinygrad.uop.ops import UOp, Ops, sint, PatternMatcher, UPat, KernelInfo, ssimplify, AxisType
+from tinygrad.uop.ops import UOp, Ops, sint, PatternMatcher, UPat, KernelInfo, ssimplify
 from tinygrad.helpers import all_int
 from tinygrad.dtype import dtypes
 from tinygrad.shape.view import get_contraction
@@ -53,36 +53,20 @@ def get_grouped_dims(prefix, dims:tuple[sint, ...], max_sizes:tuple[int, ...]|No
 def add_gpudims(ctx:Renderer, s:UOp):
  if s.arg is None: return None
  ki: KernelInfo = s.arg
-  global_dims = [i for i,x in enumerate(ki.axis_types) if x is AxisType.GLOBAL]
-  local_dims = [i for i,x in enumerate(ki.axis_types) if x in (AxisType.LOCAL, AxisType.GROUP_REDUCE)]
-  if not global_dims and not local_dims: return None
+  if not ki.global_dims and not ki.local_dims: return None
  s_topo = list(s.toposort())
  if any(x.op is Ops.SPECIAL for x in s_topo): return None
-
-  # get global and local shape
-  all_ranges = {x.arg%1000:x for x in s_topo if x.op is Ops.RANGE}
-  ranges = [all_ranges[r] for r in global_dims+local_dims if r in all_ranges]
-  global_shape = tuple([ssimplify(r.src[0]) for r in ranges if r.arg%1000 in global_dims])
-  local_shape = tuple([ssimplify(r.src[0]) for r in ranges if r.arg%1000 in local_dims])
-
-  # get the idxs
+  ranges = sorted([x for x in s_topo if x.op is Ops.RANGE and x.arg in (ki.global_dims+ki.local_dims)], key=lambda x: x.arg)
+  if not len(ranges): return None
+  global_shape = tuple([ssimplify(r.src[0]) for r in ranges if r.arg in ki.global_dims])
+  local_shape = tuple([ssimplify(r.src[0]) for r in ranges if r.arg in ki.local_dims])
  if ki.dont_use_locals:
-    assert not local_dims, "can't use locals if there's no local dims"
+    assert not ki.local_dims, "can't use locals if there's no local dims"
    idxs = get_grouped_dims("idx", global_shape, ctx.global_max, reverse=True)
  else:
    # define indexes for GPU-like execution
    idxs = get_grouped_dims("gidx", global_shape, ctx.global_max, reverse=True) + get_grouped_dims("lidx", local_shape, ctx.local_max)
-
-  # apply to multiple ranges
-  subs = {}
-  for r in s_topo:
-    if r.op is not Ops.RANGE: continue
-    try:
-      ii = (global_dims+local_dims).index(r.arg%1000)
-      if r.arg < 2000 and ki.axis_types[r.arg%1000] == AxisType.GROUP_REDUCE: continue
-      subs[r] = idxs[ii]
-    except ValueError: continue
-  return s.substitute(subs)
+  return s.substitute(dict(zip(ranges, idxs)))

 pm_add_gpudims = PatternMatcher([
  (UPat(Ops.SINK, name="s"), add_gpudims),
@@ -3,7 +3,7 @@ import heapq
 from collections import defaultdict
 from dataclasses import dataclass, replace
 from tinygrad.uop.ops import UOp, Ops, PatternMatcher, UPat, GroupOp
-from tinygrad.helpers import dedup, all_same, flatten, getenv
+from tinygrad.helpers import dedup, partition, all_same, flatten, getenv

 # NOTE: any toposort should be valid here, unlike last time this isn't required, it's just for speed
 def block_reorder(lst:list[UOp]) -> list[UOp]:
@@ -97,7 +97,7 @@ class BlockContext:

 # ***** make blocks *****

-DONT_PLACE_IN_BLOCK = {Ops.DEFINE_GLOBAL, Ops.DEFINE_LOCAL, Ops.DEFINE_REG, Ops.DEFINE_VAR, Ops.SPECIAL, Ops.CONST}
+DONT_PLACE_IN_BLOCK = {Ops.DEFINE_GLOBAL, Ops.DEFINE_LOCAL, Ops.DEFINE_VAR, Ops.SPECIAL, Ops.CONST}

 def add_blockends(base_block:UOp, new_ctx:tuple[UOp, ...], current_ctx:tuple[UOp, ...], cnt:int=1) -> UOp:
  ends_to_add = [z for z in new_ctx if z not in current_ctx]
@@ -207,15 +207,12 @@ def remove_blockend(x:UOp):
    assert all_same(parent_blocks), f"should never have two parent blocks (has {len(parent_blocks)})"
    parent_block = parent_blocks[0]
    assert len(parent_blocks) == parent_block.arg.cnt
-    # NOTE: DEFINE_ACC doesn't have to be handled in any special way
-    late_ops = list(x.arg.lst)
+    # range needs DEFINE_ACC to be before the range (never in DEFINE_ACC for if)
+    early_ops, late_ops = partition(x.arg.lst, lambda y: y.op is Ops.DEFINE_REG and x.arg.end in y.src)
    # NOTE: we have to add a barrier at the start if barrier is used in the range
    if x.op is Ops.BLOCKEND and any(y.op is Ops.BARRIER for y in late_ops) and late_ops[-1].op is Ops.ENDRANGE:
      late_ops = [UOp(Ops.BARRIER)] + late_ops
-    # peephole opt, remove any BARRIERs next to each other
-    for i in range(len(late_ops)-1):
-      if late_ops[i].op is Ops.BARRIER and late_ops[i+1].op is Ops.BARRIER: late_ops[i+1] = UOp(Ops.NOOP)
-    arg = BasicBlock(parent_block.arg.lst+tuple(late_ops), tuple([y for y in x.arg.ctx if y is not x.arg.end]), cnt=x.arg.cnt)
+    arg = BasicBlock(tuple(early_ops)+parent_block.arg.lst+tuple(late_ops), tuple([y for y in x.arg.ctx if y is not x.arg.end]), cnt=x.arg.cnt)
    return UOp(Ops.BLOCK, src=tuple(y for y in x.src if y is not parent_block)+parent_block.src, arg=arg)

 block_merge = PatternMatcher([
@@ -1,94 +1,68 @@
 # the job of the lowerer is to do indexing
-import functools, operator
-from typing import cast
 from dataclasses import dataclass
-from tinygrad.dtype import dtypes, AddrSpace, PtrDType
-from tinygrad.uop.ops import KernelInfo, UOp, Ops, PatternMatcher, UPat, sint_to_uop, AxisType, graph_rewrite
+from typing import cast
+from tinygrad.dtype import dtypes, PtrDType, AddrSpace
+from tinygrad.uop.ops import KernelInfo, UOp, Ops, PatternMatcher, UPat, sint_to_uop, AxisType
 from tinygrad.helpers import prod, partition, flatten

 # ***** indexing *****

@dataclass
 class IndexContext:
-  axis_types: tuple[AxisType, ...]
  idxs: list[UOp]
-  start: int = 0
-
-def shape_to_idx(s, axis_types, start=0):
-  # indexes
-  idxs = []
-  for i, (s, at) in enumerate(zip(s, axis_types)):
-    if at in (AxisType.UPCAST, AxisType.UNROLL):
-      assert isinstance(s, int), "needs to be int to upcast/unroll"
-      idxs.append(UOp(Ops.UNROLL, dtypes.int, (UOp.const(dtypes.int.vec(s), tuple(range(s))),), ((i,s),), tag=1))
-    else:
-      # all others are RANGES
-      idxs.append(UOp(Ops.RANGE, dtypes.int, (sint_to_uop(s),), start+i))
-  return idxs
+  ridxs: list[UOp]

 def get_index(ast:UOp) -> IndexContext:
  axis_types = ast.arg.axis_types if isinstance(ast.arg, KernelInfo) else ()
  if len(ast.full_shape) != len(axis_types): axis_types = (AxisType.LOOP,)*len(ast.full_shape)
-  return IndexContext(axis_types, [], 0)
+
+  # indexes
+  idxs = []
+  for i, (s, at) in enumerate(zip(ast.full_shape, axis_types)):
+    if at in (AxisType.UPCAST, AxisType.UNROLL):
+      assert isinstance(s, int), "needs to be int to upcast/unroll"
+      idxs.append(UOp(Ops.UNROLL, dtypes.int, (UOp.const(dtypes.int.vec(s), tuple(range(s))),), ((i,s),)))
+    else:
+      # all others are RANGES
+      idxs.append(UOp(Ops.RANGE, dtypes.int, (sint_to_uop(s),), i))
+
+  # late indexes (group for reduce)
+  ridxs = idxs[:]
+  for i, (s, at) in enumerate(zip(ast.full_shape, axis_types)):
+    if at == AxisType.GROUP_REDUCE:
+      ridxs[i] = UOp(Ops.RANGE, dtypes.int, (sint_to_uop(s),), 1000+i)
+
+  return IndexContext(idxs, ridxs)

 # ***** lowering (given index) *****

-def subblock(ctx: IndexContext, full_new_idx: list[UOp], src: UOp):
-  lc = IndexContext(ctx.axis_types, full_new_idx, ctx.start+1000)
-  ctx.start = lc.start
-  return graph_rewrite(src, pm_lowerer, lc, name="subblock", bottom_up=True)
-
 def lower_reduce_axis(ctx: IndexContext, x: UOp):
-  new_idxs = shape_to_idx(x.src[0].shape, ctx.axis_types, ctx.start)
-  full_new_idx = list(ctx.idxs)
-  for a in x.axis_arg: full_new_idx[a] = new_idxs[a]
-
-  ret = subblock(ctx, full_new_idx, x.src[0])
-
  # NOTE: always using ridxs is fine here
-  reduce_range, reduce_expand = partition([full_new_idx[i] for i in x.axis_arg], lambda y: y.op is Ops.RANGE)
+  reduce_range, reduce_expand = partition([ctx.ridxs[i] for i in x.axis_arg], lambda y: y.op is Ops.RANGE)
  assert all(x.op is Ops.UNROLL for x in reduce_expand), f"not all UNROLLS in {reduce_expand} for {x.axis_arg}"
+  ret = x.src[0]
  if len(contract_axis:=flatten(x.arg for x in reduce_expand)):
-    ret = UOp(Ops.CONTRACT, x.dtype.vec(prod(x[1] for x in contract_axis)), (ret,), tuple(contract_axis), tag=1)
+    ret = UOp(Ops.CONTRACT, x.dtype.vec(prod(x[1] for x in contract_axis)), (ret,), tuple(contract_axis))
  # REDUCE supports both "horizontal" reduction and range reduction. the horizontal elements are taken in the nearest group
  return UOp(Ops.REDUCE, x.dtype, (ret,)+tuple(reduce_range), x.arg[0])

+def lower_load(ctx: IndexContext, x: UOp, buf: UOp):
+  idx, valid = x.st_arg.to_indexed_uops(ctx.ridxs if buf.op is Ops.DEFINE_LOCAL else ctx.idxs)
+  barrier = (UOp(Ops.BARRIER, dtypes.void, (x.src[1],)),) if buf.op is Ops.DEFINE_LOCAL else ()
+  return UOp(Ops.LOAD, x.dtype, (buf.index(idx, valid),) + barrier)
+
 def lower_store(ctx: IndexContext, x: UOp, buf: UOp):
-  # TODO: reenable after REDUCE_AXIS is fixed
-  #assert x.src[1].shape == x.src[0].shape, f"shape mismatch on store {x.src[1].shape} != {x.src[0].shape}"
+  idx, valid = x.st_arg.to_indexed_uops(ctx.idxs)
+  if cast(PtrDType, buf.dtype).addrspace == AddrSpace.GLOBAL:
+    # NOTE: only store the local reduceop in the threads that are actually doing the reduce
+    for oidx, ridx in zip(ctx.idxs, ctx.ridxs):
+      if oidx is not ridx: valid = valid * oidx.eq(0)
+  return buf.index(idx, valid).store(x.src[1], *[x for x in UOp.sink(idx, valid).toposort() if x.op is Ops.RANGE])

-  new_idxs = shape_to_idx(x.src[0].shape, ctx.axis_types, ctx.start)
-  idx, valid = x.st_arg.to_indexed_uops(new_idxs)
-  used_idxs = [x for x in UOp.sink(idx, valid).toposort() if x in new_idxs]
-  real_new_idxs = []
-  for i in range(len(x.src[0].shape)):
-    if new_idxs[i] in used_idxs or len(ctx.idxs) <= i: real_new_idxs.append(new_idxs[i])
-    else: real_new_idxs.append(ctx.idxs[i])
-
-  stored = subblock(ctx, real_new_idxs, x.src[1])
-  used_ranges = [x for x in used_idxs if x.op is Ops.RANGE]
-  ret = buf.index(idx, valid).store(stored, *used_ranges)
-
-  # insert BARRIER if we are ending a LOCAL, IF if we are ending a GROUP_REDUCE
-  if cast(PtrDType, buf.dtype).addrspace == AddrSpace.LOCAL and \
-      any(ctx.axis_types[x.arg%1000] in {AxisType.GROUP_REDUCE, AxisType.LOCAL} for x in used_ranges):
-    ret = ret.barrier()
-    range_gates = [x.eq(0) for x in used_ranges if ctx.axis_types[x.arg%1000] == AxisType.GROUP_REDUCE]
-    if len(range_gates): ret = UOp(Ops.IF, src=(functools.reduce(operator.and_, range_gates), ret))
-  return ret
-
-def fixup_wmma(ctx:IndexContext, x:UOp):
-  if x.tag is not None: return None
-  new_idxs = shape_to_idx(x.src[0].shape, ctx.axis_types, ctx.start)
-  full_new_idx = list(ctx.idxs)
-  for a in x.arg[-1]: full_new_idx[a] = new_idxs[a]
-
-  srcs = subblock(ctx, full_new_idx, UOp.sink(*x.src)).src
-
-  # NOTE: this assumes these are expanded. which now shouldn't change anything
-  new_x_arg_m2 = tuple([tuple([(full_new_idx[a].arg[0][0], sz) for a,sz in v]) for v in x.arg[-2]])
-  new_x_arg_m1 = tuple([full_new_idx[a].arg[0][0] for a in x.arg[-1]])
-  return x.replace(src=srcs, arg=x.arg[:-2]+(new_x_arg_m2, new_x_arg_m1), tag=1)
+def lower_const(ctx:IndexContext, view:UOp, c:UOp):
+  if all(x.mask is None for x in view.arg.views): return c
+  _, valid = view.arg.to_indexed_uops(ctx.idxs)
+  return valid.where(c, c.const_like(0))

 pm_lowerer = PatternMatcher([
  # TODO: remove these hacks
@@ -97,18 +71,10 @@ pm_lowerer = PatternMatcher([
  # hack for old style VALID (now it's just VIEW(CONST))
  (UPat(Ops.VALID, src=(UPat(Ops.VIEW, name="v"),)).where(UPat.cvar("c"), UPat(Ops.CONST, arg=0)), lambda c,v: c.replace(src=()).view(v.arg)),

-  # consts and loads
-  (UPat(Ops.VIEW, src=(UPat((Ops.CONST, Ops.DEFINE_VAR), name="c"),), name="view"),
-   lambda ctx,view,c: c if all(x.mask is None for x in view.arg.views) else view.arg.to_indexed_uops(ctx.idxs)[1].where(c, c.const_like(0))),
-  (UPat(Ops.LOAD, src=(UPat.var("buf").view(),), allow_any_len=True, name="x"),
-   lambda ctx,buf,x: UOp(Ops.LOAD, x.dtype, (buf.index(*x.st_arg.to_indexed_uops(ctx.idxs)),)+x.src[1:])),
-
  # reduce/view_const
  (UPat(Ops.REDUCE_AXIS, name="x"), lower_reduce_axis),
+  (UPat(Ops.VIEW, src=(UPat((Ops.CONST, Ops.DEFINE_VAR), name="c"),), name="view"), lower_const),
+  # rewrite LOAD/STORE VIEW to LOAD/STORE with indexed
+  (UPat(Ops.LOAD, src=(UPat.var("buf").view(),), allow_any_len=True, name="x"), lower_load),
  (UPat(Ops.STORE, src=(UPat.var("buf").view(),), allow_any_len=True, name="x"), lower_store),
-  (UPat(Ops.WMMA, name="x"), fixup_wmma),
-
-  # axis fixups for WMMA
-  (UPat((Ops.CONTRACT, Ops.UNROLL), name="x"),
-   lambda ctx,x: x.replace(tag=1, arg=tuple([(ctx.idxs[a].arg[0][0], sz) for a,sz in x.arg])) if x.tag is None else None),
 ])
@@ -4,7 +4,7 @@ from collections import defaultdict
 from typing import Any, Generic, TypeVar, Iterator
 import importlib, inspect, functools, pathlib, os, platform, contextlib, sys, re, atexit, pickle, decimal, time
 from tinygrad.helpers import CI, OSX, LRU, getenv, diskcache_get, diskcache_put, DEBUG, GlobalCounters, flat_mv, PROFILE, temp, \
-                             colored, Context, DISABLE_COMPILER_CACHE, ALLOW_DEVICE_USAGE, cpu_events, ProfileEvent, dedup
+                             colored, Context, DISABLE_COMPILER_CACHE, ALLOW_DEVICE_USAGE, cpu_events, ProfileEvent
 from tinygrad.dtype import DType, ImageDType, PtrDType, dtypes, _to_np_dtype
 from tinygrad.renderer import Renderer

@@ -37,8 +37,7 @@ class _Device:
      with contextlib.suppress(Exception): yield self[device].device
  @functools.cached_property
  def DEFAULT(self) -> str:
-    dev = [dev] if (dev:=getenv("DEV", "").upper()) else []
-    from_env = dedup(dev + [d for d in self._devices if d not in ["DISK", "NPY"] and getenv(d) == 1])
+    from_env = [d for d in self._devices if d not in ["DISK", "NPY"] and getenv(d) == 1]
    assert len(from_env) < 2, f"multiple devices set in env: {from_env}"
    if len(from_env) == 1: return from_env[0]
    try:
@@ -336,7 +335,7 @@ if PROFILE:

    if not getenv("SQTT", 0):
      from tinygrad.uop.ops import launch_viz
-      launch_viz(PROFILE, fn)
+      launch_viz("PROFILE", fn)

 if __name__ == "__main__":
  for device in ALL_DEVICES:
@@ -42,13 +42,17 @@ def apply_graph_to_jit(jit_cache: list[ExecItem], input_rawbuffers: list[Buffer]

  for ji in jit_cache:
    match ji.prg:
-      case CompiledRunner(): ji_graph_dev = ji.prg.dev
-      case BufferXfer(): ji_graph_dev = Device[unwrap(ji.bufs[0]).device]
-      case BufferCopy(): ji_graph_dev = next((Device[unwrap(b).device] for b in ji.bufs if unwrap(b).device not in {"CPU", "LLVM"}), None)
+      case CompiledRunner():
+        ji_graph_dev = ji.prg.dev
+        # All GraphRunners can graph CompiledRunners
+        can_be_graphed = ji_graph_dev.graph is not None
+      case BufferXfer():
+        ji_graph_dev = Device[unwrap(ji.bufs[0]).device]
+        # All *Multi*GraphRunner support graphing BufferXfers
+        can_be_graphed = ji_graph_dev.graph is not None and issubclass(graph_class(ji_graph_dev), MultiGraphRunner)
      case ViewOp(): continue # ViewOps are just ignored
-      case _: ji_graph_dev = None # Everything else is not graphed and flushes existing graph if it's being constructed
+      case _: can_be_graphed = False # Everything else is not graphed and flushes existing graph if it's being constructed

-    can_be_graphed = ji_graph_dev is not None and ji_graph_dev.graph is not None and graph_class(ji_graph_dev).supports_exec_item(ji_graph_dev, ji)
    is_multigraph = can_be_graphed and issubclass(graph_class(ji_graph_dev), MultiGraphRunner)
    can_share_graph = can_be_graphed and (type(ji_graph_dev) is type(current_device) if is_multigraph else ji_graph_dev == current_device)
    can_extend_graph_batch = can_share_graph and (max_batch_size == 0 or len(current_batch) < max_batch_size)
@@ -126,13 +130,8 @@ class GraphRunner(Runner):

    return list({id(x):x for x in wait_nodes}.values())

-  @staticmethod
-  def supports_exec_item(dev, ei:ExecItem) -> bool: return isinstance(ei.prg, CompiledRunner)
-
 # a marker for your graph supporting multiple devices of the same type
-class MultiGraphRunner(GraphRunner):
-  @staticmethod
-  def supports_exec_item(dev, ei:ExecItem) -> bool: return isinstance(ei.prg, (CompiledRunner, BufferXfer))
+class MultiGraphRunner(GraphRunner): pass

 def get_out_buffers_for_ei(ei:ExecItem) -> list[Buffer]:
  if isinstance(ei.prg, CompiledRunner): return [cast(Buffer, ei.bufs[out]) for out in ei.prg.p.outs if out not in ei.prg.p.ins]
@@ -13,7 +13,7 @@ from tinygrad.uop.spec import type_verify

