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[FastMath] Disable default TVM fastmath intrinsic dispatch and add explicit fastmath op to invoke #875

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Merged
merged 8 commits into from
Sep 26, 2025
Merged

[FastMath] Disable default TVM fastmath intrinsic dispatch and add explicit fastmath op to invoke #875

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d2f68b9
Add fast math operations for CUDA: exp, exp10, log, log2, log10, tan,…
LeiWang1999 Sep 25, 2025
2463338
Refactor fast math operation definitions for consistency and readabil…
LeiWang1999 Sep 25, 2025
029ddf3
Remove unnecessary pass configurations for warp specialization and TM…
LeiWang1999 Sep 25, 2025
7708cc1
Merge branch 'main' of https://github.com/tile-ai/tilelang into fast_…
LeiWang1999 Sep 25, 2025
65927de
Update fastmath tests to reflect that tl.* intrinsics generate no fas…
LeiWang1999 Sep 26, 2025
a44e234
Fix formatting in fastmath test comments for clarity on tl.* intrinsi…
LeiWang1999 Sep 26, 2025
0cf3d49
Add precision comparison tool for CUDA operations
LeiWang1999 Sep 26, 2025
ce4a1a5
Add precision comparison tool for CUDA operations
LeiWang1999 Sep 26, 2025
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2 changes: 1 addition & 1 deletion 3rdparty/tvm
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Submodule tvm updated from 7a71ee to 883e96
109 changes: 109 additions & 0 deletions maint/precision/README.md
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Original file line number Diff line number Diff line change
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=== div ===
Implementation Max Abs Error Mean Abs Error Max Rel Error Mean Rel Error
------------------------------------------------------------------------------------------
FP32 Precise vs Double max abs: 1.219e-04, mean abs: 8.916e-08, max rel: 5.952e-08, mean rel: 2.152e-08
Triton LibDevice vs Double max abs: 1.219e-04, mean abs: 8.916e-08, max rel: 5.952e-08, mean rel: 2.152e-08
TileLang vs Double max abs: 1.219e-04, mean abs: 8.916e-08, max rel: 5.952e-08, mean rel: 2.152e-08
PyTorch vs Double max abs: 1.219e-04, mean abs: 8.916e-08, max rel: 5.952e-08, mean rel: 2.152e-08
Triton vs Double max abs: 2.605e-04, mean abs: 1.285e-07, max rel: 1.455e-07, mean rel: 3.175e-08
TileLang Fastmath vs Double max abs: 2.605e-04, mean abs: 1.285e-07, max rel: 1.455e-07, mean rel: 3.175e-08
CUDA Fast vs Double max abs: 2.605e-04, mean abs: 1.285e-07, max rel: 1.455e-07, mean rel: 3.175e-08

=== reciprocal ===
Implementation Max Abs Error Mean Abs Error Max Rel Error Mean Rel Error
------------------------------------------------------------------------------------------
FP32 Precise vs Double max abs: 3.039e-05, mean abs: 4.418e-08, max rel: 5.960e-08, mean rel: 2.235e-08
Triton LibDevice vs Double max abs: 3.039e-05, mean abs: 4.418e-08, max rel: 5.960e-08, mean rel: 2.235e-08
TileLang vs Double max abs: 3.039e-05, mean abs: 4.418e-08, max rel: 5.960e-08, mean rel: 2.235e-08
PyTorch vs Double max abs: 3.039e-05, mean abs: 4.418e-08, max rel: 5.960e-08, mean rel: 2.235e-08
Triton vs Double max abs: 4.470e-05, mean abs: 4.886e-08, max rel: 9.699e-08, mean rel: 2.461e-08
TileLang Fastmath vs Double max abs: 4.470e-05, mean abs: 4.886e-08, max rel: 9.699e-08, mean rel: 2.461e-08
CUDA Fast vs Double max abs: 4.470e-05, mean abs: 4.886e-08, max rel: 9.699e-08, mean rel: 2.461e-08

