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Some NCCL operations have failed or timed out. #20

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qiangtang2017 opened this issue Feb 20, 2025 · 1 comment
Open

Some NCCL operations have failed or timed out. #20

qiangtang2017 opened this issue Feb 20, 2025 · 1 comment

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@qiangtang2017
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[rank2]:[E220 01:25:08.728702337 ProcessGroupNCCL.cpp:681] [Rank 2] Some NCCL operations have failed or timed out. Due to the asynchronous nature of CUDA kernels, subsequent GPU operations might run on corrupted/incomplete data.
@qiangtang2017
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when I run first step , I meet this error at 416/962 steps。The same error occure when I run this “torchrun --nproc_per_node=8 --nnodes=1 …… ”

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