 # **************** Program Creation ****************

-@track_rewrites(name=lambda _ast,_renderer,ret: TracingKey(ret.name, (ret.function_name, ret.ast), ret.src, ret=ret))
+@track_rewrites(name=lambda _ast,_renderer,ret: TracingKey(ret.name, (ret.function_name, ret.ast), ret.src))
 def get_program(ast:UOp, renderer:Renderer) -> ProgramSpec:
  """
  Transform an AST into a ProgramSpec. May trigger BEAM search.
@@ -191,7 +191,6 @@ class TracingKey:
  keys:tuple[str, ...]=()                # optional keys to search for related traces
  fmt:str|None=None                      # optional detailed formatting
  cat:str|None=None                      # optional category to color this by
-  ret:Any=None

 class ProfileEvent: pass

@@ -5,7 +5,7 @@ from collections import defaultdict
 from typing import cast, Final, Callable, Sequence
 from enum import Enum, auto

-from tinygrad.uop.ops import GroupOp, KernelInfo, UOp, Ops, can_pad, resolve, Variable, sint, graph_rewrite, AxisType
+from tinygrad.uop.ops import GroupOp, KernelInfo, UOp, Ops, can_pad, resolve, Variable, sint, graph_rewrite, smax, AxisType
 from tinygrad.uop.spec import type_verify, ast_spec
 from tinygrad.device import Device
 from tinygrad.opt.tc import TensorCore
@@ -73,8 +73,7 @@ class Kernel:
      self.sts.append(unwrap(x.src[0].st))

    # add a shapetracker to the end to track the full shape, with 0 strides so it can merge
-    full_shape = ast.full_shape
-    self.sts.append(ShapeTracker.from_shape(full_shape, (0,)*len(full_shape)))
+    self.sts.append(ShapeTracker.from_shape(tuple([smax(*s) for s in zip(*[x.shape for x in self.sts])]), (0,)*len(self.sts[0].shape)))

    # parameters for optimization
    self.tensor_core: TensorCore|None = None
@@ -448,23 +447,10 @@ class Kernel:
      ret = op.replace(src=tuple(fixup_ast(x) for x in op.src)) # noqa: F821
      if op.op in GroupOp.Buffer and op in self.bufs:
        st = self.sts[self.bufs.index(op)]
-        # replace the VIEW source
-        if op.op is Ops.LOAD:
-          global_buf = ret.src[0].src[0]
-          # add locals cache
-          local_shape = [s if self.axis_types[i] not in (AxisType.GLOBAL, AxisType.REDUCE)
-                         and ss != 0 else 1 for i,(s,ss) in enumerate(zip(st.shape, st.real_strides()))]
-          # NOTE: this can have any permutation here
-          lst = lst_store = ShapeTracker.from_shape(tuple(local_shape)).expand(st.shape)
-          lbuf = UOp(Ops.DEFINE_LOCAL, dtype=global_buf.dtype.base.ptr(prod(local_shape), AddrSpace.LOCAL), arg=1000+global_buf.arg)
-          # TODO: permute to place any UPCASTs in 0 stride LOCALs
-          # any permutes of st + lst_store together are fine
-          print(list(zip(self.shape_str(), st.shape, st.real_strides())))
-          ret = ret.replace(src=(ret.src[0].replace(arg=st),)+ret.src[1:])
-          ret = lbuf.view(lst).load(lbuf.view(lst_store).store(ret))
-        else:
-          ret = ret.replace(src=(ret.src[0].replace(arg=st),)+ret.src[1:])
-        return ret
+        # NOTE: if CONST got masked after applying opts, we create a new VALID
+        if op.op is Ops.CONST and any(v.mask is not None for v in st.views): return op.view(st).valid()
+        # otherwise we just replace the VIEW source
+        return ret.replace(src=(ret.src[0].replace(arg=st),)+ret.src[1:])
      if op.op is Ops.SINK:
        # NOTE: should group_for_reduces be added to the local_dims?
        kernel_name = ret.arg.name if ret.arg is not None else self.name if name_override is None else name_override
@@ -477,7 +463,8 @@ class Kernel:
        if (tc := self.tensor_core) and self.use_tensor_cores == 1:
          # get reduce/upcast axes for the tensor cores
          tc_reduce_axes = self.shape_str_to_axis([f"r{i}" for i in range(len(tc.get_reduce_axes()))])
-          base_upcast_axes = tuple([(s,2) for s in self.shape_str_to_axis(tc.base_upcast_axes())])
+          base_upcast_axes = tuple([(s,2) for s in self.shape_str_to_axis([f"r{i}" for i in range(len(tc.get_reduce_axes()))] + \
+                                                                          [f"u{i}" for i in range(len(tc.get_upcast_axes()))])])[::-1]
          tc_upcast_axes = tuple([base_upcast_axes[:int(math.log2(tc.elements_per_thread[i]))] for i in range(3)])

          # permute the srcs
@@ -25,9 +25,6 @@ class TensorCore: # D = A * B + C, A is (M x K), B is (K x N), C and D are (M x
  def get_reduce_axes(self): return [(i, 2) for i in range(int(math.log2(self.dims[2])))]
  def get_upcast_axes(self): return [opt for opt in self.opts if opt[0] == "u"]
  def get_local_axes(self): return [opt for opt in self.opts if opt[0] == "l"]
-  def base_upcast_axes(self):
-    # this is defined in the swizzle. first we use the upcast axes, then the reduce
-    return ([f"r{i}" for i in range(len(self.get_reduce_axes()))] + [f"u{i}" for i in range(len(self.get_upcast_axes()))])[::-1]
  def __str__(self): return "_".join(["WMMA"] + list(map(str, self.dims)) + [self.dtype_in.name, self.dtype_out.name])
  def __post_init__(self):
    # all axes have size 2, <local> <reduce> <upcast> is the order
@@ -43,19 +40,6 @@ class TensorCore: # D = A * B + C, A is (M x K), B is (K x N), C and D are (M x
    assert len(self.swizzle[0][1]) == len(self.swizzle[1][1]) == upcast_axes, "upcast swizzle size is wrong"
    assert len(self.swizzle[0][2]) == len(self.swizzle[1][2]) == reduce_axes, "reduce swizzle size is wrong"
    assert all(len(s) == local_axes+upcast_axes+reduce_axes for s in self._remaps()), "remaps are the wrong size"
-    # check elements_per_thread
-    un, ln = 0, 0
-    zero_stride_0 = []
-    zero_stride_1 = []
-    for o in self.opts:
-      if o[1] == '0': zero_stride_0.append(o[0] + str(un if o[0] == 'u' else ln))
-      if o[1] == '1': zero_stride_1.append(o[0] + str(un if o[0] == 'u' else ln))
-      if o[0] == 'u': un += 1
-      if o[0] == 'l': ln += 1
-    upcasted_0 = [x for x in (self.swizzle[0][1] + self.swizzle[0][2]) if x not in zero_stride_0 and x[0] != 'l']
-    upcasted_1 = [x for x in (self.swizzle[1][1] + self.swizzle[1][2]) if x not in zero_stride_1 and x[0] != 'l']
-    assert 2**len(upcasted_0) == self.elements_per_thread[0], f"mismatch in elements_per_thread[0], {upcasted_0} vs {self.elements_per_thread[0]}"
-    assert 2**len(upcasted_1) == self.elements_per_thread[1], f"mismatch in elements_per_thread[1], {upcasted_1} vs {self.elements_per_thread[1]}"

 # ***** NVIDIA *****

@@ -81,14 +65,12 @@ cuda_sm75: list[TensorCore] = cuda_8168_f16

 # https://gpuopen.com/learn/wmma_on_rdna3/
 amd_rdna3 = [TensorCore(dims=(16,16,16), threads=32, elements_per_thread=(16,16,8), dtype_in=di, dtype_out=do,
-  opts=("l0","l0","l0","l0","l1","u1","u1","u1"),
-  swizzle=((('l4', 'u0', 'u1', 'u2', 'l0'), ('r1', 'r2', 'r3'), ('l1', 'l2', 'l3', 'r0')),
-           (('l0', 'l1', 'l2', 'l3', 'l4'), ('r1', 'r2', 'r3'), ('u0', 'u1', 'u2', 'r0'))))
+  opts=("l0","l0","l0","l0","l1","u1","u1","u1"), swizzle=((('l4', 'u0', 'u1', 'u2', 'l0'), ('r1', 'r2', 'r3'), ('l1', 'l2', 'l3', 'r0')),
+                                                           (('l0', 'l1', 'l2', 'l3', 'l4'), ('r1', 'r2', 'r3'), ('u0', 'u1', 'u2', 'r0'))))
  for di,do in [(dtypes.half,dtypes.float),(dtypes.half,dtypes.half),(dtypes.bfloat16,dtypes.float)]]
 amd_rdna4 = [TensorCore(dims=(16,16,16), threads=32, elements_per_thread=(8,8,8), dtype_in=di, dtype_out=do,
-  opts=("l0","l0","l0","l0","u1","u1","u1","l1"),
-  swizzle=((('u0', 'u1', 'u2', 'l4', 'r2'), ('r0', 'r1', 'r3'), ('l0', 'l1', 'l2', 'l3')),
-           (('l0', 'l1', 'l2', 'l3', 'r2'), ('r0', 'r1', 'r3'), ('l4', 'u0', 'u1', 'u2'))))
+  opts=("l0","l0","l0","l0","u1","u1","u1","l1"), swizzle=((('u0', 'u1', 'u2', 'l4', 'r2'), ('r0', 'r1', 'r3'), ('l0', 'l1', 'l2', 'l3')),
+                                                           (('l0', 'l1', 'l2', 'l3', 'r2'), ('r0', 'r1', 'r3'), ('l4', 'u0', 'u1', 'u2'))))
  for di,do in [(dtypes.half,dtypes.float),(dtypes.half,dtypes.half),(dtypes.bfloat16,dtypes.float),(dtypes.bfloat16,dtypes.bfloat16)]]

 # https://gpuopen.com/learn/amd-lab-notes/amd-lab-notes-matrix-cores-readme
@@ -9,7 +9,7 @@ from tinygrad.renderer import Renderer
 from tinygrad.codegen.devectorizer import no_vectorized_alu

 base_rewrite = PatternMatcher([
-  (UPat(Ops.DEFINE_REG, name="x"), lambda ctx,x: f"{ctx.render_dtype(x.dtype.base)} {ctx[x]}[{x.dtype.size}];"),
+  (UPat(Ops.DEFINE_REG, name="x"), lambda ctx,x: f"{ctx.render_dtype(x.dtype.base)} {ctx[x]}[{x.dtype.size}] = {{{ctx[x.src[0]]}}};"),
  (UPat(Ops.IF, name="x"), lambda ctx,x: f"if ({ctx[x.src[0]]}) {{"),
  (UPat((Ops.ENDIF, Ops.ENDRANGE)), lambda ctx: "}"),
  (UPat(Ops.WMMA, name="x"), lambda ctx,x: f"__{x.arg[0]}({ctx[x.src[0]]}, {ctx[x.src[1]]}, {ctx[x.src[2]]})"),
@@ -25,7 +25,7 @@ base_rewrite = PatternMatcher([
  (UPat(Ops.BITCAST, name="x"), lambda ctx,x: f"(*(({ctx.buffer_prefix}{ctx.render_dtype(x.dtype)}*)&{ctx[x.src[0]]}))"),
  (UPat(Ops.DEFINE_LOCAL, name="x"), lambda ctx,x: f"{ctx.smem_align}{ctx.smem_prefix}{ctx.render_dtype(x.dtype.base)} {ctx[x]}[{x.dtype.size}];"),
  (UPat(Ops.BARRIER), lambda ctx: ctx.barrier),
-  (UPat(Ops.PRECAST, name="x"), lambda ctx,x: ctx[x.src[0]]),
+  (UPat(Ops.NOOP, name="x"), lambda ctx,x: ctx[x.src[0]]),
  (UPat(Ops.SPECIAL, name="x"), lambda ctx,x: f"{ctx.code_for_workitem[x.arg[0][0]](x.arg[0][-1])}; /* {x.arg[1]} */"),
  # const
  (UPat(Ops.CONST, arg=math.inf, name="x"), lambda ctx, x: f"({ctx.render_cast(x.dtype, ctx.infinity)})"),
@@ -47,7 +47,7 @@ base_rewrite = PatternMatcher([
   lambda ctx,buf,idx: f"({ctx[buf]}+{strip_parens(ctx[idx]) if idx.arg == Ops.ADD else ctx[idx]})"),
  (UPat(Ops.LOAD, src=(UPat(Ops.INDEX, src=(UPat(), UPat(), UPat.var("gate"))).or_casted("bidx"), UPat.var("var")), allow_any_len=True),
   lambda ctx,bidx,var,gate: f"({ctx[gate]}?*{ctx[bidx]}:{ctx[var]})"),
-  (UPat(Ops.LOAD, src=(UPat.var('bidx'),), allow_any_len=True), lambda ctx,bidx: f"(*{ctx[bidx]})"),
+  (UPat(Ops.LOAD, src=(UPat.var('bidx'),), allow_any_len=True), lambda ctx,bidx: f"*{ctx[bidx]}"),
  (UPat(Ops.STORE, src=(UPat.var('bidx'), UPat.var("var")), allow_any_len=True), lambda ctx,bidx,var: f"*{ctx[bidx]} = {ctx[var]};"),
  # alu/gep
  # TODO: look for left-associative
@@ -60,9 +60,9 @@ base_rewrite = PatternMatcher([
 ])

 extra_pm = PatternMatcher([
-  # insert a PRECAST before BITCAST to force it to be rendered. not needed on all backends?
-  (UPat(Ops.BITCAST, name="x"), lambda x: UOp(Ops.BITCAST, x.dtype, (UOp(Ops.PRECAST, x.src[0].dtype, x.src),))
-   if x.src[0].op not in {Ops.PRECAST, Ops.LOAD, Ops.CUSTOM} else None),
+  # insert a NOOP before BITCAST to force it to be rendered. not needed on all backends?
+  (UPat(Ops.BITCAST, name="x"),
+   lambda x: UOp(Ops.BITCAST, x.dtype, (UOp(Ops.NOOP, x.src[0].dtype, x.src),)) if x.src[0].op not in {Ops.NOOP, Ops.LOAD, Ops.CUSTOM} else None),
  # rewrite MAX to CMPLT + WHERE (max function is annoying on many cstyle backends)
  (UPat(Ops.MAX, name="m"), lambda m: (m.src[0] < m.src[1]).where(m.src[1], m.src[0])),
  # devectorize any bools
@@ -75,10 +75,6 @@ extra_pm = PatternMatcher([

 def uops_to_dtypes(uops:list[UOp]) -> list[DType]: return dedup(u.dtype for u in uops if not isinstance(u.dtype, (ImageDType, PtrDType)))

-# (name, dims, dtype_in, dtype_out, device, threads, upcast_axes, reduce_axes)
-def wmma_args(uops:list[UOp]):
-  return dedup((uop.arg[0], uop.arg[1], uop.src[0].dtype.scalar(), uop.dtype.scalar(), *(uop.arg[4:8])) for uop in uops if uop.op is Ops.WMMA)
-
 class CStyleLanguage(Renderer):
  kernel_typedef: str = "void"
  buffer_prefix: str = ""
@@ -122,9 +118,7 @@ class CStyleLanguage(Renderer):
  def render_dtype(self, dt:DType, mutable=True) -> str:
    if isinstance(dt, ImageDType): return f"{'write_only' if mutable else 'read_only'} image2d_t"
    if isinstance(dt, PtrDType):
-      prefix = ""
-      if dt.addrspace == AddrSpace.LOCAL and self.smem_prefix_for_cast: prefix = self.smem_prefix
-      if dt.addrspace == AddrSpace.GLOBAL: prefix = self.buffer_prefix
+      prefix = self.smem_prefix if dt.addrspace == AddrSpace.LOCAL and self.smem_prefix_for_cast else self.buffer_prefix
      return prefix + self.render_dtype(dt.base) + "*"
    if dt.count > 1: return self.type_map.get(scalar:=dt.scalar(), scalar.name).replace(" ", "_") + str(dt.count)
    return self.type_map.get(scalar:=dt.scalar(), scalar.name)
@@ -141,7 +135,6 @@ class CStyleLanguage(Renderer):
    c: defaultdict[str, int] = defaultdict(int)
    name = "test"
    for u in uops:
-      if u.op is Ops.NOOP: continue
      if u.op is Ops.SINK:
        if u.arg is not None: name = u.arg.function_name
        continue
@@ -161,7 +154,7 @@ class CStyleLanguage(Renderer):
      elif u.op is Ops.RANGE: r[u] = f"ridx{u.arg}"
      else:
        prefix = {Ops.WMMA: "wmma", Ops.DEFINE_LOCAL: "temp", Ops.CONST: "const",
-                  Ops.CAST: "cast", Ops.BITCAST: "cast", Ops.GEP: "gep", Ops.VECTORIZE: "cast", Ops.PRECAST: "precast",
+                  Ops.CAST: "cast", Ops.BITCAST: "cast", Ops.GEP: "gep", Ops.VECTORIZE: "cast", Ops.NOOP: "precast",
                  Ops.INDEX: "bidx", Ops.DEFINE_REG: "acc", Ops.LOAD: "val"}.get(u.op, "alu")
        r[u] = f"{prefix}{c[prefix]}"

@@ -170,13 +163,13 @@ class CStyleLanguage(Renderer):

      if u.op in {Ops.ENDIF, Ops.ENDRANGE}: depth -= 1
      if (u.op is not Ops.CAST or u.dtype.vcount == 1) and (u.op in {Ops.CONST, Ops.GEP, Ops.INDEX, Ops.CUSTOMI} or \
-        (u.op is Ops.LOAD and cast(PtrDType, u.src[0].dtype).addrspace == AddrSpace.REG) or \
-        (u.op is Ops.CAST and isinstance(u.dtype, PtrDType)) or \
        (u.op in {Ops.VECTORIZE, *(GroupOp.ALU-{Ops.WHERE}), Ops.CAST, Ops.BITCAST} and child_count[u] == 1 and not getenv("EXPAND_SSA"))):
        r[u] = l
      else:
-        if u.op in {Ops.RANGE, Ops.DEFINE_LOCAL, Ops.STORE, Ops.DEFINE_REG} or u.dtype == dtypes.void: pass
-        else: l = f"{self.render_dtype(u.dtype)} {r[u]} = {l}" + (";" if u.op is not Ops.SPECIAL else "")
+        if u.op in {Ops.RANGE, Ops.DEFINE_LOCAL, Ops.STORE, Ops.DEFINE_REG} or u.dtype == dtypes.void:
+          if u.op is Ops.STORE: r[u] = r[u.src[0]]
+        else:
+          l = f"{self.render_dtype(u.dtype)} {r[u]} = {l}" + (";" if u.op is not Ops.SPECIAL else "")
        kernel.append("  "*depth + l)
        if prefix: c[prefix] += 1  # if it was used, increment
      if u.op in {Ops.IF, Ops.RANGE}: depth += 1
@@ -216,7 +209,7 @@ class ClangRenderer(CStyleLanguage):
  def _render_defines(self, uops) -> list[str]:
    prefix = [self.render_vector_prefix(dt) for dt in uops_to_dtypes(uops) if dt.count > 1]
    # https://github.com/corsix/amx
-    for name, (N, M, _), dtype_in, _, _, _, _, _ in wmma_args(uops):
+    for name, (N, M, _), dtype_in, _, _, _, _, _ in dedup([uop.arg for uop in uops if uop.op is Ops.WMMA]):
      prefix += [
        '#define AMX_SET(imm5) __asm("nop\\nnop\\nnop\\n.word (0x201000+(%0<<5)+%1)" : : "i"(17), "i"(imm5) : "memory")',
        '#define AMX(op, gpr, btf) __asm(".word (0x201000+(%0 << 5)+0%1-((0%1>>4)*6))" : : "i"(op), "r"((unsigned long long)(gpr)+(btf)) : "memory")',
@@ -276,9 +269,9 @@ class IntelRenderer(OpenCLRenderer):

  def render_kernel(self, function_name, kernel, bufs, uops, prefix=None) -> str:
    prefix = []
-    for name, _, dtype_in, dtype_out, _, _, _, _ in wmma_args(uops):
-      dt_in = ("ushort", "bf16") if dtype_in == dtypes.bfloat16 else (dtype_in.name, "f16")
-      prefix.append(f"""{dtype_out.name}8 __{name}({dt_in[0]}16 a, {dt_in[0]}16 b, {dtype_out.name}8 c) {{
+    for arg in dedup([uop.arg for uop in uops if uop.op is Ops.WMMA]):
+      dt_in = ("ushort", "bf16") if arg[2] == dtypes.bfloat16 else (arg[2].name, "f16")
+      prefix.append(f"""{arg[3].name}8 __{arg[0]}({dt_in[0]}16 a, {dt_in[0]}16 b, {arg[3].name}8 c) {{
    return intel_sub_group_{dt_in[1]}_{dt_in[1]}_matrix_mad_k16(as_int8(a), as_int8(b), c);\n}}""")
    return super().render_kernel(function_name, kernel, bufs, uops, prefix or None)

