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FusionPersistentSoftmaxLocalShared failure #163

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naoyam opened this issue Apr 12, 2023 · 0 comments · Fixed by #185
Closed

FusionPersistentSoftmaxLocalShared failure #163

naoyam opened this issue Apr 12, 2023 · 0 comments · Fixed by #185
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naoyam commented Apr 12, 2023

On my Titan RTX, the FusionPersistentSoftmaxLocalShared_CUDA test fails:

C++ exception with description "(dynamic_smem_size) < (available_dynamic_smem_without_reconfiguration + additional_dynamic_smem_available_through_reconfiguration) INTERNAL ASSERT FAILED at "/home/nmaruyama/pytorch/debug3/nvfuser/csrc/executor.cpp":910, please report a bug to PyTorch. The total shared memory allocation is larger than available memory. Dynamic size: 66048. Available size: 49136. Configured smem size: 49152. Device limit size: 65536

It seems this issue started to happen at PR #148. Unclear why the PR could affect shared memory usage.
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Fix alias analysis NVIDIA/Fuser
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