8000 CUDA error: an Illegal memory access was encountered · Issue #2957 · pytorch/torchrec · GitHub
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CUDA error: an Illegal memory access was encountered #2957

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ali-fani-sd opened this issue May 7, 2025 · 0 comments
Open

CUDA error: an Illegal memory access was encountered #2957

ali-fani-sd opened this issue May 7, 2025 · 0 comments

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@ali-fani-sd
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We are using DLRM model for personalization and we are getting CUDA error. By setting up CUDA_LAUNCH_BLOCKING flag and enabling cuda core dump, it pointed to two files where the issue might be happening
1: torchrec/distributed/embeddingbag.py: input_dist
2:torchrec/sparse/jagged_tensor.py: permute()

Some of our jaggedtensors are using weights, so when we debug the Jagged_tenosor.py we see mismatch in values(permuted length per key sum) and weights. Do you think that could be the root cause of CUDA error.
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