@@ -314,13 +307,13 @@ class MetalRenderer(CStyleLanguage):
  ]) + base_rewrite

  def render_kernel(self, function_name, kernel, bufs, uops, prefix=None):
-    prefix = ["#include <metal_stdlib>","using namespace metal;"]
-    for name, _, dtype_in, dtype_out, _, _, _, _ in wmma_args(uops): prefix.append(
-  f"""{(dstr_out:=self.render_dtype(dtype_out.vec(2)))} __{name}({(dstr_in:=self.render_dtype(dtype_in.vec(2)))} a, {dstr_in} b, {dstr_out} c){{
-  simdgroup_{self.render_dtype(dtype_in)}8x8 mat_a, mat_b; simdgroup_{self.render_dtype(dtype_out)}8x8 mat_c;
+    prefix, wmma_args = ["#include <metal_stdlib>","using namespace metal;"], set([uop.arg for uop in uops if uop.op is Ops.WMMA])
+    for arg in wmma_args: prefix.append(
+  f"""{(dtype_out:=self.render_dtype(arg[3].vec(2)))} __{arg[0]}({(dtype_in:=self.render_dtype(arg[2].vec(2)))} a, {dtype_in} b, {dtype_out} c){{
+  simdgroup_{self.render_dtype(arg[2])}8x8 mat_a, mat_b; simdgroup_{self.render_dtype(arg[3])}8x8 mat_c;
  mat_a.thread_elements()[0] = a[0]; mat_b.thread_elements()[0] = b[0]; mat_c.thread_elements()[0] = c[0];
  mat_a.thread_elements()[1] = a[1]; mat_b.thread_elements()[1] = b[1]; mat_c.thread_elements()[1] = c[1];
-  simdgroup_multiply_accumulate(mat_c, mat_a, mat_b, mat_c);\n  return {dstr_out}(mat_c.thread_elements()[0], mat_c.thread_elements()[1]);\n}}""")
+  simdgroup_multiply_accumulate(mat_c, mat_a, mat_b, mat_c);\n  return {dtype_out}(mat_c.thread_elements()[0], mat_c.thread_elements()[1]);\n}}""")
    return super().render_kernel(function_name, kernel, bufs, uops, prefix)

 _nms = "xyzwabcdefghijkl"
@@ -369,7 +362,7 @@ class CUDARenderer(CStyleLanguage):

    dt_map_in = { dtypes.float: "tf32", dtypes.half: "f16", dtypes.bfloat16: "bf16" }
    dt_map_out = { dtypes.float: "f32", dtypes.half: "f16" }
-    for name, (N, M, K), dtype_in, dtype_out, _, _, upcast_axes, _ in wmma_args(uops):
+    for name, (N, M, K), dtype_in, dtype_out, _, _, upcast_axes, _ in dedup([uop.arg for uop in uops if uop.op is Ops.WMMA]):
      upcast_sizes = [prod(size for _, size in upcast) for upcast in upcast_axes]
      wmma_dtypes = [self.render_dtype(dtype.vec(size)) for dtype, size in zip([dtype_in, dtype_in, dtype_out], upcast_sizes)]
      n_operands = [size*dtype.itemsize//4 for dtype, size in zip([dtype_in, dtype_in, dtype_out], upcast_sizes)] # 4 => CUDA reg size in bytes
@@ -464,15 +457,15 @@ class AMDRenderer(CStyleLanguage):
    if any(dt.scalar() == dtypes.bfloat16 for dt in used_dtypes): prefix.append("typedef unsigned short hip_bfloat16;")
    prefix += [self.render_vector_prefix(dt) for dt in used_dtypes if dt.count > 1]

-    for name, _, dtype_in, dtype_out, _, _, _, _ in wmma_args(uops): # TODO: handle TCs f32_bf16 and bf16_bf16 w/ wrapper
+    for arg in dedup([uop.arg for uop in uops if uop.op is Ops.WMMA]): # TODO: handle TCs f32_bf16 and bf16_bf16 w/ wrapper
      if self.tensor_cores == tc.amd_cdna:
-        prefix.append(f"#define __{name} __builtin_amdgcn_mfma_f32_16x16x16{'f16' if dtype_in == dtypes.half else 'bf16_1k'}")
+        prefix.append(f"#define __{arg[0]} __builtin_amdgcn_mfma_f32_16x16x16{'f16' if arg[2] == dtypes.half else 'bf16_1k'}")
      # #define __WMMA_16_16_16_half_half __builtin_amdgcn_wmma_f16_16x16x16_f16_w32_gfx12
      elif self.tensor_cores == tc.amd_rdna4:
-        prefix.append(f"#define __{name} __builtin_amdgcn_wmma_{type_map[dtype_out]}_16x16x16_{type_map[dtype_in]}_w32_gfx12")
-      elif dtype_out == dtypes.float:
-        prefix.append(f"#define __{name} __builtin_amdgcn_wmma_f32_16x16x16_{'f16' if dtype_in == dtypes.half else 'bf16'}_w32")
-      else: prefix.append(f"static inline __attribute__((device)) half8 __{name}"+"""(half16 a, half16 b, half8 c) {
+        prefix.append(f"#define __{arg[0]} __builtin_amdgcn_wmma_{type_map[arg[3]]}_16x16x16_{type_map[arg[2]]}_w32_gfx12")
+      elif arg[3] == dtypes.float:
+        prefix.append(f"#define __{arg[0]} __builtin_amdgcn_wmma_f32_16x16x16_{'f16' if arg[2] == dtypes.half else 'bf16'}_w32")
+      else: prefix.append(f"static inline __attribute__((device)) half8 __{arg[0]}"+"""(half16 a, half16 b, half8 c) {
  half16 c_frag = {}; half8 d; for (int n = 0; n < 8; n++) { c_frag[n*2] = c[n]; }
  c_frag = __builtin_amdgcn_wmma_f16_16x16x16_f16_w32(a, b, c_frag, false);
  for (int n = 0; n < 8; n++) { d[n] = c_frag[n*2]; } return d;\n}""")
@@ -48,9 +48,8 @@ def render_wmma_amx(ctx, wmma: UOp) -> str:
 def render_wmma_amd(ctx, wmma: UOp, arch: str) -> str:
  dt_map = {dtypes.half: "f16", dtypes.float: "f32", dtypes.bfloat16: "bf16", dtypes.ushort: "bf16"}
  # https://github.com/llvm/llvm-project/blob/main/clang/test/CodeGenOpenCL/builtins-amdgcn-mfma.cl
-  if arch.split(":")[0] in {"gfx942", "gfx950"}:
-    return f"  {ctx[wmma]} = call {ldt(wmma.dtype)} @llvm.amdgcn.mfma.{dt_map[wmma.src[-1].dtype.scalar()]}" + \
-           f".16x16x16{dt_map[wmma.src[0].dtype.scalar()]}(" + ", ".join([f"{ldt(w.dtype)} {ctx[w]}" for w in wmma.src]) + ", i32 0, i32 0, i32 0)"
+  if arch.split(":")[0] == "gfx942": return f"  {ctx[wmma]} = call {ldt(wmma.dtype)} @llvm.amdgcn.mfma.{dt_map[wmma.src[-1].dtype.scalar()]}" + \
+    f".16x16x16{dt_map[wmma.src[0].dtype.scalar()]}(" + ", ".join([f"{ldt(w.dtype)} {ctx[w]}" for w in wmma.src]) + ", i32 0, i32 0, i32 0)"
  # https://github.com/llvm/llvm-project/blob/main/llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.wmma_32.ll
  # example: %wmma0 = call <8 x float> @llvm.amdgcn.wmma.f32.16x16x16.f16(<16 x half> %v99,<16 x half> %v100,<8 x float> %v101)
  return f"  {ctx[wmma]} = call {ldt(wmma.dtype)} @llvm.amdgcn.wmma.{dt_map[wmma.src[-1].dtype.scalar()]}.16x16x16." + \
@@ -161,7 +160,6 @@ class LLVMRenderer(Renderer):

    name = "test"
    for u in uops:
-      if u.op is Ops.NOOP: continue
      if u.op is Ops.SINK:
        if u.arg is not None: name = u.arg.function_name
        continue
@@ -172,7 +170,13 @@ class LLVMRenderer(Renderer):
        r[u] = f"%{'local' if u.op is Ops.DEFINE_LOCAL else 'reg'}_{str(u.arg).replace('(', '').replace(')', '').replace(',', '_').replace(' ', '')}"
        assert isinstance(u.dtype, PtrDType)
        if self.device == "LLVM" or u.op is Ops.DEFINE_REG:
-          kernel.append(f"  {r[u]} = alloca [{u.dtype.size} x {ldt(u.dtype.base)}]")
+          # put alloca in the beginning of the function always
+          kernel = [f"  {r[u]} = alloca [{u.dtype.size} x {ldt(u.dtype.base)}]"] + kernel
+          if u.op is Ops.DEFINE_REG:
+            # store the const here. TODO: this should be INDEX and STORE and shouldn't be handcoded here
+            for i in range(u.dtype.size):
+              kernel.append(f"  {r[u]}_idx_{i} = getelementptr inbounds {ldt(u.dtype.base)}, {ldt(u.dtype)} {r[u]}, i32 {i}")
+              kernel.append(f"  store {ldt(u.src[0].dtype)} {r[u.src[0]]}, {ldt(u.dtype)} {r[u]}_idx_{i}")
        else:
          local_args.append(f"@{r[u][1:]} = internal unnamed_addr addrspace(3) global [{u.dtype.size} x {ldt(u.dtype)}] undef, align 16")
          kernel.append(f"  {r[u]} = addrspacecast [{u.dtype.size} x {ldt(u.dtype)}] addrspace(3)* @{r[u][1:]} to [{u.dtype.size} x {ldt(u.dtype)}]*")
@@ -189,6 +193,9 @@ class LLVMRenderer(Renderer):
        if (l:=self.string_rewrite.rewrite(u, ctx=r)) is None:
          raise RuntimeError(f"failed to render {u.op} with {u.dtype} srcs {[x.dtype for x in u.src]}")
        kernel.append(cast(str, l))
+
+        # stores pass the first arg through
+        if u.op is Ops.STORE: r[u] = r[u.src[0]]
    return tuple(local_args), self._render_fn(name, args, kernel, prefix)

 barrier = 'fence syncscope("workgroup") release\ntail call void @llvm.amdgcn.s.barrier()\nfence syncscope("workgroup") acquire\n'
@@ -110,7 +110,10 @@ string_rewrite = PatternMatcher([
  (UPat(Ops.LOAD, name="x", src=(UPat.var('loc'),), allow_any_len=True),
   lambda ctx, x, loc: f"ld.{mem_type(x)}.v{x.dtype.count}.{ctx.mem_types[x.dtype.scalar()]} {{{', '.join(ctx.r[x])}}}, [{ctx.r[loc]}+0];" \
     if x.dtype.count > 1 else f"ld.{mem_type(x)}.{ctx.mem_types[x.dtype]} {ctx.r[x]}, [{ctx.r[loc]}+0];"),
-  (UPat(Ops.DEFINE_REG, src=()), lambda ctx: []),
+  (UPat(Ops.DEFINE_REG, name="x", src=(UPat.cvar("pred", dtype=dtypes.bool),), allow_any_len=True), lambda ctx, x, pred: [
+    f"setp.ne.s16 {ctx.r[pred]}, {render_val(pred.arg, pred.dtype)}, 0;", f"mov.pred {ctx.r[x]}, {ctx.r[pred]};"]),
+  (UPat(Ops.DEFINE_REG, name="x", src=(UPat.cvar("pred"),), allow_any_len=True),
+   lambda ctx, x, pred: f"mov.b{ctx.types[x.dtype.base][1:]} {ctx.r[x]}, {render_val(pred.arg, x.dtype.base)};"),
  (UPat(Ops.RANGE, name="x"), lambda ctx, x: [f"mov.u32 {ctx.r[x]}, 0;", "LOOP_" + f"{ctx.r[x][1:]}:"]),
  (UPat(Ops.ENDRANGE, name="x", src=(UPat.var("src0"),)), lambda ctx, x, src0: [
    ctx.code_for_op[Ops.ADD](ctx.r[src0], ctx.r[src0], "1", dtypes.int, ctx.types[dtypes.int]),
@@ -173,7 +176,6 @@ class PTXRenderer(Renderer):

    name = "test"
    for u in uops:
-      if u.op is Ops.NOOP: continue
      if u.op is Ops.SINK:
        if u.arg is not None: name = u.arg.function_name
        continue
@@ -186,18 +188,11 @@ class PTXRenderer(Renderer):
      if u.op in {Ops.CAST, Ops.BITCAST} and (u.src[0].dtype == u.dtype or isinstance(u.src[0].dtype, PtrDType)):
        r[u] = r[u.src[0]]
        continue
-      if u.op is Ops.DEFINE_REG:
-        r[u] = [ssa("reg", u, self.types[u.dtype.base.scalar()]) for _ in range(cast(PtrDType, u.dtype).size)]
-        continue
      if u.op in {Ops.INDEX, Ops.LOAD, Ops.STORE} and isinstance(u.src[0].dtype, PtrDType) and u.src[0].dtype.addrspace == AddrSpace.REG:
-        if u.op is Ops.INDEX:
-          assert u.src[1].op == Ops.CONST, f"index on REG in ptx only supported on CONST, not {u.src[1].op}"
-          r[u] = r[u.src[0]][u.src[1].arg]
-        else:
-          r[u] = r[u.src[0]]
-          if u.op is Ops.STORE:
-            typ = "pred" if u.src[1].dtype == dtypes.bool else ("b"+self.types[u.src[1].dtype][1:])
-            kernel.append(f"mov.{typ} {self.r[u.src[0]]}, {self.r[u.src[1]]};")
+        r[u] = r[u.src[0]]
+        if u.op is Ops.STORE:
+          typ = "pred" if u.src[1].dtype == dtypes.bool else ("b"+self.types[u.src[1].dtype][1:])
+          kernel.append(f"mov.{typ} {self.r[u.src[0]]}, {self.r[u.src[1]]};")
        continue
      if u.op is Ops.SPECIAL: r[u] = "%" + u.arg[0]
      elif u.op is Ops.DEFINE_VAR: bufs.append((u.arg[0], u.dtype))
@@ -207,12 +202,12 @@ class PTXRenderer(Renderer):
      elif u.op is Ops.DEFINE_GLOBAL: bufs.append((f"data{u.arg}", u.dtype))
      elif u.op is Ops.WMMA:
        # registers for packing/unpacking input and acc
-        self.wmma_r = [[ssa("wmma_in", dtype="b32") for _ in range(0, len(r[u.src[0]]), 4 // u.src[0].dtype.scalar().itemsize)],
-                       [ssa("wmma_in", dtype="b32") for _ in range(0, len(r[u.src[1]]), 4 // u.src[0].dtype.scalar().itemsize)],
-                       [ssa("wmma_acc", dtype="b32") for _ in range(0, len(r[u.src[2]]), 4 // u.dtype.scalar().itemsize)]]
+        self.wmma_r = [[ssa("wmma_in", dtype="b32") for _ in range(0, len(r[u.src[0]]), 4 // u.arg[2].itemsize)],
+                       [ssa("wmma_in", dtype="b32") for _ in range(0, len(r[u.src[1]]), 4 // u.arg[2].itemsize)],
+                       [ssa("wmma_acc", dtype="b32") for _ in range(0, len(r[u.src[2]]), 4 // u.arg[3].itemsize)]]
        r[u] = [ssa("wmma", dtype=self.types[u.dtype.scalar()]) for _ in range(u.dtype.count)]
      prefix, dtype = {Ops.CAST: ("cast", None), Ops.BITCAST: ("cast", None), Ops.ENDRANGE: ("pred", "pred"), Ops.RANGE: ("ridx", None),
-        Ops.DEFINE_VAR: ("dat", None), Ops.CONST: ("const", None), Ops.DEFINE_LOCAL:("local",self.types[dtypes.ulong]),
+        Ops.DEFINE_REG: ("acc", None), Ops.DEFINE_VAR: ("dat", None), Ops.CONST: ("const", None), Ops.DEFINE_LOCAL:("local",self.types[dtypes.ulong]),
        Ops.DEFINE_GLOBAL: ("dat", self.types[dtypes.ulong]), **{op: ("alu", None) for op in GroupOp.ALU}}.get(u.op, (None, None))
      if prefix: r[u] = ssa(prefix, u, dtype)

@@ -40,6 +40,11 @@ wgsl_matcher = PatternMatcher([
  (UPat.var("x") >> UPat.var("y"), lambda x,y: UOp(Ops.SHR, x.dtype, (x,y.cast(dtypes.uint))) if y.dtype != dtypes.uint else None),
  ]) + extra_pm

+def webgpu_define_reg(ctx, x):
+  ret = [f"var {ctx[x]}: array<{ctx.buf_map(x.dtype)},{x.dtype.size//(4//x.dtype.itemsize) if is_packed(x.dtype) else x.dtype.size}>;"]
+  for i in range(x.dtype.size): ret.append(f"{ctx[x]}[{i}] = {ctx[x.src[0]]};")
+  return ' '.join(ret)
+
 class WGSLRenderer(CStyleLanguage):
  device = "WEBGPU"
  global_max = (65535, 65535, 65535)
@@ -59,8 +64,7 @@ class WGSLRenderer(CStyleLanguage):
     lambda x: f"bitcast<u32>({x.arg})" if x.arg < 0 else f"{x.arg&0xFFFFFFFF}u"),
    (UPat(Ops.DEFINE_LOCAL, name="x"), lambda ctx,x:
      f"var<workgroup> {ctx[x]}: array<{ctx.buf_map(x.dtype.base)},{x.dtype.size//(4//x.dtype.itemsize) if is_packed(x.dtype) else x.dtype.size}>;"),
-    (UPat(Ops.DEFINE_REG, name="x"), lambda ctx,x:
-     f"var {ctx[x]}: array<{ctx.buf_map(x.dtype)},{x.dtype.size//(4//x.dtype.itemsize) if is_packed(x.dtype) else x.dtype.size}>;"),
+    (UPat(Ops.DEFINE_REG, name="x"), webgpu_define_reg),
    (UPat(Ops.BITCAST, dtype=dtypes.half, name="x", src=(UPat(dtype=(dtypes.short, dtypes.ushort, dtypes.uint32),),)),
     lambda ctx,x: f"bitcast<vec2<f16>>({ctx[x.src[0]]})[0]"),
    (UPat(Ops.BITCAST, dtype=(dtypes.char, dtypes.uchar), name="x"), lambda ctx,x: f"bitcast<{ctx.type_map[x.dtype]}>({ctx[x.src[0]]}&0xFF)"),
@@ -1,11 +1,11 @@
 import collections, time
 from typing import Any, cast
-from tinygrad.helpers import round_up, PROFILE, merge_dicts, getenv
+from tinygrad.helpers import round_up, PROFILE, merge_dicts
 from tinygrad.runtime.support.hcq import HCQCompiled, HCQAllocator, HCQSignal, HCQBuffer, HWQueue, HCQArgsState, BumpAllocator
 from tinygrad.device import Buffer, BufferSpec, Compiled, Device, ProfileGraphEntry, ProfileGraphEvent
 from tinygrad.dtype import dtypes
 from tinygrad.uop.ops import UOp, Variable
-from tinygrad.engine.realize import ExecItem, BufferXfer, CompiledRunner, BufferCopy
+from tinygrad.engine.realize import ExecItem, BufferXfer, CompiledRunner
 from tinygrad.engine.jit import MultiGraphRunner

 class HCQGraph(MultiGraphRunner):
@@ -13,9 +13,6 @@ class HCQGraph(MultiGraphRunner):
    super().__init__(jit_cache, input_rawbuffers, var_vals)
    self.devices = list(set(cast(HCQCompiled, d) for ji in jit_cache for d in [Device[cast(Buffer, x).device] for x in ji.bufs]))

-    # CPU Device is always last
-    self.devices = sorted(self.devices, key=lambda x: 1 if x._is_cpu() else 0)
-
    # Replace input buffers with variables.
    self.hcq_bufs = [[cast(Buffer, x)._buf for x in ji.bufs] for ji in jit_cache]
    self.input_replace_to_var: dict[tuple[int, int], Variable] = {}
@@ -51,8 +48,7 @@ class HCQGraph(MultiGraphRunner):
    self.comp_queues: dict[HCQCompiled, HWQueue] = {dev: dev.hw_compute_queue_t() for dev in self.devices}
    self.copy_queues: dict[HCQCompiled, HWQueue] = {} # lazy allocation

-    self.signals: dict[Any, HCQSignal] = {**{dev: dev.new_signal(value=0) for dev in self.devices if dev.device != "CPU"},
-      **{"KICK": self.devices[0].new_signal(value=0)}, **{dev: self.devices[0].new_signal(value=0) for dev in self.devices if dev.device == "CPU"}}
+    self.signals: dict[Any, HCQSignal] = {**{dev: dev.new_signal(value=0) for dev in self.devices}, **{"KICK": self.devices[0].new_signal(value=0)}}
    self.kickoff_value: int = 0
    self.kickoff_var = UOp.variable("kickoff_var", 0, 0xffffffff, dtype=dtypes.uint32)

@@ -68,15 +64,10 @@ class HCQGraph(MultiGraphRunner):

    for dev, queue in self.comp_queues.items(): dev_access[queue].add(dev)

