[ROCm] Fix mx fp8 and fp4 code after scaling refactor changes.#163127
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jagadish-amd wants to merge 3 commits intopytorch:mainfrom
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[ROCm] Fix mx fp8 and fp4 code after scaling refactor changes.#163127jagadish-amd wants to merge 3 commits intopytorch:mainfrom
jagadish-amd wants to merge 3 commits intopytorch:mainfrom
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PR pytorch#151360 added mx fp8 and fp4 support on ROCm. However on recent upstream, scaling function in Blas.cpp along with test_matmul_cuda changes trigerred failures. This patch corrects is_blockwise_1x32_scaling function code and fixes minor bug in test_matmul_cuda. Testing result on gfx950 w/ ROCm7.0 PYTORCH_TEST_WITH_ROCM=1 python test/test_matmul_cuda.py -k test_blockwise -v Ran 452 tests in 22.698s OK passed 111 This is same as before. (when PR 151360 was merged) Signed-off-by: Jagadish Krishnamoorthy <jagadish.krishnamoorthy@amd.com>
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/163127
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jeffdaily
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Sep 17, 2025
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Merge startedYour change will be merged once all checks pass (ETA 0-4 Hours). Learn more about merging in the wiki. Questions? Feedback? Please reach out to the PyTorch DevX Team |
Signed-off-by: Jagadish Krishnamoorthy <jagadish.krishnamoorthy@amd.com>
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Merge failedReason: New commits were pushed while merging. Please rerun the merge command. Details for Dev Infra teamRaised by workflow job |
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Merge startedYour change will be merged once all checks pass (ETA 0-4 Hours). Learn more about merging in the wiki. Questions? Feedback? Please reach out to the PyTorch DevX Team |
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Merge failedReason: 1 mandatory check(s) failed. The first few are: Dig deeper by viewing the failures on hud |
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Merge startedYour change will be merged once all checks pass (ETA 0-4 Hours). Learn more about merging in the wiki. Questions? Feedback? Please reach out to the PyTorch DevX Team |
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…ch#163127) PR pytorch#151360 added mx fp8 and fp4 support on ROCm. 1. However, on recent upstream, scaling function in Blas.cpp along with test_matmul_cuda changes triggered failures. This patch corrects is_blockwise_1x32_scaling function code. 2. Fixes the m, n, k dimensions for ROCm mx case. 3. Modify FP4E2M1FN_LARGEST_POW2 (largest power of 2 representable in `torch.float4_e2m1fn_x2`) to 2. This resulted in higher SQNR value for mx fp4 test. Testing result on gfx950 w/ ROCm7.0 PYTORCH_TEST_WITH_ROCM=1 python test/test_matmul_cuda.py -k test_blockwise -v Ran 452 tests in 22.698s OK passed 111 This is same as before. (when PR 151360 was merged) Pull Request resolved: pytorch#163127 Approved by: https://github.com/jeffdaily Co-authored-by: Jeff Daily <jeff.daily@amd.com>
cleonard530
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Sep 22, 2025
…ch#163127) PR pytorch#151360 added mx fp8 and fp4 support on ROCm. 1. However, on recent upstream, scaling function in Blas.cpp along with test_matmul_cuda changes triggered failures. This patch corrects is_blockwise_1x32_scaling function code. 2. Fixes the m, n, k dimensions for ROCm mx case. 3. Modify FP4E2M1FN_LARGEST_POW2 (largest power of 2 representable in `torch.float4_e2m1fn_x2`) to 2. This resulted in higher SQNR value for mx fp4 test. Testing result on gfx950 w/ ROCm7.0 PYTORCH_TEST_WITH_ROCM=1 python test/test_matmul_cuda.py -k test_blockwise -v Ran 452 tests in 22.698s OK passed 111 This is same as before. (when PR 151360 was merged) Pull Request resolved: pytorch#163127 Approved by: https://github.com/jeffdaily Co-authored-by: Jeff Daily <jeff.daily@amd.com>
dsashidh
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Sep 26, 2025
…ch#163127) PR pytorch#151360 added mx fp8 and fp4 support on ROCm. 1. However, on recent upstream, scaling function in Blas.cpp along with test_matmul_cuda changes triggered failures. This patch corrects is_blockwise_1x32_scaling function code. 2. Fixes the m, n, k dimensions for ROCm mx case. 3. Modify FP4E2M1FN_LARGEST_POW2 (largest power of 2 representable in `torch.float4_e2m1fn_x2`) to 2. This resulted in higher SQNR value for mx fp4 test. Testing result on gfx950 w/ ROCm7.0 PYTORCH_TEST_WITH_ROCM=1 python test/test_matmul_cuda.py -k test_blockwise -v Ran 452 tests in 22.698s OK passed 111 This is same as before. (when PR 151360 was merged) Pull Request resolved: pytorch#163127 Approved by: https://github.com/jeffdaily Co-authored-by: Jeff Daily <jeff.daily@amd.com>
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PR #151360 added mx fp8 and fp4 support on ROCm.
However, on recent upstream, scaling function in Blas.cpp along with test_matmul_cuda changes triggered failures.
This patch corrects is_blockwise_1x32_scaling function code.
Fixes the m, n, k dimensions for ROCm mx case.
Modify FP4E2M1FN_LARGEST_POW2 (largest power of 2 representable in
torch.float4_e2m1fn_x2) to 2.This resulted in higher SQNR value for mx fp4 test.
Testing result on gfx950 w/ ROCm7.0
PYTORCH_TEST_WITH_ROCM=1 python test/test_matmul_cuda.py -k test_blockwise -v Ran 452 tests in 22.698s
OK passed 111
This is same as before. (when PR 151360 was merged)
cc @jeffdaily @sunway513 @jithunnair-amd @pruthvistony @ROCmSupport @dllehr-amd @jataylo @hongxiayang @naromero77amd