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flash-attention gradient calculation fail due to numerical error #4174

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hgl71964 opened this issue Jun 20, 2024 · 1 comment
Open

flash-attention gradient calculation fail due to numerical error #4174

hgl71964 opened this issue Jun 20, 2024 · 1 comment

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@hgl71964
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adding causal=False to the pytest case in python/tutorial/06-fused-attention.py causes numerical error when computing backward gradient

RTX4090, CUDA 12.4, triton 3.0.0 (107fed4), llvm (765206e050453018e861637a08a4520f29238074)
@hgl71964
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or is it because no one would actually back-prop when causal=False?

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