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Hang inside NCCL. #10312

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trivialfis opened this issue May 22, 2024 · 1 comment
Open

Hang inside NCCL. #10312

trivialfis opened this issue May 22, 2024 · 1 comment
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@trivialfis
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https://buildkite.com/xgboost/xgboost-ci-multi-gpu/builds/5027#018f9e76-44ae-4979-bd6d-c9aa5e0a617d

We ran into something like this before we moved into process-based multi-GPU training. The issue appears to be back now we have thread-based tests again.
@trivialfis trivialfis mentioned this issue May 22, 2024
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@trivialfis
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CUDA is not quite friendly to valgrind, need a different method to debug this.

@hcho3 hcho3 mentioned this issue May 23, 2024
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