diff --git a/test/mockgpu/cuda/cuda.py b/test/mockgpu/cuda/cuda.py
index 0889f4899e..466d269a9f 100644
--- a/test/mockgpu/cuda/cuda.py
+++ b/test/mockgpu/cuda/cuda.py
@@ -1,15 +1,14 @@
 from __future__ import annotations
 from typing import Any
 import ctypes, time
+from test.mockgpu.helpers import ptx_run
 from tinygrad.runtime.autogen import cuda as orig_cuda
-from test.mockgpu.helpers import _try_dlopen_gpuocelot
 from tinygrad.helpers import mv_address
 
 for attr in dir(orig_cuda):
   if not attr.startswith('__'):
     globals()[attr] = getattr(orig_cuda, attr)
 
-gpuocelot_lib = _try_dlopen_gpuocelot()
 
 # Global state
 class CUDAState:
@@ -128,7 +127,7 @@ def cuModuleUnload(hmod) -> int:
 def cuLaunchKernel(f, gx: int, gy: int, gz: int, lx: int, ly: int, lz: int, sharedMemBytes: int,
                    hStream: Any, kernelParams: Any, extra: Any) -> int:
   cargs = [ctypes.cast(getattr(extra, field[0]), ctypes.c_void_p) for field in extra._real_fields_]
-  try: gpuocelot_lib.ptx_run(ctypes.cast(f.value, ctypes.c_char_p), len(cargs), (ctypes.c_void_p*len(cargs))(*cargs), lx, ly, lz, gx, gy, gz, 0)
+  try: ptx_run(ctypes.cast(f.value, ctypes.c_char_p), len(cargs), (ctypes.c_void_p*len(cargs))(*cargs), lx, ly, lz, gx, gy, gz, 0)
   except Exception as e:
     print("Error in cuLaunchKernel:", e)
     return orig_cuda.CUDA_ERROR_LAUNCH_FAILED
diff --git a/test/mockgpu/helpers.py b/test/mockgpu/helpers.py
index 5aa8d085f2..1d3a8648d9 100644
--- a/test/mockgpu/helpers.py
+++ b/test/mockgpu/helpers.py
@@ -1,18 +1,11 @@
-import ctypes, ctypes.util
+import ctypes
+from tinygrad.runtime.support import c
 
-def _try_dlopen_gpuocelot():
-  GPUOCELOT_PATHS = [ctypes.util.find_library("gpuocelot")] if ctypes.util.find_library("gpuocelot") is not None else []
-  GPUOCELOT_PATHS += ["libgpuocelot.so", "/usr/local/lib/libgpuocelot.so",
-                      "libgpuocelot.dylib", "/usr/local/lib/libgpuocelot.dylib", "/opt/homebrew/lib/libgpuocelot.dylib"]
-  for path in GPUOCELOT_PATHS:
-    try:
-      gpuocelot_lib = ctypes.CDLL(path)
-      gpuocelot_lib.ptx_run.argtypes = [ctypes.c_char_p, ctypes.c_int, ctypes.POINTER(ctypes.c_void_p), ctypes.c_int, ctypes.c_int,
-        ctypes.c_int, ctypes.c_int, ctypes.c_int, ctypes.c_int, ctypes.c_int]
-    except OSError: pass
-    else: return gpuocelot_lib
-  print("Could not find libgpuocelot.so")
-  return None
+gpuocelot_lib = c.DLL("ocelot", "gpuocelot")
+@gpuocelot_lib.bind(None, ctypes.c_char_p, ctypes.c_int, ctypes.POINTER(ctypes.c_void_p), ctypes.c_int, ctypes.c_int, ctypes.c_int,
+                    ctypes.c_int, ctypes.c_int, ctypes.c_int, ctypes.c_int)
+def ptx_run(source:bytes, n_args:int, args:c.POINTER[ctypes.c_void_p], blck_x:int, blck_y:int, blck_z:int,
+            grid_x:int, grid_y:int, grid_z:int, shared_mem_size:int): pass
 
 class PythonRemu:
   """Python RDNA3/RDNA4 emulator wrapper used by mockgpu."""
diff --git a/test/mockgpu/nv/nvgpu.py b/test/mockgpu/nv/nvgpu.py
index 27b82d6bd7..eb6cf7f7ff 100644
--- a/test/mockgpu/nv/nvgpu.py
+++ b/test/mockgpu/nv/nvgpu.py
@@ -2,7 +2,7 @@ import ctypes, time
 from tinygrad.runtime.autogen import nv_570 as nv_gpu
 from enum import Enum, auto
 from test.mockgpu.gpu import VirtGPU
-from test.mockgpu.helpers import _try_dlopen_gpuocelot
+from test.mockgpu.helpers import ptx_run
 from tinygrad.helpers import to_mv
 from tinygrad.runtime.support.c import init_c_struct_t
 
@@ -16,8 +16,6 @@ def make_qmd_struct_type():
   return init_c_struct_t(0x40 * 4, tuple(fields))
 qmd_struct_t = make_qmd_struct_type()
 
-gpuocelot_lib = _try_dlopen_gpuocelot()
-
 class SchedResult(Enum): CONT = auto(); YIELD = auto() # noqa: E702
 
 class GPFIFO:
@@ -97,9 +95,7 @@ class GPFIFO:
     cargs = [ctypes.cast(args[i], ctypes.c_void_p) for i in range(args_cnt)] + [ctypes.cast(vals[i], ctypes.c_void_p) for i in range(vals_cnt)]
     gx, gy, gz = qmd.cta_raster_width, qmd.cta_raster_height, qmd.cta_raster_depth
     lx, ly, lz = qmd.cta_thread_dimension0, qmd.cta_thread_dimension1, qmd.cta_thread_dimension2
-    try:
-      gpuocelot_lib.ptx_run(ctypes.cast(prg_addr, ctypes.c_char_p), args_cnt+vals_cnt,
-        (ctypes.c_void_p*len(cargs))(*cargs), lx, ly, lz, gx, gy, gz, 0)
+    try: ptx_run(ctypes.cast(prg_addr, ctypes.c_char_p), args_cnt+vals_cnt, (ctypes.c_void_p*len(cargs))(*cargs), lx, ly, lz, gx, gy, gz, 0)
     except Exception as e: print("failed to execute:", e)
     if qmd.release0_enable:
       rel0 = to_mv(qmd.release0_address_lower + (qmd.release0_address_upper << 32), 0x10).cast('Q')