=== exp ===
Implementation Max Abs Error Mean Abs Error Max Rel Error Mean Rel Error
------------------------------------------------------------------------------------------
FP32 Precise vs Double max abs: 5.494e-06, mean abs: 2.153e-07, max rel: 1.483e-07, mean rel: 3.200e-08
Triton LibDevice vs Double max abs: 5.494e-06, mean abs: 2.153e-07, max rel: 1.483e-07, mean rel: 3.200e-08
TileLang vs Double max abs: 5.494e-06, mean abs: 2.153e-07, max rel: 1.483e-07, mean rel: 3.200e-08
PyTorch vs Double max abs: 5.494e-06, mean abs: 2.153e-07, max rel: 1.483e-07, mean rel: 3.200e-08
Triton vs Double max abs: 1.338e-05, mean abs: 5.023e-07, max rel: 2.641e-07, mean rel: 5.564e-08
TileLang Fastmath vs Double max abs: 1.338e-05, mean abs: 5.023e-07, max rel: 2.641e-07, mean rel: 5.564e-08
CUDA Fast vs Double max abs: 1.338e-05, mean abs: 5.023e-07, max rel: 2.641e-07, mean rel: 5.564e-08

=== log ===
Implementation Max Abs Error Mean Abs Error Max Rel Error Mean Rel Error
------------------------------------------------------------------------------------------
FP32 Precise vs Double max abs: 2.684e-07, mean abs: 2.051e-08, max rel: 7.886e-08, mean rel: 2.297e-08
Triton LibDevice vs Double max abs: 2.684e-07, mean abs: 2.051e-08, max rel: 7.886e-08, mean rel: 2.297e-08
TileLang vs Double max abs: 2.684e-07, mean abs: 2.051e-08, max rel: 7.886e-08, mean rel: 2.297e-08
PyTorch vs Double max abs: 2.684e-07, mean abs: 2.051e-08, max rel: 7.886e-08, mean rel: 2.297e-08
Triton vs Double max abs: 2.684e-07, mean abs: 2.051e-08, max rel: 7.886e-08, mean rel: 2.297e-08
TileLang Fastmath vs Double max abs: 9.087e-07, mean abs: 4.760e-08, max rel: 2.019e-02, mean rel: 3.183e-07
CUDA Fast vs Double max abs: 9.087e-07, mean abs: 4.760e-08, max rel: 2.019e-02, mean rel: 3.183e-07

=== sin ===
Implementation Max Abs Error Mean Abs Error Max Rel Error Mean Rel Error
------------------------------------------------------------------------------------------
FP32 Precise vs Double max abs: 7.731e-08, mean abs: 1.401e-08, max rel: 1.148e-07, mean rel: 2.492e-08
Triton LibDevice vs Double max abs: 7.731e-08, mean abs: 1.401e-08, max rel: 1.148e-07, mean rel: 2.492e-08
TileLang vs Double max abs: 7.731e-08, mean abs: 1.401e-08, max rel: 1.148e-07, mean rel: 2.492e-08
PyTorch vs Double max abs: 7.731e-08, mean abs: 1.401e-08, max rel: 1.148e-07, mean rel: 2.492e-08
Triton vs Double max abs: 7.731e-08, mean abs: 1.401e-08, max rel: 1.148e-07, mean rel: 2.492e-08
TileLang Fastmath vs Double max abs: 6.463e-07, mean abs: 1.251e-07, max rel: 7.111e-02, mean rel: 1.425e-06
CUDA Fast vs Double max abs: 6.463e-07, mean abs: 1.251e-07, max rel: 7.111e-02, mean rel: 1.425e-06

=== cos ===
Implementation Max Abs Error Mean Abs Error Max Rel Error Mean Rel Error
------------------------------------------------------------------------------------------
FP32 Precise vs Double max abs: 8.668e-08, mean abs: 1.587e-08, max rel: 1.199e-07, mean rel: 2.513e-08
Triton LibDevice vs Double max abs: 8.668e-08, mean abs: 1.587e-08, max rel: 1.199e-07, mean rel: 2.513e-08
TileLang vs Double max abs: 8.668e-08, mean abs: 1.587e-08, max rel: 1.199e-07, mean rel: 2.513e-08
PyTorch vs Double max abs: 8.668e-08, mean abs: 1.587e-08, max rel: 1.199e-07, mean rel: 2.513e-08
Triton vs Double max abs: 8.668e-08, mean abs: 1.587e-08, max rel: 1.199e-07, mean rel: 2.513e-08
TileLang Fastmath vs Double max abs: 4.006e-07, mean abs: 9.249e-08, max rel: 5.275e-02, mean rel: 7.307e-07
CUDA Fast vs Double max abs: 4.006e-07, mean abs: 9.249e-08, max rel: 5.275e-02, mean rel: 7.307e-07

