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Add ability to disable NCCL at runtime #120

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oschuett opened this issue Aug 30, 2022 · 1 comment
Open

Add ability to disable NCCL at runtime #120

oschuett opened this issue Aug 30, 2022 · 1 comment

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@oschuett
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oschuett commented Aug 30, 2022 •
edited

I'd like to build COSMA with NCCL for CP2K. However, NCCL requires that every MPI rank has a dedicated GPU. Since this is not always the case, it would be great if there was a way to disable NCCL at runtime.

See also cp2k/cp2k#2202.
@oschuett oschuett mentioned this issue Sep 6, 2022
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@oschuett oschuett changed the title Added ability to disable NCCL at runtime Add ability to disable NCCL at runtime Sep 6, 2022
@oschuett
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Gentle ping :-)

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