-    self.input_replace_map: dict[HCQCompiled, set[int]] = collections.defaultdict(set)
    self.fixedvars: dict[HCQCompiled, dict[Variable, int]] = {}

    for j,ji in enumerate(jit_cache):
-      if is_exec_prg:=isinstance(ji.prg, CompiledRunner): enqueue_dev: HCQCompiled = ji.prg.dev
-      else:
-        # For copy ops prioritize enqeueuing on the dest device, so reverse the buffers.
-        for b in cast(list[Buffer], ji.bufs[::-1]):
-          if (enqueue_dev:=cast(HCQCompiled, Device[b.device])).hw_copy_queue_t is not None: break
+      enqueue_dev: HCQCompiled = ji.prg.dev if (is_exec_prg:=isinstance(ji.prg, CompiledRunner)) else Device[ji.bufs[1].device] #type:ignore

      # set any fixedvars on the device
      self.fixedvars[enqueue_dev] = merge_dicts([self.fixedvars.get(enqueue_dev, {}), ji.fixedvars])
@@ -157,11 +148,10 @@ class HCQGraph(MultiGraphRunner):
      # Encode main commands based on ji type.
      if isinstance(ji.prg, CompiledRunner):
        enqueue_queue.exec(ji.prg._prg, self.ji_args[j], tuple(ji.prg.p.global_size or (1,1,1)), tuple(ji.prg.p.local_size or (1,1,1)))
-      elif isinstance(ji.prg, (BufferXfer, BufferCopy)):
+      elif isinstance(ji.prg, BufferXfer):
        dest, src = [cast(Buffer, x) for x in ji.bufs[0:2]]
-        for bufid, src in enumerate(cast(list[Buffer], ji.bufs)):
-          if (inprep_idx:=self.input_replace.get((j, bufid))) is not None: self.input_replace_map[enqueue_dev].add(inprep_idx)
-          else: cast(HCQAllocator, enqueue_dev.allocator).map(self.hcq_bufs[j][bufid])
+        cast(HCQAllocator, Device[src.device].allocator).map(dest._buf)
+
        enqueue_queue.copy(self.hcq_bufs[j][0].va_addr, self.hcq_bufs[j][1].va_addr, dest.nbytes)
        self.copy_to_devs[cast(HCQCompiled, Device[dest.device])].add(cast(HCQCompiled, Device[src.device]))

@@ -187,9 +177,6 @@ class HCQGraph(MultiGraphRunner):
    for sig in self.queue_signals_to_reset: sig.value = 0
    self.signals['KICK'].value = self.kickoff_value

-    for dev in self.devices:
-      for idx_to_map in self.input_replace_map[dev]: cast(HCQAllocator, dev.allocator).map(input_rawbuffers[idx_to_map]._buf)
-
    if PROFILE and self.kickoff_value > 1: self.collect_timestamps()

    hcq_var_vals = {self.kickoff_var: self.kickoff_value, **var_vals,
@@ -223,9 +210,3 @@ class HCQGraph(MultiGraphRunner):
    if PROFILE and self.kickoff_value >= 1: self.collect_timestamps()

    for fdev, buf in self.kernargs_bufs.items(): fdev.allocator._free(buf, BufferSpec(cpu_access=True))
-
-  @staticmethod
-  def supports_exec_item(dev, ei:ExecItem) -> bool:
-    # MOCKGPU is not supported, since it can't execute commands in parallel
-    copy = (isinstance(ei.prg, BufferCopy) and cast(HCQCompiled, dev).hw_copy_queue_t is not None) and not getenv("MOCKGPU")
-    return all(issubclass(type(Device[b.device]), HCQCompiled) for b in ei.bufs if b) and (isinstance(ei.prg, (CompiledRunner, BufferXfer)) or copy)
@@ -479,7 +479,7 @@ class AMDAllocator(HCQAllocator['AMDDevice']):
      self.dev.iface.free(opaque)
    except AttributeError: pass

-  def _map(self, buf:HCQBuffer): return self.dev.iface.map(buf._base if buf._base is not None else buf)
+  def _map(self, buf:HCQBuffer): self.dev.iface.map(buf._base if buf._base is not None else buf)

@dataclass(frozen=True)
 class ProfileSQTTEvent(ProfileEvent): device:str; se:int; blob:bytes; itrace:bool # noqa: E702
@@ -563,7 +563,7 @@ class KFDIface:
    self.mem_fault_event = kfd.AMDKFD_IOC_CREATE_EVENT(KFDIface.kfd, event_type=kfd.KFD_IOC_EVENT_MEMORY)
    self.hw_fault_event = kfd.AMDKFD_IOC_CREATE_EVENT(KFDIface.kfd, event_type=kfd.KFD_IOC_EVENT_HW_EXCEPTION)

-  def alloc(self, size:int, host=False, uncached=False, cpu_access=False, contiguous=False, cpu_addr=None) -> HCQBuffer:
+  def alloc(self, size:int, host=False, uncached=False, cpu_access=False, contiguous=False) -> HCQBuffer:
    flags = kfd.KFD_IOC_ALLOC_MEM_FLAGS_WRITABLE | kfd.KFD_IOC_ALLOC_MEM_FLAGS_EXECUTABLE | kfd.KFD_IOC_ALLOC_MEM_FLAGS_NO_SUBSTITUTE

    if uncached: flags |= kfd.KFD_IOC_ALLOC_MEM_FLAGS_COHERENT | kfd.KFD_IOC_ALLOC_MEM_FLAGS_UNCACHED | kfd.KFD_IOC_ALLOC_MEM_FLAGS_GTT
@@ -572,7 +572,7 @@ class KFDIface:
    if cpu_access or host: flags |= kfd.KFD_IOC_ALLOC_MEM_FLAGS_PUBLIC

    if flags & kfd.KFD_IOC_ALLOC_MEM_FLAGS_USERPTR:
-      buf = addr = cpu_addr or FileIOInterface.anon_mmap(0, size, mmap.PROT_READ | mmap.PROT_WRITE, mmap.MAP_SHARED | mmap.MAP_ANONYMOUS, 0)
+      buf = addr = FileIOInterface.anon_mmap(0, size, mmap.PROT_READ | mmap.PROT_WRITE, mmap.MAP_SHARED | mmap.MAP_ANONYMOUS, 0)
    else: buf, addr = 0, FileIOInterface.anon_mmap(0, size, 0, mmap.MAP_PRIVATE | mmap.MAP_ANONYMOUS | MAP_NORESERVE, 0)

    try: mem = kfd.AMDKFD_IOC_ALLOC_MEMORY_OF_GPU(self.kfd, va_addr=addr, size=size, base=addr, length=size, gpu_id=self.gpu_id,
@@ -606,8 +606,6 @@ class KFDIface:
    return dmaref

  def map(self, mem):
-    if mem.owner is not None and mem.owner._is_cpu(): return self.alloc(mem.size, host=True, cpu_addr=mem.va_addr)
-
    c_gpus = (ctypes.c_int32 * 1)(self.gpu_id)
    stm = kfd.AMDKFD_IOC_MAP_MEMORY_TO_GPU(self.kfd, handle=mem.meta.handle, device_ids_array_ptr=ctypes.addressof(c_gpus), n_devices=1)
    assert stm.n_success == 1
@@ -748,7 +746,7 @@ class AMDDevice(HCQCompiled):
                       (min((self.max_cu_id+1)*40, self.iface.props['array_count'] // self.iface.props['simd_arrays_per_engine'] * 512) - 1)
    self.xccs = self.iface.props.get('num_xcc', 1) if getenv("XCCS", 1) else 1
    # this is what llvm refers to as "architected flat scratch"
-    self.has_scratch_base_registers = self.target >= (11,0,0) or self.target in {(9,4,2), (9,5,0)}
+    self.has_scratch_base_registers = self.target >= (11,0,0) or self.target in {(9,4,2),(9,5)}

    # https://gitlab.freedesktop.org/agd5f/linux/-/blob/a1fc9f584c4aaf8bc1ebfa459fc57a3f26a290d8/drivers/gpu/drm/amd/amdkfd/kfd_queue.c#L391
    sgrp_size_per_cu, lds_size_per_cu, hwreg_size_per_cu = 0x4000, 0x10000, 0x1000
@@ -1,6 +1,6 @@
 from __future__ import annotations
 import platform, subprocess, sys, ctypes, functools, time, mmap
-from tinygrad.helpers import capstone_flatdump, getenv, from_mv, to_mv, OSX, mv_address, wait_cond, cpu_profile
+from tinygrad.helpers import capstone_flatdump, getenv, from_mv, to_mv, OSX, mv_address, wait_cond
 from tinygrad.device import Compiler, BufferSpec, DMACPURef
 from tinygrad.runtime.support.hcq import HCQCompiled, HCQAllocatorBase, HCQBuffer, HWQueue, HCQArgsState, HCQSignal, HCQProgram, MMIOInterface
 from tinygrad.runtime.support.elf import jit_loader
@@ -92,10 +92,8 @@ class CPUAllocator(HCQAllocatorBase):
    return HCQBuffer(va:=addr, sz:=size, meta=buf, view=MMIOInterface(va, sz, fmt='B'), owner=self.dev)
  def _as_buffer(self, src) -> memoryview: return to_mv(src.va_addr, src.size)
  def _as_dmaref(self, buf): return DMACPURef(buf.va_addr, buf.size)
-  def _copyin(self, dest, src:memoryview):
-    with cpu_profile('TINY -> CPU', self.dev.device, is_copy=True): ctypes.memmove(dest.va_addr, from_mv(src), len(src))
-  def _copyout(self, dest:memoryview, src):
-    with cpu_profile('CPU -> TINY', self.dev.device, is_copy=True): ctypes.memmove(from_mv(dest), src.va_addr, len(dest))
+  def _copyin(self, dest, src:memoryview): ctypes.memmove(dest.va_addr, from_mv(src), len(src))
+  def _copyout(self, dest:memoryview, src): ctypes.memmove(from_mv(dest), src.va_addr, len(dest))
  def _map(self, buf:HCQBuffer):
    if buf.view is None or not isinstance(buf.view, MMIOInterface): raise RuntimeError("Cannot map buffer without view to cpu")

@@ -1,6 +1,6 @@
-import subprocess, pathlib, struct, ctypes, tempfile, functools, contextlib, decimal, platform
+import os, pathlib, struct, ctypes, tempfile, functools, contextlib, decimal, platform
 from typing import Any, cast
-from tinygrad.helpers import prod, to_mv, getenv, round_up, cache_dir, T, init_c_struct_t, PROFILE, ProfileRangeEvent, cpu_profile, unwrap
+from tinygrad.helpers import prod, to_mv, getenv, round_up, cache_dir, T, init_c_struct_t, PROFILE, ProfileRangeEvent, cpu_profile
 from tinygrad.device import Compiled, Compiler, CompileError, LRUAllocator, ProfileDeviceEvent
 from tinygrad.renderer.cstyle import MetalRenderer

@@ -144,10 +144,7 @@ class MetalCompiler(Compiler):
    with tempfile.NamedTemporaryFile(delete=True) as shader:
      shader.write(lib)
      shader.flush()
-      proc = subprocess.Popen(f"cd {pathlib.Path(__file__).parents[2]}/extra/disassemblers/applegpu && python3 compiler_explorer.py {shader.name}",
-                              stdout=subprocess.PIPE, shell=True, text=True, bufsize=1)
-      for line in unwrap(proc.stdout): print(line, end="")
-      ret = proc.wait()
+      ret = os.system(f"cd {pathlib.Path(__file__).parents[2]}/extra/disassemblers/applegpu && python3 compiler_explorer.py {shader.name}")
      if ret: print("Disassembler Error: Make sure you have https://github.com/dougallj/applegpu cloned to tinygrad/extra/disassemblers/applegpu")

 class MetalProgram:
@@ -226,6 +223,6 @@ class MetalAllocator(LRUAllocator[MetalDevice]):
  def _as_buffer(self, src:MetalBuffer) -> memoryview:
    self.dev.synchronize()
    return to_mv(cast(int, msg("contents", objc_id)(src.buf).value), src.size + src.offset)[src.offset:]
-  def _copyin(self, dest:MetalBuffer, src:memoryview): self._cp_mv(self._as_buffer(dest), src, "TINY -> METAL")
-  def _copyout(self, dest:memoryview, src:MetalBuffer): self._cp_mv(dest, self._as_buffer(src), "METAL -> TINY")
+  def _copyin(self, dest:MetalBuffer, src:memoryview): self._cp_mv(self._as_buffer(dest), src, "CPU -> METAL")
+  def _copyout(self, dest:memoryview, src:MetalBuffer): self._cp_mv(dest, self._as_buffer(src), "METAL -> CPU")
  def _offset(self, buf:MetalBuffer, size:int, offset:int): return MetalBuffer(buf.buf, size, offset)
@@ -282,7 +282,7 @@ class NVAllocator(HCQAllocator['NVDevice']):
      self.dev.iface.free(opaque)
    except AttributeError: pass

-  def _map(self, buf:HCQBuffer): return self.dev.iface.map(buf._base if buf._base is not None else buf)
+  def _map(self, buf:HCQBuffer): self.dev.iface.map(buf._base if buf._base is not None else buf)

@dataclass
 class GPFifo:
@@ -382,14 +382,14 @@ class NVKIface:
    if made.params.status != 0: raise RuntimeError(f"_gpu_map_to_cpu returned {get_error_str(made.params.status)}")
    return fd_dev.mmap(target, size, mmap.PROT_READ|mmap.PROT_WRITE, mmap.MAP_SHARED | (MAP_FIXED if target is not None else 0), 0)

-  def alloc(self, size:int, host=False, uncached=False, cpu_access=False, contiguous=False, map_flags=0, cpu_addr=None) -> HCQBuffer:
+  def alloc(self, size:int, host=False, uncached=False, cpu_access=False, contiguous=False, map_flags=0) -> HCQBuffer:
    # Uncached memory is "system". Use huge pages only for gpu memory.
    page_size = (4 << (12 if OSX else 10)) if uncached or host else ((2 << 20) if size >= (8 << 20) else (4 << (12 if OSX else 10)))
    size = round_up(size, page_size)
    va_addr = self._alloc_gpu_vaddr(size, alignment=page_size, force_low=cpu_access)

    if host:
-      va_addr = cpu_addr or FileIOInterface.anon_mmap(va_addr, size, mmap.PROT_READ|mmap.PROT_WRITE, MAP_FIXED|mmap.MAP_SHARED|mmap.MAP_ANONYMOUS, 0)
+      va_addr = FileIOInterface.anon_mmap(va_addr, size, mmap.PROT_READ | mmap.PROT_WRITE, MAP_FIXED | mmap.MAP_SHARED | mmap.MAP_ANONYMOUS, 0)

      flags = (nv_gpu.NVOS02_FLAGS_PHYSICALITY_NONCONTIGUOUS << 4) | (nv_gpu.NVOS02_FLAGS_COHERENCY_CACHED << 12) \
            | (nv_gpu.NVOS02_FLAGS_MAPPING_NO_MAP << 30)
@@ -438,11 +438,7 @@ class NVKIface:
      hClient=self.root, hMemory=mem_handle, gpuAttributesCount=1, perGpuAttributes=attrs, mapped_gpu_ids=[self.gpu_uuid],
      has_cpu_mapping=has_cpu_mapping), view=MMIOInterface(va_base, size, fmt='B') if has_cpu_mapping else None, owner=self.dev)

-  def map(self, mem:HCQBuffer):
-    if mem.owner is not None and mem.owner._is_cpu():
-      if not any(x.device.startswith("NV") for x in mem.mapped_devs): return self.alloc(mem.size, host=True, cpu_addr=mem.va_addr)
-      mem = mem.mappings[next(x for x in mem.mapped_devs if x.device.startswith("NV"))]
-    self._gpu_uvm_map(mem.va_addr, mem.size, mem.meta.hMemory, create_range=False)
+  def map(self, mem:HCQBuffer): self._gpu_uvm_map(mem.va_addr, mem.size, mem.meta.hMemory, create_range=False)

  def _alloc_gpu_vaddr(self, size, alignment=(4 << 10), force_low=False):
    return NVKIface.low_uvm_vaddr_allocator.alloc(size, alignment) if force_low else NVKIface.uvm_vaddr_allocator.alloc(size, alignment)
@@ -40,7 +40,8 @@ class PythonProgram:
      loop_ends: dict[int, int] = {}
      while i < len(self.uops):
        uop, dtype, idp, arg = self.uops[i]
-        void_ops = {Ops.ENDRANGE, Ops.BARRIER, Ops.IF, Ops.ENDIF, Ops.SINK, Ops.NOOP, Ops.STORE}
+        void_ops = {Ops.ENDRANGE, Ops.BARRIER, Ops.IF, Ops.ENDIF, Ops.SINK}
+        if uop is Ops.DEFINE_REG: idp = [idp[0]]
        inp = [ul[v] for v in idp if self.uops[v][0] not in void_ops]
        dtp = [dl[v] for v in idp if self.uops[v][0] not in void_ops]
        if getenv("TRACE"): print(i, uop, dtype, arg, inp, dtp)
@@ -48,7 +49,7 @@ class PythonProgram:
          loop_ends[idp[0]] = i
          i = idp[0]
          continue
-        if uop in (Ops.BARRIER, Ops.IF, Ops.ENDIF, Ops.SINK, Ops.NOOP):
+        if uop in (Ops.BARRIER, Ops.IF, Ops.ENDIF, Ops.SINK):
          # in the python emulator, the warp is always in sync
          i += 1
          continue
@@ -58,6 +59,7 @@ class PythonProgram:
          for j,val in enumerate(inp[1] if dtp[1].count > 1 else [inp[1]]):
            for (m,o,g),v in zip(inp[0], val):
              if g: _store(m, o+j, v)
+          ul[i] = inp[0]
          i += 1
          continue
        if uop in {Ops.DEFINE_GLOBAL, Ops.DEFINE_LOCAL, Ops.DEFINE_REG}:
@@ -66,6 +68,8 @@ class PythonProgram:
          if uop is Ops.DEFINE_REG:
            # REGs are per thread
            ul[i] = [memoryview(bytearray(dtype.size*dtype.itemsize)).cast(dtype.fmt) for _ in range(warp_size)]
+            for buf, val in zip(ul[i], inp[0]):
+              for x in range(dtype.size): buf[x] = val
          else:
            buf = memoryview(bytearray(dtype.size*dtype.itemsize)) if uop is not Ops.DEFINE_GLOBAL else pbufs.pop(0)
            ul[i] = [buf.cast(dtype.fmt)] * warp_size
@@ -123,27 +127,24 @@ class PythonProgram:
                  out[elem_idx][goff+lane_id] += sum(a_elem(inp[0], _k, c_j, goff) * b_elem(inp[1], c_i, _k, goff) for _k in range(K))
            return out

-          first_src_dtype = self.uops[idp[0]][1]
-          assert isinstance(first_src_dtype, DType) # mypy
-          dims, dtype_in, device, threads = arg[1], first_src_dtype.scalar(), arg[4], arg[5]
          # TODO: refactor these to a shared TensorCoreLayout in kernel.py
-          if device == "METAL":
+          if arg[4] == "METAL":
            # A (2 elements on 32 threads): row major
            def a_b_elem(x, i, j, goff): return x[(i%2)][goff+(i//2)%2+(j%4)*2+(i//4)*8+(j//4)*16]
            # (i, j), C, D (2 elements on 32 threads): row major same as A/B
            def c_map(lane, elem): return (elem + ((lane%2)*2) + ((lane//8)%2)*4, ((lane//2)%4) + (lane//16)*4)
            ul[i] = wmma_helper(32, 8, 2, 2, 2, a_b_elem, a_b_elem, c_map)
-          elif device == "AMD" and threads == 64:
+          elif arg[4] == "AMD" and arg[5] == 64:
            def a_elem(x, k, row, goff): return x[k%4][goff + (k//4)*16 + row]
            def b_elem(x, col, k, goff): return a_elem(x, k, col, goff) # pylint: disable=arguments-out-of-order
            def c_map(lane, elem): return (lane%16, (lane//16)*4 + elem)
            ul[i] = wmma_helper(64, 16, 4, 4, 4, a_elem, b_elem, c_map)
-          elif device == "AMD" and len(inp[0]) == 8: # RDNA4
+          elif arg[4] == "AMD" and len(inp[0]) == 8: # RDNA4
            def a_elem(x, k, row, goff): return x[k - [0, 4, 4, 8][k//4]][goff + row + [0, 16, 0, 16][k//4]]
            def b_elem(x, col, k, goff): return a_elem(x, k, col, goff)
            def c_map(lane, elem): return (lane%16, (lane//16)*8 + elem)
            ul[i] = wmma_helper(32, 16, 8, 8, 8, a_elem, b_elem, c_map)
-          elif device == "AMD":
+          elif arg[4] == "AMD":
            # A (16 elements on 32 threads): col major, lane 16-32 == lane 0-15
            def a_elem(x, k, row, goff):
              assert x[k][goff+row] == x[k][goff+row+16], "warp elements not duplicated properly across lanes"
@@ -152,27 +153,27 @@ class PythonProgram:
            def b_elem(x, col, k, goff): return a_elem(x, k, col, goff)  # pylint: disable=arguments-out-of-order
            def c_map(lane, elem): return (lane%16, lane//16+elem*2) # (i, j), C, D (8 elements on 32 threads): row major
            ul[i] = wmma_helper(32, 16, 16, 16, 8, a_elem, b_elem, c_map)
-          elif device == "CUDA":
+          elif arg[4] == "CUDA":
            # (col, row) given (lane, elem) for C & D (4 elements on 32 threads); shared by all tc shapes with M=16 N=8
            def c_map(lane, elem): return (elem%2 + (lane%4)*2, lane//4 + (elem//2)*8)