=== sqrt ===
Implementation Max Abs Error Mean Abs Error Max Rel Error Mean Rel Error
------------------------------------------------------------------------------------------
FP32 Precise vs Double max abs: 5.960e-08, mean abs: 2.554e-08, max rel: 5.960e-08, mean rel: 1.986e-08
Triton LibDevice vs Double max abs: 5.960e-08, mean abs: 2.554e-08, max rel: 5.960e-08, mean rel: 1.986e-08
TileLang vs Double max abs: 5.960e-08, mean abs: 2.554e-08, max rel: 5.960e-08, mean rel: 1.986e-08
PyTorch vs Double max abs: 5.960e-08, mean abs: 2.554e-08, max rel: 5.960e-08, mean rel: 1.986e-08
Triton vs Double max abs: 1.114e-07, mean abs: 2.947e-08, max rel: 9.962e-08, mean rel: 2.291e-08
TileLang Fastmath vs Double max abs: 1.114e-07, mean abs: 2.947e-08, max rel: 9.962e-08, mean rel: 2.291e-08
CUDA Fast vs Double max abs: 1.114e-07, mean abs: 2.947e-08, max rel: 9.962e-08, mean rel: 2.291e-08

=== tanh ===
Implementation Max Abs Error Mean Abs Error Max Rel Error Mean Rel Error
------------------------------------------------------------------------------------------
FP32 Precise vs Double max abs: 1.056e-07, mean abs: 1.636e-08, max rel: 1.966e-07, mean rel: 2.359e-08
Triton LibDevice vs Double max abs: 1.056e-07, mean abs: 1.636e-08, max rel: 1.966e-07, mean rel: 2.359e-08
TileLang vs Double max abs: 1.056e-07, mean abs: 1.636e-08, max rel: 1.966e-07, mean rel: 2.359e-08
PyTorch vs Double max abs: 1.056e-07, mean abs: 1.636e-08, max rel: 1.966e-07, mean rel: 2.359e-08
Triton vs Double max abs: 2.293e-07, mean abs: 3.965e-08, max rel: 6.204e-04, mean rel: 1.100e-07
TileLang Fastmath vs Double max abs: 7.826e-06, mean abs: 1.384e-06, max rel: 1.081e-05, mean rel: 1.906e-06
CUDA Fast vs Double max abs: 7.826e-06, mean abs: 1.384e-06, max rel: 1.081e-05, mean rel: 1.906e-06

=== rsqrt ===
Implementation Max Abs Error Mean Abs Error Max Rel Error Mean Rel Error
------------------------------------------------------------------------------------------
FP32 Precise vs Double max abs: 2.057e-06, mean abs: 2.798e-08, max rel: 1.224e-07, mean rel: 2.918e-08
Triton LibDevice vs Double max abs: 9.535e-07, mean abs: 2.199e-08, max rel: 5.960e-08, mean rel: 2.315e-08
TileLang vs Double max abs: 2.057e-06, mean abs: 2.798e-08, max rel: 1.224e-07, mean rel: 2.918e-08
PyTorch vs Double max abs: 2.057e-06, mean abs: 2.798e-08, max rel: 1.224e-07, mean rel: 2.918e-08
Triton vs Double max abs: 2.057e-06, mean abs: 2.798e-08, max rel: 1.224e-07, mean rel: 2.918e-08
TileLang Fastmath vs Double max abs: 2.057e-06, mean abs: 2.798e-08, max rel: 1.224e-07, mean rel: 2.918e-08
CUDA Fast vs Double max abs: 2.057e-06, mean abs: 2.798e-08, max rel: 1.224e-07, mean rel: 2.918e-08

=== inv_sqrt ===
Implementation Max Abs Error Mean Abs Error Max Rel Error Mean Rel Error
------------------------------------------------------------------------------------------
FP32 Precise vs Double max abs: 2.501e-06, mean abs: 2.911e-08, max rel: 8.939e-08, mean rel: 2.963e-08
Triton LibDevice vs Double max abs: 2.501e-06, mean abs: 2.911e-08, max rel: 8.939e-08, mean rel: 2.963e-08
TileLang vs Double max abs: 2.501e-06, mean abs: 2.911e-08, max rel: 8.939e-08, mean rel: 2.963e-08
PyTorch vs Double max abs: 2.501e-06, mean abs: 2.911e-08, max rel: 8.939e-08, mean rel: 2.963e-08
Triton vs Double max abs: 2.876e-06, mean abs: 3.443e-08, max rel: 1.536e-07, mean rel: 3.503e-08
TileLang Fastmath vs Double max abs: 2.876e-06, mean abs: 3.443e-08, max rel: 1.536e-07, mean rel: 3.503e-08
CUDA Fast vs Double max abs: 2.876e-06, mean abs: 3.171e-08, max rel: 1.250e-07, mean rel: 3.211e-08
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