add PyTorch MG style group gemm reference utils #1979
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🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/ao/1979
Note: Links to docs will display an error until the docs builds have been completed. ❌ 1 New FailureAs of commit b5fa626 with merge base 3766ed7 ( This comment was automatically generated by Dr. CI and updates every 15 minutes. |
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lessw2020
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topic: not user facing
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LGTM, will leave approval for @vkuzo |
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This PR adds a single reference file for computing forward and backward (dx, dw) results for MG style group gemms.
It uses PyTorch directly via manual looping and PyTorch Autograd to compute reference values to be used in verifying other (Triton, torch.compile) group Gemm results.
The idea here is for both fp8 and bf16 group gemms to use the same reference generation to ensure consistent unit testing.