-            if dims == (8,16,16):
+            if arg[1] == (8,16,16):
              def a_elem(x, k, row, goff): return x[k%2 + (row//8)*2 + (k//8)*4][goff + (k//2)%4 + (row%8)*4]
              def b_elem(x, col, k, goff): return x[k%2 + (k//8)*2][goff + (k//2)%4 + col*4]
              ul[i] = wmma_helper(32, 16, 8, 4, 4, a_elem, b_elem, c_map)

-            elif dims == (8,16,8) and dtype_in == dtypes.half:
+            elif arg[1] == (8,16,8) and arg[2] == dtypes.half:
              def a_elem(x, k, row, goff): return x[k%2 + (row//8)*2][goff + k//2 + (row%8)*4]
              def b_elem(x, col, k, goff): return x[k%2][goff + k//2 + col*4]
              ul[i] = wmma_helper(32, 8, 4, 2, 4, a_elem, b_elem, c_map)

-            elif dims == (8,16,8) and dtype_in == dtypes.float:
+            elif arg[1] == (8,16,8) and arg[2] == dtypes.float:
              def a_elem(x, k, row, goff): return x[(k//4)*2 + row//8][goff + k%4 + (row%8)*4]
              def b_elem(x, col, k, goff): return x[k//4][goff + k%4 + col*4]
              ul[i] = wmma_helper(32, 8, 4, 2, 4, a_elem, b_elem, c_map)

            else: raise NotImplementedError(f"unimplemented tensor core {arg}")
-          elif device == "INTEL":
+          elif arg[4] == "INTEL":
            # A (16 elements on 8 threads)
            def a_elem(x, k, row, goff): return x[k%2+row*2][goff+k//2]
            # B (16 elements on 8 threads)
@@ -180,7 +181,7 @@ class PythonProgram:
            # C, D (8 elements on 8 threads)
            def c_map(lane, elem): return (lane, elem)
            ul[i] = wmma_helper(8, 16, 16, 16, 8, a_elem, b_elem, c_map)
-          elif device == "CPU":
+          elif arg[4] == "CPU":
            def elem(x, col, row, _): return x[col+row][0] # k is always 0
            def c_map(_, elem): return (elem%16, elem//16)
            ul[i] = wmma_helper(1, 1, 16, 16, 256, elem, elem, c_map)
@@ -16,7 +16,6 @@ from tinygrad.helpers import getenv, DEBUG, fromimport, unwrap, LazySeq, Timing
 from tinygrad.engine.jit import GraphRunner, MultiGraphRunner, ExecItem, graph_class
 from tinygrad.engine.realize import CompiledRunner, BufferXfer
 from tinygrad.device import Compiled, Buffer, Allocator, Compiler, Device, BufferSpec
-from tinygrad.runtime.support.ib import IBCtx, IBConn, SGE

 # ***** API *****

@@ -36,7 +35,6 @@ class RemoteProperties:
  offset_supported: bool
  graph_supported: bool
  graph_supports_multi: bool
-  ib_gid: bytes|None

@dataclass(frozen=True)
 class GetProperties(RemoteRequest): pass
@@ -47,18 +45,12 @@ class Event(RemoteRequest): event_session: SessionKey; event: int # noqa: E702
@dataclass(frozen=True)
 class Wait(RemoteRequest): event: int

-@dataclass(frozen=True)
-class IBConnect(RemoteRequest): host: str; gid: bytes; qp_num: int # noqa: E702
-
@dataclass(frozen=True)
 class BufferAlloc(RemoteRequest): buffer_num: int; size: int; options: BufferSpec # noqa: E702

@dataclass(frozen=True)
 class BufferOffset(RemoteRequest): buffer_num: int; size: int; offset: int; sbuffer_num: int # noqa: E702

-@dataclass(frozen=True)
-class BufferIOVAS(RemoteRequest): buffer_nums: list[tuple[SessionKey, int]] # noqa: E702
-
@dataclass(frozen=True)
 class BufferFree(RemoteRequest): buffer_num: int # noqa: E702

@@ -119,9 +111,9 @@ class GraphExec(RemoteRequest):
  wait: bool

 # for safe deserialization
-eval_globals = {x.__name__:x for x in [SessionKey, SessionFree, RemoteProperties, GetProperties, Event, Wait, BufferAlloc, BufferOffset, BufferIOVAS,
-                                       BufferFree, CopyIn, CopyOut, Transfer, BatchTransfer, IBConnect, ProgramAlloc, ProgramFree, ProgramExec,
-                                       GraphComputeItem, GraphAlloc, GraphFree, GraphExec, BufferSpec, UOp, Ops, dtypes]}
+eval_globals = {x.__name__:x for x in [SessionKey, SessionFree, RemoteProperties, GetProperties, Event, Wait, BufferAlloc, BufferOffset, BufferFree,
+                                       CopyIn, CopyOut, Transfer, BatchTransfer, ProgramAlloc, ProgramFree, ProgramExec, GraphComputeItem, GraphAlloc,
+                                       GraphFree, GraphExec, BufferSpec, UOp, Ops, dtypes]}
 attribute_whitelist: dict[Any, set[str]] = {dtypes: {*DTYPES_DICT.keys(), 'imagef', 'imageh'}, Ops: {x.name for x in Ops}}
 eval_fxns = {ast.Constant: lambda x: x.value, ast.Tuple: lambda x: tuple(map(safe_eval, x.elts)), ast.List: lambda x: list(map(safe_eval, x.elts)),
  ast.Dict: lambda x: {safe_eval(k):safe_eval(v) for k,v in zip(x.keys, x.values)},
@@ -168,12 +160,6 @@ class RemoteHandler:
    self.base_device = base_device
    self.sessions: defaultdict[SessionKey, RemoteSession] = defaultdict(RemoteSession)

-    try: self.ib_ctx: IBCtx|None = IBCtx(getenv("IB_DEV", 0))
-    except (IndexError, AttributeError): self.ib_ctx = None
-    self.ib_lock = asyncio.Lock()
-    self.ib_conns: dict[str, IBConn|None] = {}
-    self.iova_cache: dict[tuple[SessionKey, int], tuple[int, int, int]] = {}
-
  async def __call__(self, reader:asyncio.StreamReader, writer:asyncio.StreamWriter):
    while (req_hdr:=(await reader.readline()).decode().strip()):
      req_method, req_path, _ = req_hdr.split(' ')
@@ -185,30 +171,6 @@ class RemoteHandler:
      res_status, res_body = await self.handle(req_method, req_path, req_body)
      writer.write(f"HTTP/1.1 {res_status.value} {res_status.phrase}\r\nContent-Length: {len(res_body)}\r\n\r\n".encode() + res_body)

-  async def ib_connect(self, ssession:SessionKey, dsession:SessionKey) -> IBConn|None:
-    if self.ib_ctx is None: return None
-    await self.ib_lock.acquire()
-    conn = RemoteConnection(dsession.host)
-    if dsession.host not in self.ib_conns:
-      props = safe_eval(ast.parse(conn.q(GetProperties(session=dsession), wait=True), mode="eval").body)
-      if props.ib_gid is not None:
-        self.ib_conns[dsession.host] = ib_conn = IBConn(self.ib_ctx)
-        ibxc_ret = conn.q(IBConnect(ssession.host, ib_conn.gid, ib_conn.qp_num, session=dsession), wait=True)
-        ib_conn.connect(*struct.unpack('<16sQ', ibxc_ret))
-      else:
-        self.ib_conns[dsession.host] = None
-    self.ib_lock.release()
-    return self.ib_conns[dsession.host]
-
-  async def get_iovas(self, bufs:list[tuple[SessionKey, int]]) -> list[tuple[int, int, int]]:
-    await self.ib_lock.acquire()
-    if (rbufs:=[buf for buf in bufs if buf not in self.iova_cache]):
-      conn = RemoteConnection(rbufs[0][0].host)
-      resp = await conn.aq(BufferIOVAS(rbufs, session=rbufs[0][0]), wait=True)
-      self.iova_cache.update({rbuf: struct.unpack('<QQQ', resp[i*24:(i+1)*24]) for i,rbuf in enumerate(rbufs)})
-    self.ib_lock.release()
-    return [self.iova_cache[buf] for buf in bufs]
-
  async def handle(self, method:str, path:str, body:bytes) -> tuple[http.HTTPStatus, bytes]:
    status, ret = http.HTTPStatus.OK, b""
    if path == "/batch" and method == "POST":
@@ -226,7 +188,6 @@ class RemoteHandler:
            rp = RemoteProperties(
              real_device=dev.device, renderer=(cls.__module__, cls.__name__, args), offset_supported=hasattr(dev.allocator, '_offset'),
              graph_supported=graph_cls is not None, graph_supports_multi=graph_cls is not None and issubclass(graph_cls, MultiGraphRunner),
-              ib_gid=bytes(self.ib_ctx.gid_attr.raw) if self.ib_ctx is not None else None,
            )
            ret = repr(rp).encode()
          case Event():
@@ -239,19 +200,9 @@ class RemoteHandler:
          case Wait():
            assert await session.events[c.event].wait()
            del session.events[c.event] # do not leak memory
-          case IBConnect():
-            self.ib_conns[c.host] = ibc = IBConn(unwrap(self.ib_ctx))
-            ibc.connect(c.gid, c.qp_num)
-            ret = struct.pack('<16sQ', ibc.gid, ibc.qp_num)
          case BufferAlloc():
            assert c.buffer_num not in session.buffers, f"buffer {c.buffer_num} already allocated"
            session.buffers[c.buffer_num] = Buffer(dev.device, c.size, dtypes.uint8, options=c.options, preallocate=True)
-          case BufferIOVAS():
-            rets = []
-            for buffer_session,buffer_num in c.buffer_nums:
-              iova, mr = unwrap(self.ib_ctx).reg(buf:=self.sessions[buffer_session].buffers[buffer_num])
-              rets.append(struct.pack("<QQQ", iova, mr.contents.rkey, buf.nbytes))
-            ret = b"".join(rets)
          case BufferOffset():
            assert c.buffer_num not in session.buffers, f"buffer {c.buffer_num} already exists"
            session.buffers[c.buffer_num] = session.buffers[c.sbuffer_num].view(c.size, dtypes.uint8, c.offset).allocate()
@@ -269,29 +220,16 @@ class RemoteHandler:
                sbuf.copyout(data:=memoryview(bytearray(sbuf.nbytes)))
                dbuf.copyin(data)
            else:
-              conn, ib_conn = RemoteConnection(c.dsession.host), await self.ib_connect(unwrap(c.session), c.dsession)
+              conn = RemoteConnection(c.dsession.host)
              sbuf = session.buffers[c.buffer_num]
-              if ib_conn is not None:
-                src_iova, src_mr = unwrap(self.ib_ctx).reg(sbuf)
-                dst_iova, dst_key, dst_size = (await self.get_iovas([(c.dsession, c.dbuffer_num)]))[0]
-                assert sbuf.nbytes == dst_size, f"{sbuf.nbytes} != {dst_size}"
-                for d in Device._opened_devices: Device[d].synchronize()
-                ib_conn.rdma_write([SGE(dst_iova, dst_key, src_iova, src_mr.contents.lkey, dst_size)])
-              else:
-                sbuf.copyout(data:=memoryview(bytearray(sbuf.nbytes)))
-                await conn.aq(CopyIn(c.dbuffer_num, conn.req.h(data), session=c.dsession), wait=True)
+              sbuf.copyout(data:=memoryview(bytearray(sbuf.nbytes)))
+              conn.q(CopyIn(c.dbuffer_num, conn.req.h(data), session=c.dsession), wait=True)
          case BatchTransfer():
-            conn, ib_conn = RemoteConnection(c.dbuffer_nums[0][0].host), await self.ib_connect(c.sbuffer_nums[0][0], c.dbuffer_nums[0][0])
-            if ib_conn is not None:
-              sbufs = [unwrap(self.ib_ctx).reg(self.sessions[s].buffers[bi]) for s,bi in c.sbuffer_nums]
-              dbufs = await self.get_iovas(c.dbuffer_nums)
-              for d in Device._opened_devices: Device[d].synchronize()
-              ib_conn.rdma_write([SGE(di, dk, si, sm.contents.lkey, ds) for (di,dk,ds),(si,sm) in zip(dbufs, sbufs)])
-            else:
-              for (sbuf_session,sbuf_num),(dbuf_session,dbuf_num) in zip(c.sbuffer_nums, c.dbuffer_nums):
-                sbuf = self.sessions[sbuf_session].buffers[sbuf_num]
-                sbuf.copyout(data:=memoryview(bytearray(sbuf.nbytes)))
-                await conn.aq(CopyIn(dbuf_num, conn.req.h(data), session=dbuf_session), wait=True)
+            conn = RemoteConnection(c.dbuffer_nums[0][0].host)
+            for (sbuf_session,sbuf_num),(dbuf_session,dbuf_num) in zip(c.sbuffer_nums, c.dbuffer_nums):
+              sbuf = self.sessions[sbuf_session].buffers[sbuf_num]
+              sbuf.copyout(data:=memoryview(bytearray(sbuf.nbytes)))
+              await conn.aq(CopyIn(dbuf_num, conn.req.h(data), session=dbuf_session), wait=True)
          case ProgramAlloc():
            lib = dev.compiler.compile_cached(req._h[c.datahash].decode())
            session.programs[(c.name, c.datahash)] = dev.runtime(c.name, lib)
@@ -1,8 +1,6 @@
 from __future__ import annotations
 from typing import cast, Callable, Type, TypeVar, Generic, Any
 import contextlib, decimal, statistics, time, ctypes, array, os, struct, traceback, collections
-try: import fcntl # windows misses that
-except ImportError: fcntl = None #type:ignore[assignment]
 from tinygrad.helpers import PROFILE, getenv, to_mv, round_up, ProfileRangeEvent
 from tinygrad.renderer import Renderer
 from tinygrad.device import BufferSpec, Compiler, Compiled, LRUAllocator, ProfileDeviceEvent, ProfileProgramEvent
@@ -27,7 +25,9 @@ class FileIOInterface:
    self.fd:int = fd or os.open(path, flags)
  def __del__(self):
    if hasattr(self, 'fd'): os.close(self.fd)
-  def ioctl(self, request, arg): return fcntl.ioctl(self.fd, request, arg)
+  def ioctl(self, request, arg):
+    import fcntl # to support windows
+    return fcntl.ioctl(self.fd, request, arg)
  def mmap(self, start, sz, prot, flags, offset):
    x = libc.mmap(start, sz, prot, flags, self.fd, offset)
    if x == 0xffffffffffffffff: raise OSError(f"Failed to mmap {sz} bytes at {hex(start)}: {os.strerror(ctypes.get_errno())}")
@@ -406,8 +406,6 @@ class HCQCompiled(Compiled, Generic[SignalType]):
    return self.signal_t(base_buf=HCQCompiled.signal_pool[pg].pop(), owner=self, **kwargs)

  def _at_profile_finalize(self):
-    self.synchronize() # Expect device to be synchronizes
-
    def _sync(d:HCQCompiled, q_t:Callable[[], HWQueue]):
      q_t().timestamp(d.timeline_signal).signal(d.timeline_signal, d.next_timeline()).submit(d)
      st = time.perf_counter_ns()
@@ -439,8 +437,6 @@ class HCQCompiled(Compiled, Generic[SignalType]):
      except Exception: errs += f"\n{iface_t.__name__}: {traceback.format_exc()}"
    raise RuntimeError(f"Cannot find a usable interface for {type(self).__name__[:-6]}:{self.device_id}:\n{errs}")

-  def _is_cpu(self) -> bool: return hasattr(self, 'device') and self.device.split(":")[0] in ("CPU", "LLVM")
-
  def finalize(self):
    try: self.synchronize() # Try to finalize device in any case.
    except RuntimeError as e: print(f"{self.device} synchronization failed before finalizing: {e}")
@@ -452,8 +448,7 @@ class HCQBuffer:
  def __init__(self, va_addr:sint, size:int, texture_info:Any=None, meta:Any=None, _base:HCQBuffer|None=None, view:MMIOInterface|None=None,
               owner:HCQCompiled|None=None):
    self.va_addr, self.size, self.texture_info, self.meta, self._base, self.view = va_addr, size, texture_info, meta, _base, view
-    self._devs, self.owner = ([owner] if owner is not None else []), owner
-    self._mappings:dict[HCQCompiled, HCQBuffer] = {} # mapping to the other devices
+    self.devs, self.owner = ([owner] if owner is not None else []), owner

  def offset(self, offset:int=0, size:int|None=None) -> HCQBuffer:
    return HCQBuffer(self.va_addr+offset, size or (self.size - offset), owner=self.owner, texture_info=self.texture_info, meta=self.meta,
@@ -464,10 +459,7 @@ class HCQBuffer:
    return self.view

  @property
-  def mappings(self): return self._mappings if self._base is None else self._base._mappings
-
-  @property
-  def mapped_devs(self): return self._devs if self._base is None else self._base._devs
+  def mapped_devs(self): return self.devs if self._base is None else self._base.devs

 class HCQAllocatorBase(LRUAllocator[HCQDeviceType], Generic[HCQDeviceType]):
  """
@@ -485,10 +477,7 @@ class HCQAllocatorBase(LRUAllocator[HCQDeviceType], Generic[HCQDeviceType]):
    if self.dev in buf.mapped_devs: return
    if buf.owner is None: raise RuntimeError(f"map failed: buffer {buf.va_addr} has no owner, it's a virtual buffer")
    if not hasattr(self, '_map'): raise NotImplementedError("map failed: no method implemented")
-
-    # Since it's unified memory space, any buffer mapping is valid for all devices after successful map.
-    # Devices can save mappings and internal metadata as a new buffer.
-    if (mb:=self._map(buf)) is not None: buf.mappings[self.dev] = mb
+    self._map(buf)
    buf.mapped_devs.append(self.dev)

  def _offset(self, buf, size:int, offset:int) -> HCQBuffer: return buf.offset(offset=offset, size=size)
@@ -496,7 +485,7 @@ class HCQAllocatorBase(LRUAllocator[HCQDeviceType], Generic[HCQDeviceType]):
 class HCQAllocator(HCQAllocatorBase, Generic[HCQDeviceType]):
  def _copyin(self, dest:HCQBuffer, src:memoryview):
    assert self.dev.hw_copy_queue_t is not None
-    with hcq_profile(self.dev, queue_type=self.dev.hw_copy_queue_t, desc=f"TINY -> {self.dev.device}", enabled=PROFILE):
+    with hcq_profile(self.dev, queue_type=self.dev.hw_copy_queue_t, desc=f"CPU -> {self.dev.device}", enabled=PROFILE):
      for i in range(0, src.nbytes, self.b[0].size):
        self.b_next = (self.b_next + 1) % len(self.b)
        self.dev.timeline_signal.wait(self.b_timeline[self.b_next])
@@ -528,7 +517,7 @@ class HCQAllocator(HCQAllocatorBase, Generic[HCQDeviceType]):
    self.dev.synchronize()

