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update env_vars.md (#15722)

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remove HCQ_VISIBLE_DEVICES, IMAGE=2 and old DEBUG=3 stuff
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chenyu
2026-04-14 09:13:35 -04:00
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parent 359b1582d6
commit 528faa18ec
1 changed files with 3 additions and 4 deletions
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docs/env_vars.md
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@@ -34,9 +34,8 @@ DEBUG | [1-7] | enable debugging output (operations, timings,
DEV | [AMD, NV, ...] | enable a specific backend, see [below](#dev-variable)
BEAM | [#] | number of beams in kernel beam search
DEFAULT_FLOAT | [HALF, ...]| specify the default float dtype (FLOAT32, HALF, BFLOAT16, FLOAT64, ...), default to FLOAT32
IMAGE | [1-2] | enable 2d specific optimizations
IMAGE | [1] | enable 2d specific optimizations
FLOAT16 | [1] | use float16 for images instead of float32
HCQ_VISIBLE_DEVICES | [list[int]]| restricts the HCQ devices that are available. The format is a comma-separated list of identifiers (indexing starts with 0).
JIT | [0-2] | 0=disabled, 1=[jit enabled](quickstart.md#jit) (default), 2=jit enabled, but graphs are disabled
VIZ | [1] | 0=disabled, 1=[viz enabled](https://github.com/tinygrad/tinygrad/tree/master/tinygrad/viz)
ALLOW_TF32 | [1] | enable TensorFloat-32 tensor cores on Ampere or newer GPUs.
@@ -65,8 +64,8 @@ Variable | Value | Description
---|---|---
DEBUG | >= 1 | Enables debugging and lists devices being used
DEBUG | >= 2 | Provides performance metrics for operations, including timing, memory usage, bandwidth for each kernel execution
DEBUG | >= 3 | Outputs buffers used for each kernel (shape, dtype and strides) and the applied optimizations at a kernel level
DEBUG | >= 3 | Outputs the applied optimizations at a kernel level
DEBUG | >= 4 | Outputs the generated kernel code
DEBUG | >= 5 | Displays the intermediate representation of the computation UOps (AST)
DEBUG | >= 5 | Displays the intermediate representation of the computation UOps
DEBUG | >= 6 | Displays the intermediate representation of the computation UOps in a linearized manner, detailing the operation sequence
DEBUG | >= 7 | Outputs the assembly code generated for the target hardware