    assert self.dev.hw_copy_queue_t is not None
-    with hcq_profile(self.dev, queue_type=self.dev.hw_copy_queue_t, desc=f"{self.dev.device} -> TINY", enabled=PROFILE):
+    with hcq_profile(self.dev, queue_type=self.dev.hw_copy_queue_t, desc=f"{self.dev.device} -> CPU", enabled=PROFILE):
      for i in range(0, dest.nbytes, cp_size:=(self.max_copyout_size or self.b[0].size)):
        self.dev.hw_copy_queue_t().wait(self.dev.timeline_signal, self.dev.timeline_value - 1) \
                                  .copy(self.b[0].va_addr, src.va_addr+i, lsize:=min(cp_size, dest.nbytes-i)) \
@@ -1,172 +0,0 @@
-from __future__ import annotations
-import resource, ctypes, weakref, functools, itertools, tinygrad.runtime.autogen.ib as ib
-from typing import Iterator
-from dataclasses import dataclass
-from weakref import WeakKeyDictionary
-from tinygrad.device import Buffer, DMACPURef, DMAFdRef
-from tinygrad.helpers import getenv, round_up, DEBUG
-
-DEFAULT_PORT, DEFAULT_GID = getenv("DEFAULT_PORT", 1), getenv("DEFAULT_GID", 3) # DEFAULT_GID=0 for RXE
-IOVA_ALIGN = resource.getpagesize()
-
-def checkz(x, ret=None):
-  assert x == 0, f'{x} != 0 (errno {ctypes.get_errno()})'
-  return ret
-
-@dataclass(frozen=True)
-class SGE:
-  dst_iova: int
-  dst_key: int
-  src_iova: int
-  src_key: int
-  size: int
-
-class IBCtx:
-  def __init__(self, idx:int):
-    # Open the device (aka Host Channel Adapter in ib-speak)
-    devs = ib.ibv_get_device_list(ctypes.byref(ndevs:=ctypes.c_int32()))
-    if idx >= ndevs.value: raise IndexError(f"{idx} > {ndevs.value}")
-    self.ctx = ib.ibv_open_device(devs[idx])
-    ib.ibv_free_device_list(devs)
-
-    # HACK: remove this (and all usage of `ctx.contents.ops`) when clang2py can deal with `static inline` wrapper-functions
-    self.vctx = ctypes.cast(ctypes.addressof(self.ctx.contents) - ib.struct_verbs_context.context.offset, ctypes.POINTER(ib.struct_verbs_context))
-
-    # Get attributes. Something like port_attr.max_msg_sz sound like it might requre taking the min of host's and remote's attributes if they differ
-    self.device_attr = checkz(ib.ibv_query_device(self.ctx, ctypes.byref(da:=ib.struct_ibv_device_attr())), da)
-    self.port_attr = checkz(self.vctx.contents.query_port(self.ctx, DEFAULT_PORT, ctypes.byref(pa:=ib.struct_ibv_port_attr()), ctypes.sizeof(pa)), pa)
-    self.gid_attr = checkz(ib.ibv_query_gid(self.ctx, DEFAULT_PORT, DEFAULT_GID, ctypes.byref(ga:=ib.union_ibv_gid())), ga)
-
-    # Allocate protection domain
-    self.pd = ib.ibv_alloc_pd(self.ctx)
-    self.next_iova: int = IOVA_ALIGN # don't start at zero (nullptr)
-
-    # weakref(buf) => (iova, mr, mr_dealloc). mr_dealloc is kept here to avoid double freeing mrs that are deallocated in __del__
-    self.mrs: WeakKeyDictionary[Buffer, tuple[int, ctypes._Pointer[ib.struct_ibv_mr], weakref.finalize]] = WeakKeyDictionary()
-
-    # Default soft fd limit is 1024, which is not enough, set soft to hard (maximum allowed by the os)
-    IBCtx.rlimit_fix()
-
-  def __del__(self):
-    # must deallocate all mrs in protection domain before deallocating the protection domain
-    if hasattr(self, "mrs"): [fin() for _,_,fin in self.mrs.values()]
-    if hasattr(self, "pd"): ib.ibv_dealloc_pd(self.pd)
-    if hasattr(self, "ctx"): ib.ibv_close_device(self.ctx)
-
-  @functools.cache # run once
-  @staticmethod
-  def rlimit_fix():
-    soft, hard = resource.getrlimit(resource.RLIMIT_NOFILE)
-    resource.setrlimit(resource.RLIMIT_NOFILE, (hard, hard))
-    if DEBUG>=2: print(f"IB: Increased fd limit from {soft} to {hard}")
-
-  def alloc_iova(self, size:int, required_offset:int):
-    iova = round_up(self.next_iova - required_offset, IOVA_ALIGN) + required_offset
-    self.next_iova = iova + size
-    return iova
-
-  def reg(self, buf:Buffer) -> tuple[int, ctypes._Pointer[ib.struct_ibv_mr]]:
-    buf = buf.base
-    if buf not in self.mrs:
-      if buf.nbytes > self.device_attr.max_mr_size: raise RuntimeError(f"Buffer too big: {buf.nbytes:#x} > {self.device_attr.max_mr_size:#x}")
-      if len(self.mrs) >= self.device_attr.max_mr: raise RuntimeError(f"Out of memory region cap: {len(self.mrs)} >= {self.device_attr.max_mr}")
-      # Local read is implied (but still have to create the memory region, except for short sends/writes with IBV_SEND_INLINE that are inlined by cpu)
-      mr_flags = ib.IBV_ACCESS_LOCAL_WRITE | ib.IBV_ACCESS_REMOTE_READ | ib.IBV_ACCESS_REMOTE_WRITE
-      match (dmaref:=buf.as_dmaref()):
-        case DMACPURef():
-          iova = self.alloc_iova(dmaref.size, dmaref.addr % IOVA_ALIGN)
-          mr = ib.ibv_reg_mr_iova2(self.pd, ctypes.c_void_p(dmaref.addr), dmaref.size, iova, mr_flags)
-        case DMAFdRef():
-          iova = self.alloc_iova(dmaref.size, dmaref.offset % IOVA_ALIGN)
-          mr = ib.ibv_reg_dmabuf_mr(self.pd, dmaref.offset, dmaref.size, iova, dmaref.fd, mr_flags)
-        case _: raise RuntimeError(f"Unknown type of dma ref: {dmaref}")
-      if not mr: raise RuntimeError(f"Couldn't register memory region for {buf} {dmaref} (errno={ctypes.get_errno()})")
-      self.mrs[buf] = (iova, mr, weakref.finalize(buf, ib.ibv_dereg_mr, mr))
-    return self.mrs[buf][0:2]
-
-class IBConn:
-  def __init__(self, ctx:IBCtx):
-    self.ctx = ctx
-
-    # Create Completion Channel. It is a file descriptor that kernel sends notifications through, not a thing in infiniband spec, just linux-ism
-    self.comp_channel = ib.ibv_create_comp_channel(self.ctx.ctx)
-    # Create Completion Queue. When a Work Request with signaled flag is completed a Completion Queue Entry is pushed onto this queue
-    self.cq = ib.ibv_create_cq(self.ctx.ctx, _capacity:=256, _cq_context:=None, self.comp_channel, _comp_vector:=0)
-    self.pending_wrids: set[int] = set()
-    self.wrid_num: Iterator[int] = itertools.count(0) # wc_id is uint64, this will never overflow
-
-    # Create Queue Pair. It's the closest thing to a socket in infiniband with QP num being the closest thing to a port, except it's allocated by hca
-    qp_init_attrs_cap = ib.struct_ibv_qp_cap(max_send_wr=1024, max_recv_wr=64, max_send_sge=8, max_recv_sge=8, max_inline_data=64)
-    qp_init_attrs = ib.struct_ibv_qp_init_attr(send_cq=self.cq, recv_cq=self.cq, cap=qp_init_attrs_cap, qp_type=ib.IBV_QPT_RC) # Reliable Connection
-    self.qp = ib.ibv_create_qp(self.ctx.pd, ctypes.byref(qp_init_attrs))
-    self.qp_cap = qp_init_attrs.cap
-
-    # The most important thing about QPs is their state, when a new QP is created it's in the RESET state, before it can be properly used it has to go
-    # through Init, Ready To Receive, Ready To Send. A good docs on QP state machine: https://www.rdmamojo.com/2012/05/05/qp-state-machine/
-
-    # INIT
-    qp_access_flags = ib.IBV_ACCESS_REMOTE_WRITE | ib.IBV_ACCESS_REMOTE_READ
-    qpa = ib.struct_ibv_qp_attr(qp_state=ib.IBV_QPS_INIT, port_num=DEFAULT_PORT, qp_access_flags=qp_access_flags)
-    checkz(ib.ibv_modify_qp(self.qp, qpa, ib.IBV_QP_STATE | ib.IBV_QP_PORT | ib.IBV_QP_ACCESS_FLAGS | ib.IBV_QP_PKEY_INDEX))
-
-    self.gid, self.qp_num = bytes(self.ctx.gid_attr.raw), self.qp.contents.qp_num
-
-  # Exchange GID and QP num with remote. At least in RoCEv2 gid can be guessed from remote's ip, QP num can't.
-
-  def connect(self, remote_gid:bytes, remote_qp_num:int):
-    # RTR
-    qp_ah_attr_grh = ib.struct_ibv_global_route(hop_limit=1, dgid=ib.union_ibv_gid(raw=(ctypes.c_ubyte * 16)(*remote_gid)), sgid_index=DEFAULT_GID)
-    qp_ah_attr = ib.struct_ibv_ah_attr(is_global=1, port_num=DEFAULT_PORT, grh=qp_ah_attr_grh)
-    qpa = ib.struct_ibv_qp_attr(qp_state=ib.IBV_QPS_RTR, path_mtu=ib.IBV_MTU_4096, dest_qp_num=remote_qp_num, rq_psn=0, max_dest_rd_atomic=1,
-                                min_rnr_timer=12, ah_attr=qp_ah_attr)
-    checkz(ib.ibv_modify_qp(self.qp, qpa, ib.IBV_QP_STATE | ib.IBV_QP_PATH_MTU | ib.IBV_QP_DEST_QPN | ib.IBV_QP_RQ_PSN | \
-                                          ib.IBV_QP_MAX_DEST_RD_ATOMIC | ib.IBV_QP_MIN_RNR_TIMER | ib.IBV_QP_AV))
-
-    # RTS
-    qpa = ib.struct_ibv_qp_attr(qp_state=ib.IBV_QPS_RTS, timeout=14, retry_cnt=7, rnr_retry=7, sq_psn=0, max_rd_atomic=1)
-    checkz(ib.ibv_modify_qp(self.qp, qpa, ib.IBV_QP_STATE | ib.IBV_QP_TIMEOUT | ib.IBV_QP_RETRY_CNT | ib.IBV_QP_RNR_RETRY | ib.IBV_QP_SQ_PSN | \
-                                          ib.IBV_QP_MAX_QP_RD_ATOMIC))
-
-  def __del__(self):
-    self.wait_cq() # need to wait for **everything** to complete before it's safe to dealloc queues and stuff
-    ib.ibv_destroy_qp(self.qp)
-    ib.ibv_destroy_cq(self.cq)
-    ib.ibv_destroy_comp_channel(self.comp_channel)
-
-  def next_wrid(self):
-    self.pending_wrids.add(wrid:=next(self.wrid_num))
-    return wrid
-
-  def wait_cq(self, wr_id: int|None=None):
-    while (wr_id in self.pending_wrids) if wr_id is not None else self.pending_wrids:
-      if self.ctx.ctx.contents.ops.poll_cq(self.cq, _num_entries:=1, ctypes.byref(wc:=ib.struct_ibv_wc())):
-        if wc.status != ib.IBV_WC_SUCCESS:
-          raise RuntimeError(f'Work Request completed with error: wr_id={wc.wr_id} status={ib.ibv_wc_status__enumvalues.get(wc.status, wc.status)}')
-        self.pending_wrids.remove(wc.wr_id)
-
-  def rdma_write(self, sgl:list[SGE]):
-    swr: ctypes._Pointer[ib.struct_ibv_send_wr]|None = None
-    swr_cnt, wr_id = 0, self.next_wrid()
-    def _post():
-      nonlocal swr, swr_cnt, wr_id
-      if swr is not None:
-        # The swr can be freed when this returns, the memory that sge points to can be unmapped after work completion is retrieved from cq
-        checkz(self.ctx.ctx.contents.ops.post_send(self.qp, swr, ctypes.byref(_bad_wr:=ctypes.POINTER(ib.struct_ibv_send_wr)())))
-        # TODO: async
-        self.wait_cq(wr_id)
-        swr, swr_cnt, wr_id = None, 0, self.next_wrid()
-    # Everything is in reverse for elegant chaining
-    for sg in reversed(sgl):
-      # Message size limit (max 2GB per ib spec, 1GB on tinybox mellanoxes) applies to both scatter-gather entries and entire wrs
-      for off in reversed(range(0, sg.size, self.ctx.port_attr.max_msg_sz)):
-        # Scatter-Gather Entry for local memory
-        sge = ctypes.pointer(ib.struct_ibv_sge(addr=sg.src_iova+off, length=min(sg.size-off, self.ctx.port_attr.max_msg_sz), lkey=sg.src_key))
-        # RDMA struct for remote memory
-        wr = ib.union_ibv_send_wr_wr(rdma=ib.struct_ibv_send_wr_1_rdma(remote_addr=sg.dst_iova+off, rkey=sg.dst_key))
-        # Signal (with chosen work request id) if it's the last wr (first in the loop since it's reversed)
-        wid, flags = (wr_id, ib.IBV_SEND_SIGNALED) if swr is None else (0, 0)
-        # Create Send Request
-        swr = ctypes.pointer(ib.struct_ibv_send_wr(opcode=ib.IBV_WR_RDMA_WRITE, sg_list=sge, num_sge=1, wr=wr, wr_id=wid, send_flags=flags, next=swr))
-        # Flush if queue is being overrun
-        if (swr_cnt:=swr_cnt + 1) >= self.qp_cap.max_send_wr: _post()
-    _post()
@@ -12,20 +12,16 @@ class _System:

  def memory_barrier(self): lib.atomic_thread_fence(__ATOMIC_SEQ_CST:=5) if (lib:=self.atomic_lib()) is not None else None

-  def lock_memory(self, addr:int, size:int):
-    if libc.mlock(ctypes.c_void_p(addr), size): raise RuntimeError(f"Failed to lock memory at {addr:#x} with size {size:#x}")
-
-  def system_paddrs(self, vaddr:int, size:int) -> list[int]:
-    self.pagemap().seek(vaddr // mmap.PAGESIZE * 8)
-    return [(x & ((1<<55) - 1)) * mmap.PAGESIZE for x in array.array('Q', self.pagemap().read(size//mmap.PAGESIZE*8, binary=True))]
-
  def alloc_sysmem(self, size:int, vaddr:int=0, contiguous:bool=False, data:bytes|None=None) -> tuple[int, list[int]]:
    assert not contiguous or size <= (2 << 20), "Contiguous allocation is only supported for sizes up to 2MB"
    flags = (libc.MAP_HUGETLB if contiguous and (size:=round_up(size, mmap.PAGESIZE)) > 0x1000 else 0) | (MAP_FIXED if vaddr else 0)
    va = FileIOInterface.anon_mmap(vaddr, size, mmap.PROT_READ|mmap.PROT_WRITE, mmap.MAP_SHARED|mmap.MAP_ANONYMOUS|MAP_POPULATE|MAP_LOCKED|flags, 0)

    if data is not None: to_mv(va, len(data))[:] = data
-    return va, self.system_paddrs(va, size)
+
+    # Read pagemap to get the physical address of each page. The pages are locked.
+    self.pagemap().seek(va // mmap.PAGESIZE * 8)
+    return va, [(x & ((1<<55) - 1)) * mmap.PAGESIZE for x in array.array('Q', self.pagemap().read(size//mmap.PAGESIZE*8, binary=True))]

  def pci_reset(self, gpu): os.system(f"sudo sh -c 'echo 1 > /sys/bus/pci/devices/{gpu}/reset'")
  def pci_scan_bus(self, target_vendor:int, target_devices:list[int]) -> list[str]:
@@ -159,12 +155,6 @@ class PCIIfaceBase:
    if b.owner == self.dev and b.meta.has_cpu_mapping: FileIOInterface.munmap(b.va_addr, b.size)

  def map(self, b:HCQBuffer):
-    if b.owner is not None and b.owner._is_cpu():
-      System.lock_memory(cast(int, b.va_addr), b.size)
-      paddrs, snooped, uncached = [(x, 0x1000) for x in System.system_paddrs(cast(int, b.va_addr), round_up(b.size, 0x1000))], True, False
-    elif (ifa:=getattr(b.owner, "iface", None)) is not None and isinstance(ifa, PCIIfaceBase):
-      paddrs = [(paddr if b.meta.mapping.system else (paddr + ifa.p2p_base_addr), size) for paddr,size in b.meta.mapping.paddrs]
-      snooped, uncached = b.meta.mapping.snooped, b.meta.mapping.uncached
-    else: raise RuntimeError(f"map failed: {b.owner} -> {self.dev}")
-
-    self.dev_impl.mm.map_range(cast(int, b.va_addr), round_up(b.size, 0x1000), paddrs, system=True, snooped=snooped, uncached=uncached)
+    if (ifa:=getattr(b.owner, "iface", None)) is None or not isinstance(ifa, PCIIfaceBase): raise RuntimeError(f"map failed: {b.owner} -> {self.dev}")
+    paddrs = [(paddr if b.meta.mapping.system else (paddr + ifa.p2p_base_addr), size) for paddr,size in b.meta.mapping.paddrs]
+    self.dev_impl.mm.map_range(cast(int, b.va_addr), b.size, paddrs, system=True, snooped=b.meta.mapping.snooped, uncached=b.meta.mapping.uncached)
@@ -4,7 +4,7 @@ from tinygrad.uop.ops import track_rewrites, _substitute
 from tinygrad.uop.spec import type_verify, tensor_uop_spec
 from tinygrad.uop.symbolic import symbolic_simple
 from tinygrad.helpers import Metadata, all_int, all_same, colored, prod, dedup, unwrap, getenv, pluralize, FUSE_ARANGE, DEBUG, SPLIT_REDUCEOP
-from tinygrad.dtype import ImageDType, dtypes
+from tinygrad.dtype import ImageDType
 from tinygrad.schedule.multi import multi_pm
 from tinygrad.shape.shapetracker import ShapeTracker
 from tinygrad.shape.view import View, strides_for_shape, get_contraction_with_reduce
@@ -188,7 +188,7 @@ def reduce_push_add_ones(src:UOp, r:UOp, view:UOp):

 view_left = merge_views+PatternMatcher([
  # view before elementwise and buffer ops
-  (UPat(Ops.VIEW, src=(UPat({*GroupOp.ALU, Ops.CAST, Ops.BITCAST, Ops.BIND, Ops.LOAD, Ops.STORE, Ops.VALID, Ops.SINK}, name="e"),), name="view"),
+  (UPat(Ops.VIEW, src=(UPat({*GroupOp.ALU, Ops.CAST, Ops.BITCAST, Ops.BIND, Ops.LOAD, Ops.STORE, Ops.VALID}, name="e"),), name="view"),
   lambda e,view: e.replace(src=tuple(s.view(view.st) for s in e.src))),
  # if there's ones added after reduce, put this before the reduce
  (UPat(Ops.VIEW, src=(UPat(Ops.REDUCE_AXIS, src=(UPat.var("src"),), name="r"),), name="view"), reduce_push_add_ones),
@@ -258,8 +258,7 @@ add_buffer_ops = PatternMatcher([
  # passthrough ASSIGN
  (UPat(Ops.ASSIGN, name="x"), lambda x: x.src[1]),
  # VALID
-  (UPat(Ops.VIEW, src=(UPat.cvar(),), name="self"),
-   lambda self: UOp.where(UOp(Ops.VALID, dtypes.bool, (UOp(Ops.VIEW, arg=self.st),)), self.const_like(self.base.arg), 0)),
+  (UPat(Ops.VIEW, src=(UPat.cvar(),), name="self"), UOp.valid),
 ])

 def check_load_st(glbl:UOp, view:UOp):
@@ -4,7 +4,7 @@ from dataclasses import dataclass
 import functools
 from typing import Callable
 from tinygrad.helpers import merge_dicts, getenv
-from tinygrad.shape.view import View, unravel
+from tinygrad.shape.view import View, strides_for_shape, unravel
 from tinygrad.dtype import dtypes
 from tinygrad.uop.ops import UOp, Ops, graph_rewrite, Variable, sint, sint_to_uop, Context, PatternMatcher, UPat, GroupOp
 from tinygrad.uop.symbolic import split_uop, symbolic_flat, uop_given_valid, simplify_valid
@@ -75,6 +75,9 @@ class ShapeTracker:
  @property
  def contiguous(self) -> bool: return len(self.views) == 1 and self.views[0].contiguous

+  @property
+  def consecutive(self) -> bool: return len(self.views) == 1 and (v:=self.views[0]).mask is None and v.strides == strides_for_shape(v.shape)
+
  @property
  def shape(self) -> tuple[sint, ...]: return self.views[-1].shape

@@ -83,6 +86,7 @@ class ShapeTracker:

  def reduce(self, axis:tuple[int, ...]) -> tuple[sint, ...]: return tuple(1 if i in axis else s for i,s in enumerate(self.shape))

+  def to_uop(self) -> UOp: return UOp(Ops.VIEW, dtypes.void, (), self)
  def to_indexed_uops(self, _idxs:list[UOp]|tuple[UOp, ...]|None=None) -> tuple[UOp, UOp]:
    return views_to_indexed_uops(self.views, tuple(_idxs) if _idxs is not None else None)

@@ -1976,14 +1976,12 @@ class Tensor(MathTrait):

    # https://keccak.team/keccak_specs_summary.html

-    def ctensor(l: Sequence[ConstType], dtype: DType = dtypes.uint64):
-      # TODO: contiguous is here for compile speed
-      return Tensor.stack(*(Tensor(v, dtype=dtype, device=self.device) for v in l)).contiguous()
+    def ctensor(l: Sequence[ConstType], dtype: DType = dtypes.uint64): return Tensor.stack(*(Tensor(v, dtype=dtype, device=self.device) for v in l))
    rot_offsets = [44, 43, 21, 14, 28, 20, 3, 45, 61, 1, 6, 25, 8, 18, 27, 36, 10, 15, 56, 62, 55, 39, 41, 2]
    rot_offsets_v0, rot_offsets_v1 =  ctensor([0] + [1 << v for v in rot_offsets]), ctensor([1] + [1 << (64 - v) for v in rot_offsets])

    # calculated from π step
-    reorder_indexes = ctensor([0,6,12,18,24,3,9,10,16,22,1,7,13,19,20,4,5,11,17,23,2,8,14,15,21], dtype=dtypes.int32)
+    reorder_indexes = ctensor([0,6,12,18,24,3,9,10,16,22,1,7,13,19,20,4,5,11,17,23,2,8,14,15,21])
    rnd_const_masks = [ctensor([v]).pad((0, 24)) for v in (1, 0x8082, 0x800000000000808a, 0x8000000080008000, 0x808b, 0x80000001, 0x8000000080008081,
    0x8000000000008009, 0x8a, 0x88, 0x80008009, 0x8000000a, 0x8000808b, 0x800000000000008b, 0x8000000000008089, 0x8000000000008003,
    0x8000000000008002, 0x8000000000000080, 0x800a, 0x800000008000000a, 0x8000000080008081, 0x8000000000008080, 0x80000001, 0x8000000080008008)]
@@ -1994,9 +1992,9 @@ class Tensor(MathTrait):
    data = data.pad((None, (0, data_pad))).reshape(bs := data.shape[0], -1, rate).pad((None, None, (0, 200 - rate)))

    # create pad mask
-    lbe = prod(data.shape[1:]) + rate - data_pad - 200
-    if data_pad == 1: mb = [(lbe, 0), (1, dsbyte ^ 0x80), (200 - rate, 0)]
-    else: mb = [(lbe, 0), (1, dsbyte), (data_pad - 2, 0), (1, 0x80), (200 - rate, 0)]
+    lbe = (blen := prod(data.shape[1:])) + rate - data_pad - 200
+    if data_pad == 1: mb = [(lbe, 0), (1, dsbyte ^ 0x80), (blen - lbe - 1, 0)]
+    else: mb = [(lbe, 0), (1, dsbyte), (blen + rate - lbe - 202, 0), (1, 0x80), (200 - rate, 0)]
    pad_mask = Tensor.cat(*(Tensor(v, dtype=dtypes.uint8, device=data.device).expand(l) for l, v in mb if l > 0)).unsqueeze(0)

    data = (data.flatten(1) ^ pad_mask).reshape(*data.shape[:2], 200).bitcast(dtypes.uint64)
@@ -2015,42 +2013,8 @@ class Tensor(MathTrait):
        # χ and ι step
        state = state.bitwise_xor(~state.roll(shifts=-1, dims=2) & state.roll(shifts=-2, dims=2))
        state = state.flatten(1) ^ rnd_const_masks[i]
-      # NOTE: kernelize here to prevent internal stack from growing propotional to data size
-      state = state.kernelize()
    return state.bitcast(dtypes.uint8)[:,:(obytes:=(200 - rate) // 2)].reshape(*self.shape[:-1], obytes)

-  def _hash_1mb(self) -> Tensor:
-    assert self.dtype == dtypes.uint8, "only support uint8 tensors for hashing"
-    assert self.ndim == 2, "only support batched 1d tensors"
-    assert self.shape[1] == 1024 * 1024, "only support messages of 1mb"
-
-    blocks = self.shape[0] * self.shape[1] // 4096
-    data = self.reshape(blocks, 4096)
-    block_hashes = data.keccak("shake_128").reshape(self.shape[0], 4096)
-    return block_hashes.keccak("shake_128").reshape(self.shape[0], 16)
-
-  def hash(self) -> Tensor:
-    """
-    Calculates a 16-byte hash of the tensor.
-    ```python exec="false source="above" session="tensor" result="python"
-    t = Tensor(b"Hello World!").hash()
-    print(t.data().hex())
-    ```
-    """
-
-    data = self.flatten().bitcast(dtypes.uint8)
-    if (tsize := data.shape[0]) % 2**20 != 0: data = data.pad((0, 2**20 - tsize % 2**20))
-    base_chunks = ceildiv(data.shape[0], 2**20)
-    tree_depth = math.ceil(math.log(base_chunks, 65536)) if base_chunks > 1 else 0
-
-    level_chunks = base_chunks
-    for _ in range(tree_depth + 1):
-      data = data.reshape(level_chunks, 2**20)._hash_1mb().flatten()
-      if (tsize := data.shape[0]) % 2**20 != 0: data = data.pad((0, 2**20 - tsize % 2**20))
-      level_chunks = ceildiv(data.shape[0], 2**20)
-
-    return data[:16]
-
  def _softmax(self, axis, dtype:DTypeLike|None=None) -> tuple[Tensor, Tensor, Tensor]:
    m = self - self.max(axis=axis, keepdim=True).detach()
    if dtype is not None: m = m.cast(dtype)
@@ -9,7 +9,7 @@ class FastEnum(IntEnum):
 # the order of these Ops controls the order of the toposort
 class Ops(FastEnum):
  # uops that aren't rendered
-  NOOP = auto(); SINK = auto(); UNIQUE = auto(); DEVICE = auto(); KERNEL = auto(); PRECAST = auto()  # noqa: E702
+  NOOP = auto(); SINK = auto(); UNIQUE = auto(); DEVICE = auto(); KERNEL = auto()  # noqa: E702

  # buffer ops
  COPY = auto(); BUFFER = auto(); BUFFER_VIEW = auto(); MSELECT = auto(); MSTACK = auto() # noqa: E702
@@ -83,8 +83,6 @@ class GroupOp:
  Ternary = {Ops.WHERE, Ops.MULACC}
  ALU = set.union(Unary, Binary, Ternary)

-  Defines = {Ops.DEFINE_GLOBAL, Ops.DEFINE_LOCAL, Ops.DEFINE_REG}
-
  Irreducible = {Ops.CONST, Ops.DEFINE_VAR, Ops.SPECIAL, Ops.RANGE}
  Movement = {Ops.RESHAPE, Ops.EXPAND, Ops.PERMUTE, Ops.PAD, Ops.SHRINK, Ops.FLIP}

@@ -4,7 +4,7 @@ from tinygrad.dtype import dtypes

 class MathTrait:
  # required to implement
-  def alu(self:T, op:Ops, *src) -> T: raise NotImplementedError
+  def alu(self:T, arg:Ops, *src) -> T: raise NotImplementedError
  def const_like(self:T, b) -> T: raise NotImplementedError

  # great functions you get!
@@ -136,7 +136,6 @@ class UOp(MathTrait, metaclass=UOpMetaClass):

  @functools.cached_property
  def st(self) -> ShapeTracker|None:
-    if self.op in GroupOp.Block or self.op is Ops.INDEX: return None
    from tinygrad.shape.shapetracker import ShapeTracker
    # VIEW and MovementOps define a new ShapeTracker from the arg
    if self.op is Ops.VIEW: return self.arg
@@ -144,13 +143,12 @@ class UOp(MathTrait, metaclass=UOpMetaClass):
    # CONST with a DEVICE has a shape of ()
    if self.op is Ops.CONST and len(self.src) and self.src[0].op is Ops.DEVICE: return ShapeTracker.from_shape(())
    # BufferOps and ASSIGN flow ShapeTracker from a direct edge
-    if self.op in {Ops.STORE, Ops.ASSIGN, Ops.LOAD}: return self.src[0].st
    if self.op in GroupOp.Buffer: return views[0] if (views:=[x.st for x in self.src if x.op is Ops.VIEW]) else None
+    if self.op is Ops.ASSIGN: return self.src[0].st

    # BUFFER/BUFFER_VIEW and KERNEL only have a size
    if self.op in {Ops.BUFFER, Ops.BUFFER_VIEW}: return ShapeTracker.from_shape((self.size,))
    if self.op is Ops.KERNEL: return ShapeTracker.from_shape((self.arg.ast.size,))
-    #if self.op in {Ops.DEFINE_GLOBAL, Ops.DEFINE_LOCAL, Ops.DEFINE_REG}: return ShapeTracker.from_shape((self.dtype.size,))

    # otherwise we get the shape from sources
    if not (src_sts := [x.st for x in self.src if x.st is not None]): return None
@@ -169,7 +167,7 @@ class UOp(MathTrait, metaclass=UOpMetaClass):
    if self.op is Ops.VIEW: return self.shape
    # NOTE: if a parent doesn't have st its full_shape is empty
    parent_shapes = [x.full_shape for x in self.src]
-    return tuple(smax(x) for x in itertools.zip_longest(*parent_shapes, fillvalue=1))
+    return tuple(smax(x) for x in zip(*[x for x in parent_shapes if x != ()]))
  @property
  def shape(self) -> tuple[sint, ...]: return unwrap(self.st).shape
  @property
@@ -236,13 +234,12 @@ class UOp(MathTrait, metaclass=UOpMetaClass):
      i = (i,)
    return UOp(Ops.GEP, self.dtype.scalar().vec(len(i)) if len(i) > 1 else self.dtype.scalar(), (self,), i)
  def load(self, *src:UOp, **kwargs): return UOp(Ops.LOAD, dtype=kwargs.pop("dtype", self.dtype.base), src=(self,)+src, **kwargs)
-  def store(self, *src:UOp, **kwargs): return UOp(Ops.STORE, dtypes.void, (self,)+src, **kwargs)
+  def store(self, *src:UOp, **kwargs): return UOp(Ops.STORE, self.dtype, (self,)+src, **kwargs)
  def assign(self, x:UOp): return UOp(Ops.ASSIGN, self.dtype, (self, x))
-  def barrier(self, *src:UOp): return UOp(Ops.BARRIER, src=(self,)+src)
-  def alu(self, op, *src:UOp, **kwargs):
+  def alu(self, arg, *src:UOp):
    out_dtype = (self, *src)[-1].dtype
-    if op in {Ops.CMPLT, Ops.CMPNE}: out_dtype = dtypes.bool.vec(out_dtype.count) if out_dtype.count > 1 else dtypes.bool
-    return UOp(op, out_dtype, (self,)+src, **kwargs)
+    if arg in {Ops.CMPLT, Ops.CMPNE}: out_dtype = dtypes.bool.vec(out_dtype.count) if out_dtype.count > 1 else dtypes.bool
+    return UOp(arg, out_dtype, (self,)+src)
  @staticmethod
  def const(dtype:DType, b:ConstLike, device:str|tuple[str, ...]|None=None, shape:tuple[sint, ...]|None=None):
    if isinstance(b, UOp): return b.unbind()[0] if b.op is Ops.BIND else b
@@ -250,21 +247,25 @@ class UOp(MathTrait, metaclass=UOpMetaClass):
    ret = UOp(Ops.VCONST if isinstance(b, tuple) else Ops.CONST, dtype, arg=dtypes.as_const(b, dtype))
    if shape is not None:
      from tinygrad.shape.shapetracker import ShapeTracker
-      ret = ret.replace(src=(UOp(Ops.VIEW, dtypes.void, (), ShapeTracker.from_shape(shape, (0,)*len(shape))),))
+      ret = ret.replace(src=(ShapeTracker.from_shape(()).reshape((1,)*len(shape)).expand(shape).to_uop(),))
    if device is not None:
      ret = ret.replace(src=(UOp(Ops.DEVICE, arg=device).view(unwrap(ret.st)),))
    return ret
+  def valid(self): return UOp.where(UOp(Ops.VALID, dtypes.bool, (UOp(Ops.VIEW, arg=self.st),)), self.const_like(self.base.arg), 0)
  @staticmethod
  def range(dtype:DType, end:sint, idx:int): return UOp(Ops.RANGE, dtype=dtype, src=(sint_to_uop(end),), arg=idx)
-  def r(self, op:Ops, axis:tuple[int, ...]):
+  def r(self, op:Ops, axis:tuple[int, ...], permute=True):
    axis = tuple(sorted([x for x in axis if resolve(self.shape[x] != 1)]))
    if len(axis) == 0: return self
    # move any non reduce axis before the first reduce axis
    move_early, rest = partition(range(axis[0], len(self.shape)), lambda i: i not in axis and resolve(self.shape[i] != 1))
-    permaxis = tuple(range(axis[0])) + tuple(move_early) + tuple(rest)
-    ret = self.permute(permaxis)
-    new_axis = tuple([x for x in range(axis[0]+len(move_early), len(self.shape)) if resolve(ret.shape[x] != 1)])
-    assert len(axis) == len(new_axis)
+    if move_early and permute:
+      permaxis = tuple(range(axis[0])) + tuple(move_early) + tuple(rest)
+      ret = self.permute(permaxis)
+      new_axis = tuple([x for x in range(axis[0]+len(move_early), len(self.shape)) if resolve(ret.shape[x] != 1)])
+      assert len(axis) == len(new_axis)
+    else:
+      ret, new_axis = self, axis
    ret = UOp(Ops.REDUCE_AXIS, self.dtype, (ret,), (op, new_axis))
    return ret.reshape(tuple([x if i not in axis else 1 for i,x in enumerate(self.shape)]))
  def reduce(self, *src:UOp, **kwargs): return UOp(Ops.REDUCE, kwargs.pop('dtype', self.dtype), src=(self,)+src, **kwargs)
@@ -336,7 +337,7 @@ class UOp(MathTrait, metaclass=UOpMetaClass):
    return self
  def view(self, new_st:ShapeTracker) -> UOp: return UOp(Ops.VIEW, self.dtype, (self,), new_st)

-  def _mop(self, op:Ops, arg) -> UOp:
+  def _mop(self, op:Ops, arg):
    ret = UOp(op, self.dtype, (self,), arg)
    if self.st == ret.st: return self  # ignore NOOPs, also check ret.st
    return ret
@@ -369,7 +370,7 @@ class UOp(MathTrait, metaclass=UOpMetaClass):
      return self.src[0].device[self.arg]
    if self.op is Ops.MSTACK: return tuple(cast(str, x.device) for x in self.src)
    if self.op in {Ops.COPY, Ops.BUFFER, Ops.ALLREDUCE}: return self.src[1].device
-    return next((x._device for x in self.src if x._device is not None), None)
+    return dsrcs[0]._device if len(dsrcs:=[x for x in self.src if x._device is not None]) != 0 else None
  @property
  def buf_uop(self) -> UOp:
    if self.op is Ops.BUFFER: return self
@@ -537,6 +538,10 @@ class KernelInfo:
  opts_to_apply: tuple|None = None
  @property
  def function_name(self): return to_function_name(self.name)
+  @property
+  def global_dims(self) -> list[int]: return [i for i,x in enumerate(self.axis_types) if x is AxisType.GLOBAL]
+  @property
+  def local_dims(self) -> list[int]: return [i for i,x in enumerate(self.axis_types) if x in (AxisType.LOCAL, AxisType.GROUP_REDUCE)]

 # ******** ops in python ********

@@ -851,7 +856,7 @@ if TRACK_MATCH_STATS or PROFILE:
      with open(fn:=temp("rewrites.pkl", append_user=True), "wb") as f:
        print(f"rewrote {len(tracked_ctxs)} graphs and matched {sum(len(r.matches) for x in tracked_ctxs for r in x)} times, saved to {fn}")
        pickle.dump((tracked_keys, tracked_ctxs, uop_fields), f)
-    if VIZ: launch_viz(VIZ, temp("rewrites.pkl", append_user=True))
+    if VIZ: launch_viz("VIZ", temp("rewrites.pkl", append_user=True))
    if getenv("PRINT_MATCH_STATS", TRACK_MATCH_STATS.value):
      ret = [0,0,0.0,0.0]
      for k,v in sorted(list(match_stats.items()), key=lambda x: x[1][2]+x[1][3]):
@@ -861,10 +866,9 @@ if TRACK_MATCH_STATS or PROFILE:
      print(f"{ret[0]:6d} / {ret[1]:7d} -- {ret[3]*1000.:9.2f} / {(ret[2]+ret[3])*1000.:9.2f} ms -- TOTAL")
      print(f"{len(match_stats)} rules, {sum(v[0] > 0 for v in match_stats.values())} matched once")

-  def launch_viz(var:ContextVar, data:str):
-    os.environ[(env_str:=var.key)] = "0"
+  def launch_viz(env_str:str, data:str):
+    os.environ[env_str] = "0"
    os.environ[f"{env_str}_DATA"] = data
-    os.environ[f"{env_str}_VALUE"] = str(var.value)
    if not int(os.getenv("VIZ", "0")) and not int(os.getenv("PROFILE", "0")):
      args = ['--kernels', getenv("VIZ_DATA", "")] if getenv("VIZ_DATA", "") else []
      args += ['--profile', getenv("PROFILE_DATA", "")] if getenv("PROFILE_DATA", "") else []
@@ -2,7 +2,6 @@ from typing import cast, Callable
 from tinygrad.uop.ops import PatternMatcher, UPat, GroupOp, Ops, UOp, print_uops, python_alu, graph_rewrite, resolve
 from tinygrad.dtype import DType, ImageDType, dtypes, PtrDType, AddrSpace
 from tinygrad.helpers import all_same, prod, DEBUG, ContextVar, Context
-from tinygrad.shape.shapetracker import ShapeTracker
 try:
  import z3

@@ -131,43 +130,44 @@ index_pat = UPat(Ops.INDEX, name="idx").or_casted()
 spec = PatternMatcher([
  (UPat(Ops.DEFINE_GLOBAL, name="x"), lambda x: isinstance(x.dtype, (PtrDType, ImageDType)) and x.dtype.addrspace == AddrSpace.GLOBAL),
  (UPat(Ops.DEFINE_LOCAL, name="x"), lambda x: isinstance(x.dtype, PtrDType) and x.dtype.addrspace == AddrSpace.LOCAL),
-  (UPat(Ops.DEFINE_REG, src=()), lambda: True),
+  (UPat(Ops.DEFINE_REG, src=(UPat.var("c"),), name="x", allow_any_len=True),
+   lambda x,c: all(y.op is Ops.RANGE for y in x.src[1:]) and c.dtype.base == x.dtype.base),
  (UPat(Ops.DEFINE_VAR, name="x"), lambda x: isinstance(x.arg[1], int) and isinstance(x.arg[2], int)),

  (UPat(Ops.RANGE, src=(UPat.var("x"),), name="rng"), lambda rng,x: rng.dtype == x.dtype and isinstance(rng.arg, int)),
  (UPat(Ops.SPECIAL, src=()), lambda: True),

-  (UPat(Ops.VIEW, dtypes.void, src=(), name="x"), lambda x: isinstance(x.arg, ShapeTracker)),
-  (UPat(Ops.VIEW, src=(UPat.var("src"),), name="x"),
-   lambda x,src: isinstance(x.arg, ShapeTracker) and src.op is not Ops.STORE and x.dtype.base == src.dtype.base),
+  # TODO: confirm the args of both of these are shapetrackers
+  (UPat(Ops.VIEW, dtypes.void, src=()), lambda: True),
+  (UPat(Ops.VIEW, src=(UPat.var("src"),), name="x"), lambda x,src: src.op is not Ops.STORE and x.dtype.base == src.dtype.base),

  (UPat(Ops.VALID, dtypes.bool, (UPat(Ops.VIEW),)), lambda: True),
  (UPat(Ops.CONST, name="x"), lambda x: type(x.arg) is type(dtypes.as_const(x.arg, x.dtype))),

  # early LOAD has a <bufview, store?>
-  (UPat(Ops.LOAD, src=(UPat(Ops.VIEW, src=(UPat(GroupOp.Defines),)),)), lambda: True),
-  (UPat(Ops.LOAD, src=(UPat(Ops.VIEW, src=(UPat(GroupOp.Defines),)), UPat(Ops.STORE))), lambda: True),
+  (UPat(Ops.LOAD, src=(UPat(Ops.VIEW, src=(UPat((Ops.DEFINE_GLOBAL, Ops.DEFINE_LOCAL)),)),)), lambda: True),
+  (UPat(Ops.LOAD, src=(UPat(Ops.VIEW, src=(UPat((Ops.DEFINE_GLOBAL, Ops.DEFINE_LOCAL)),)), UPat(Ops.STORE))), lambda: True),

  # early STORE has a <bufview, val>
-  (UPat(Ops.STORE, src=(UPat(Ops.VIEW, src=(UPat(GroupOp.Defines),)), UPat())), lambda: True),
+  (UPat(Ops.STORE, src=(UPat(Ops.VIEW, src=(UPat((Ops.DEFINE_GLOBAL, Ops.DEFINE_LOCAL)),)), UPat())), lambda: True),

  # **** new style load/store ****

  # INDEX is used in new style load/store
  # INDEX takes a <buf, alu, gate?>
-  (UPat(Ops.INDEX, src=(UPat(GroupOp.Defines), UPat())), lambda: True),
-  (UPat(Ops.INDEX, src=(UPat(GroupOp.Defines), UPat(), UPat(dtype=dtypes.bool))), lambda: True),
+  (UPat(Ops.INDEX, src=(UPat((Ops.DEFINE_GLOBAL, Ops.DEFINE_LOCAL, Ops.DEFINE_REG)), UPat())), lambda: True),
+  (UPat(Ops.INDEX, src=(UPat((Ops.DEFINE_GLOBAL, Ops.DEFINE_LOCAL, Ops.DEFINE_REG)), UPat(), UPat(dtype=dtypes.bool))), lambda: True),

  # LOAD on STORE
-  (UPat(Ops.LOAD, src=(UPat(Ops.STORE),), allow_any_len=True), lambda: True),
+  (UPat(Ops.LOAD, src=(UPat(Ops.STORE),)), lambda: True),

  # LOAD takes a <bufidx, alt?, barrier?>
  (UPat(Ops.LOAD, src=(index_pat, UPat(Ops.IF, name="cond")), allow_any_len=True), lambda idx,cond: validate_index(idx,cond.src[0])),
  (UPat(Ops.LOAD, src=(index_pat,), allow_any_len=True), validate_index),

  # STORE takes a <bufidx, val, gate?>
-  (UPat(Ops.STORE, dtype=dtypes.void, src=(index_pat, UPat(name="val"), UPat(Ops.IF, name="gate")), allow_any_len=True), validate_store),
-  (UPat(Ops.STORE, dtype=dtypes.void, src=(index_pat, UPat(name="val")), allow_any_len=True), validate_store),
+  (UPat(Ops.STORE, src=(index_pat, UPat(name="val"), UPat(Ops.IF, name="gate")), allow_any_len=True), validate_store),
+  (UPat(Ops.STORE, src=(index_pat, UPat(name="val")), allow_any_len=True), validate_store),

  # most ALUs have all matching dtypes, except CMPLT, CMPNE, and WHERE
  (UPat(Ops.WHERE, name="w", src=(UPat(dtype=dtypes.bool), UPat.var("x"), UPat.var("y"))), lambda w,x,y: w.dtype == x.dtype == y.dtype),
@@ -199,7 +199,7 @@ spec = PatternMatcher([
  # NOTE: for testing, we let sinks be anything
  #(UPat(Ops.SINK, src=UPat(Ops.STORE)), lambda: True),
  (UPat(Ops.SINK, dtypes.void), lambda: True),
-  (UPat((Ops.NOOP, Ops.CUSTOMI, Ops.CUSTOM, Ops.PRECAST)), lambda: True),
+  (UPat((Ops.NOOP, Ops.CUSTOMI, Ops.CUSTOM)), lambda: True),

  # PTX LOAD/STORE
  (UPat((Ops.LOAD, Ops.STORE), src=(UPat(dtype=dtypes.int64),), allow_any_len=True), lambda: True),
@@ -209,7 +209,7 @@ spec = PatternMatcher([

 def verify_sink_dims(sink:UOp):
  if not all_same([s.shape for s in sink.src]): return False
-  for dims in zip(*[x.shape for x in sink.toposort() if x.op is Ops.VIEW]):
+  for dims in zip(*[x.shape for x in sink.toposort() if x.st is not None]):
    if len(n_dims:={s for s in dims if resolve(s!=1)}) > 1:
      print(f"# INVALID KERNEL DIMS: can only have 1 or n in each dimension: {n_dims}")
      return False
@@ -405,8 +405,8 @@ def reduce_mul_chain(r:UOp):
  return r.replace(src=(prod(inside) if len(inside) else r.src[0].const_like(1),)+r.src[1:])*prod(outside)

 # this is symbolic 2.0
-REMOVE_FROM_SINK = {Ops.SINK, Ops.UNROLL, Ops.PTRCAT, Ops.CAT, Ops.NOOP}
-REMOVE_FROM_BARRIER = {Ops.VECTORIZE, Ops.SINK, Ops.CAT, Ops.PTRCAT, Ops.NOOP}
+REMOVE_FROM_SINK = {Ops.SINK, Ops.UNROLL, Ops.PTRCAT, Ops.CAT}
+REMOVE_FROM_BARRIER = {Ops.VECTORIZE, Ops.SINK, Ops.CAT, Ops.PTRCAT}
 sym = symbolic_flat+PatternMatcher([
  # LOAD/STORE -> NOOP
  (UPat.var('x').store(UPat.var('x').load(), allow_any_len=True), lambda x: None if x.dtype.addrspace != AddrSpace.REG else x.src[0].src[0]),
@@ -457,6 +457,9 @@ sym = symbolic_flat+PatternMatcher([
  (UPat().index(UPat(), UPat.const(dtypes.bool, True)).named("idx"), lambda idx: idx.replace(src=idx.src[0:2])), # remove True
  (UPat((Ops.LOAD, Ops.STORE), src=(UPat().index(UPat(), UPat.const(dtypes.bool, False)).or_casted(),), allow_any_len=True, name="x"),
    lambda x: UOp(Ops.NOOP) if x.op is Ops.STORE else x.const_like(0)), # NULL pointer store does nothing. NULL pointer load produces 0
+  # remove NOOPs from SINK
+  (UPat(Ops.SINK, name="root"),
+    lambda root: UOp(Ops.SINK, root.dtype, a, root.arg) if len(a:=tuple(x for x in root.src if x.op is not Ops.NOOP)) != len(root.src) else None),
  # remove VECTORIZE from SINK/BARRIER. TODO: SINK/BARRIER are really the same thing at GLOBAL/LOCAL levels
  (UPat(Ops.BARRIER, name="root"),
    lambda root: UOp(Ops.BARRIER, root.dtype, tuple(flatten(x.src if x.op in REMOVE_FROM_BARRIER else (x,) for x in root.src)), root.arg)
@@ -10,6 +10,5 @@ fetch "dagrejs.github.io/project/dagre/latest/dagre.min.js"
 fetch "cdnjs.cloudflare.com/ajax/libs/highlight.js/11.10.0/styles/default.min.css"
 fetch "cdnjs.cloudflare.com/ajax/libs/highlight.js/11.10.0/highlight.min.js"
 fetch "cdnjs.cloudflare.com/ajax/libs/highlight.js/11.10.0/languages/python.min.js"
-fetch "cdnjs.cloudflare.com/ajax/libs/highlight.js/11.10.0/languages/x86asm.min.js"
 fetch "cdnjs.cloudflare.com/ajax/libs/highlight.js/11.10.0/languages/cpp.min.js"
 fetch "unpkg.com/@highlightjs/[email protected]/styles/tokyo-night-dark.min.css"
@@ -10,7 +10,6 @@
  <script src="assets/cdnjs.cloudflare.com/ajax/libs/highlight.js/11.10.0/highlight.min.js"></script>
  <script src="assets/cdnjs.cloudflare.com/ajax/libs/highlight.js/11.10.0/languages/python.min.js"></script>
  <script src="assets/cdnjs.cloudflare.com/ajax/libs/highlight.js/11.10.0/languages/cpp.min.js"></script>
-  <script src="assets/cdnjs.cloudflare.com/ajax/libs/highlight.js/11.10.0/languages/x86asm.min.js"></script>
  <link rel="stylesheet" href="assets/unpkg.com/@highlightjs/[email protected]/styles/tokyo-night-dark.min.css" />
  <style>
  * {
@@ -104,17 +103,6 @@
  .metadata > * + *, .rewrite-container > * + *, .ctx-list > * + * {
    margin-top: 12px;
  }
-  .stats-list > * + * {
-    margin-top: 8px;
-  }
-  .stats-list > p > * + * {
-    margin-top: 12px;
-  }
-  .stats-list {
-    width: 100%;
-    max-height: 240px;
-    overflow: auto;
-  }
  .ctx-list > ul > * + * {
    margin-top: 4px;
  }
@@ -227,48 +215,15 @@
  #device-list > div {
    min-height: 32px;
    max-width: 100px;
-    overflow-x: auto;
-    overflow-y: hidden;
+    overflow: hidden;
+    text-overflow: ellipsis;
    white-space: nowrap;
    display: flex;
+    cursor: pointer;
  }
  #device-list > div:hover {
    background-color: rgba(20, 23, 35, 0.3);
  }
-  .raw-text {
-    padding: 0 8px;
-    width: 100%;
-    height: 100%;
-  }
-  .raw-text code {
-    max-height: none !important;
-  }
-  table {
-    width: 100%;
-    border-collapse: separate;
-    border-spacing: 0;
-    border-radius: 8px;
-    overflow: hidden;
-    background-color: #1a1b26;
-    color: #f0f0f5;
-    font-size: 0.95em;
-  }
-  table td {
-    border-bottom: 1px solid #2c2f40;
-    vertical-align: top;
-  }
-  table tr:last-child > td {
-     border-bottom: none;
-  }
-  tr.main-row:hover {
-    background-color: #2a2d3a;
-  }
-  tr.sub-row {
-    max-width: 150px;
-  }
-  tr.main-row > td, tr.sub-row > td {
-    padding: 8px 12px;
-  }
  </style>
 </head>
 <body>
@@ -283,10 +238,10 @@
        </svg>
      </button>
    </div>
-    <div class="progress-message"></div>
    <div class="container ctx-list-parent"><div class="ctx-list"></div></div>
    <div class="view profiler"></div>
    <div class="view graph">
+      <div class="progress-message">Rendering new layout...</div>
      <svg id="graph-svg" preserveAspectRatio="xMidYMid meet">
        <g id="render">
          <g id="edges"></g>
@@ -25,10 +25,6 @@ function intersectRect(r1, r2) {
 let [workerUrl, worker, timeout] = [null, null, null];
 async function renderDag(graph, additions, recenter=false) {
  // start calculating the new layout (non-blocking)
-  const progressMessage = document.querySelector(".progress-message");
-  progressMessage.innerText = "Rendering new graph...";
-  if (timeout != null) clearTimeout(timeout);
-  timeout = setTimeout(() => {progressMessage.style.display = "block"}, 2000);
  if (worker == null) {
    const resp = await Promise.all(["/assets/dagrejs.github.io/project/dagre/latest/dagre.min.js","/js/worker.js"].map(u => fetch(u)));
    workerUrl = URL.createObjectURL(new Blob([(await Promise.all(resp.map((r) => r.text()))).join("\n")], { type: "application/javascript" }));
@@ -37,6 +33,9 @@ async function renderDag(graph, additions, recenter=false) {
    worker.terminate();
    worker = new Worker(workerUrl);
  }
+  if (timeout != null) clearTimeout(timeout);
+  const progressMessage = document.querySelector(".progress-message");
+  timeout = setTimeout(() => {progressMessage.style.display = "block"}, 2000);
  worker.postMessage({graph, additions, ctxs});
  worker.onmessage = (e) => {
    displayGraph("graph");
@@ -162,7 +161,7 @@ async function renderProfiler() {
      else if (ref != null) {
        const start = ref.step>0 ? ref.step+1 : 0;
        const stepIdx = ctxs[ref.ctx+1].steps.findIndex((s, i) => i >= start && s.name == e.name);
-        ref = stepIdx === -1 ? null : {ctx:ref.ctx, step:stepIdx};
+        if (stepIdx !== -1) ref = {ctx:ref.ctx, step:stepIdx};
      }
      const arg = { tooltipText:formatTime(e.dur), ...ref };
      // offset y by depth
@@ -172,7 +171,6 @@ async function renderProfiler() {
    const startY = offsetY+(levelHeight*timeline.maxDepth)+padding/2;
    let area = mem.shapes.length === 0 ? 0 : areaScale(mem.peak);
    if (area === 0) div.style.pointerEvents = "none";
-    else div.style.cursor = "pointer";
    if (k === focusedDevice) {
      // expand memory graph for the focused device
      area = maxArea*4;
@@ -230,7 +228,6 @@ async function renderProfiler() {
      ctx.fillRect(x, e.y, width, e.height);
      rectLst.push({ y0:e.y, y1:e.y+e.height, x0:x, x1:x+width, arg:e.arg });
      // add label
-      if (e.label == null) continue;
      ctx.textAlign = "left";
      ctx.textBaseline = "middle";
      let [labelX, labelWidth] = [x+2, 0];
@@ -362,7 +359,7 @@ document.getElementById("zoom-to-fit-btn").addEventListener("click", () => {

 // **** main VIZ interfacae

-function codeBlock(st, language, { loc, wrap }={}) {
+function codeBlock(st, language, { loc, wrap }) {
  const code = document.createElement("code");
  code.innerHTML = hljs.highlight(st, { language }).value;
  code.className = "hljs";
@@ -377,14 +374,6 @@ function codeBlock(st, language, { loc, wrap }={}) {
  return ret;
 }

-function appendRow(table, name, value, unit, cls) {
-  const tr = table.appendChild(document.createElement("tr"));
-  tr.className = cls;
-  tr.appendChild(document.createElement("td")).innerText = name;
-  tr.appendChild(document.createElement("td")).innerText = unit === "us" ? formatTime(value) : value.toFixed(2)+(unit != null ? " "+unit : "%");
-  return tr;
-}
-
 function setActive(e) {
  if (e == null) return;
  e.classList.add("active");
@@ -464,7 +453,7 @@ async function main() {
      for (const [j,u] of steps.entries()) {
        const inner = ul.appendChild(document.createElement("ul"));
        inner.id = `step-${i}-${j}`;
-        inner.innerText = `${u.name ?? u.loc[0].replaceAll("\\", "/").split("/").pop()+':'+u.loc[1]}`+(u.match_count ? ` - ${u.match_count}` : '');
+        inner.innerText = `${u.name ?? u.loc[0].replaceAll("\\", "/").split("/").pop()+':'+u.loc[1]} - ${u.match_count}`;
        inner.style.marginLeft = `${8*u.depth}px`;
        inner.onclick = (e) => {
          e.stopPropagation();
@@ -478,35 +467,23 @@ async function main() {
  const { currentCtx, currentStep, currentRewrite, expandSteps } = state;
  if (currentCtx == -1) return;
  const ctx = ctxs[currentCtx];
-  const step = ctx.steps[currentStep];
-  const ckey = step?.query;
+  const ckey = `ctx=${currentCtx-1}&idx=${currentStep}`;
  // close any pending event sources
  let activeSrc = null;
  for (const e of evtSources) {
-    const url = new URL(e.url);
-    if (url.pathname+url.search !== ckey) e.close();
+    if (e.url.split("?")[1] !== ckey) e.close();
    else if (e.readyState === EventSource.OPEN) activeSrc = e;
  }
  if (ctx.name === "Profiler") return renderProfiler();
  if (ckey in cache) {
    ret = cache[ckey];
  }
-  // ** Disassembly view
-  if (ckey.startsWith("/disasm")) {
-    if (!(ckey in cache)) cache[ckey] = ret = await (await fetch(ckey)).json();
-    displayGraph("profiler");
-    document.querySelector(".metadata").innerHTML = "";
-    const root = document.createElement("div");
-    root.className = "raw-text";
-    root.appendChild(codeBlock(ret.src, "x86asm"));
-    return document.querySelector(".profiler").replaceChildren(root);
-  }
-  // ** UOp view (default)
  // if we don't have a complete cache yet we start streaming rewrites in this step
+  const step = ctx.steps[currentStep];
  if (!(ckey in cache) || (cache[ckey].length !== step.match_count+1 && activeSrc == null)) {
    ret = [];
    cache[ckey] = ret;
-    const eventSource = new EventSource(ckey);
+    const eventSource = new EventSource(`/ctxs?${ckey}`);
    evtSources.push(eventSource);
    eventSource.onmessage = (e) => {
      if (e.data === "END") return eventSource.close();
@@ -525,28 +502,6 @@ async function main() {
  const metadata = document.querySelector(".metadata");
  const [code, lang] = ctx.fmt != null ? [ctx.fmt, "cpp"] : [ret[currentRewrite].uop, "python"];
  metadata.replaceChildren(codeBlock(step.code_line, "python", { loc:step.loc, wrap:true }), codeBlock(code, lang, { wrap:false }));
-  if (ctx.runtime_stats != null) {
-    const div = metadata.appendChild(document.createElement("div"));
-    div.className = "stats-list";
-    for (const [i, s] of ctx.runtime_stats.entries()) {
-      const p = div.appendChild(document.createElement("p"));
-      if (ctx.runtime_stats.length > 1) p.innerText = `Run ${i+1}/${ctx.runtime_stats.length}`;
-      const table = div.appendChild(document.createElement("table"));
-      const tbody = table.appendChild(document.createElement("tbody"));
-      for (const { name, value, unit, subunits } of s.data) {
-          const mainRow = appendRow(tbody, name, value, unit, "main-row");
-          if (!subunits?.length) continue;
-          const subunitRow = tbody.appendChild(document.createElement("tr"));
-          subunitRow.style.display = "none";
-          mainRow.onclick = () => subunitRow.style.display = subunitRow.style.display === "none" ? "table-row" : "none";
-          mainRow.style.cursor = "pointer";
-          const td = subunitRow.appendChild(document.createElement("td"));
-          td.colSpan = 2;
-          const table = td.appendChild(document.createElement("table"));
-          for (const u of subunits) appendRow(table, u.name, u.value, unit, "sub-row");
-      }
-    }
-  }
  // ** rewrite steps
  if (step.match_count >= 1) {
    const rewriteList = metadata.appendChild(document.createElement("div"));
@@ -1,14 +1,12 @@
 #!/usr/bin/env python3
-import multiprocessing, pickle, difflib, os, threading, json, time, sys, webbrowser, socket, argparse, socketserver, functools, codecs, io
-from contextlib import redirect_stdout
+import multiprocessing, pickle, difflib, os, threading, json, time, sys, webbrowser, socket, argparse, socketserver, functools, codecs
 from decimal import Decimal
 from http.server import BaseHTTPRequestHandler
 from urllib.parse import parse_qs, urlparse
 from typing import Any, TypedDict, Generator
 from tinygrad.helpers import colored, getenv, tqdm, unwrap, word_wrap, TRACEMETA, ProfileEvent, ProfileRangeEvent, TracingKey
 from tinygrad.uop.ops import TrackedGraphRewrite, UOp, Ops, printable, GroupOp, srender, sint
-from tinygrad.device import ProfileDeviceEvent, ProfileGraphEvent, ProfileGraphEntry, ProfilePointEvent, Device
-from tinygrad.renderer import ProgramSpec
+from tinygrad.device import ProfileDeviceEvent, ProfileGraphEvent, ProfileGraphEntry, ProfilePointEvent
 from tinygrad.dtype import dtypes

 uops_colors = {Ops.LOAD: "#ffc0c0", Ops.STORE: "#87CEEB", Ops.CONST: "#e0e0e0", Ops.VCONST: "#e0e0e0", Ops.REDUCE: "#FF5B5B",
@@ -27,12 +25,8 @@ ref_map:dict[Any, int] = {}
 def get_metadata(keys:list[TracingKey], contexts:list[list[TrackedGraphRewrite]]) -> list[dict]:
  ret = []
  for i,(k,v) in enumerate(zip(keys, contexts)):
-    steps = [{"name":s.name, "loc":s.loc, "depth":s.depth, "match_count":len(s.matches), "code_line":printable(s.loc),
-              "query":f"/ctxs?ctx={i}&idx={j}"} for j,s in enumerate(v)]
-    if isinstance(k.ret, ProgramSpec): steps.append({"name":"View Disassembly", "query":f"/disasm?ctx={i}"})
-    ret.append(r:={"name":k.display_name, "fmt":k.fmt, "steps":steps})
-    # use the first key to get runtime profiling data about this context
-    if getenv("PROFILE_VALUE") >= 2 and k.keys: r["runtime_stats"] = get_runtime_stats(k.keys[0])
+    steps = [{"name":s.name, "loc":s.loc, "depth":s.depth, "match_count":len(s.matches), "code_line":printable(s.loc)} for s in v]
+    ret.append({"name":k.display_name, "fmt":k.fmt, "steps":steps})
    for key in k.keys: ref_map[key] = i
  return ret

@@ -178,19 +172,6 @@ def get_profile(profile:list[ProfileEvent]):
  dev_layout = {k:{"timeline":timeline_layout(v), "mem":mem_layout(v)} for k,v in dev_events.items()}
  return json.dumps({"layout":dev_layout, "st":min_ts, "et":max_ts}).encode("utf-8")

-def get_runtime_stats(key) -> list[dict]:
-  ret:list[dict] = []
-  for e in profile:
-    if isinstance(e, ProfileRangeEvent) and e.en is not None and e.name == key:
-      ret.append({"device":e.device, "data":[{"name":"Duration", "value":float(e.en-e.st), "unit":"us"}]})
-  return ret
-
-def get_disassembly(ctx:list[str]):
-  if not isinstance(prg:=contexts[0][int(ctx[0])].ret, ProgramSpec): return
-  lib = Device[prg.device].compiler.compile(prg.src)
-  with redirect_stdout(buf:=io.StringIO()): Device[prg.device].compiler.disassemble(lib)
-  return json.dumps({"src":buf.getvalue()}).encode()
-
 # ** HTTP server

 class Handler(BaseHTTPRequestHandler):
@@ -205,10 +186,9 @@ class Handler(BaseHTTPRequestHandler):
        if url.path.endswith(".js"): content_type = "application/javascript"
        if url.path.endswith(".css"): content_type = "text/css"
      except FileNotFoundError: status_code = 404
-    elif (query:=parse_qs(url.query)):
-      if url.path == "/disasm": ret, content_type = get_disassembly(**query), "application/json"
-      else: return self.stream_json(get_details(contexts[1][int(query["ctx"][0])][int(query["idx"][0])]))
-    elif url.path == "/ctxs": ret, content_type = json.dumps(ctxs).encode(), "application/json"
+    elif url.path == "/ctxs":
+      if "ctx" in (q:=parse_qs(url.query)): return self.stream_json(get_details(contexts[1][int(q["ctx"][0])][int(q["idx"][0])]))
+      ret, content_type = json.dumps(ctxs).encode(), "application/json"
    elif url.path == "/get_profile" and profile_ret is not None: ret, content_type = profile_ret, "application/json"
    else: status_code = 404
Author	SHA1	Message	Date
geohot	ece4604825	cleanups	2025-07-23 16:36:37 -07:00
geohot	0cc71fec59	bugfix to match speed	2025-07-23 16:24:38 -07:00
geohot	1e56fb559a	gemm passes spec	2025-07-23 15:50:01 -07:00
geohot	a87bc6dacc	matmul is correct	2025-07-23 15:35:57 -07:00
geohot	68db0e2338	write out kernel 3 in uops	2025-07-23 14:37:48 -07:00