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Ensure MG to have the same number of allreduce calls in mean_stddev for sparse matrix to avoid hanging #6141

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Ensure MG to have the same number of allreduce calls in mean_stddev for sparse matrix to avoid hanging #6141

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@lijinf2 lijinf2 commented Nov 22, 2024 •
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The hanging occurs when one GPU gets a sparse matrix of all zero values, while other GPUs get-zero values.

@lijinf2 lijinf2 requested a review from a team as a code owner November 22, 2024 01:23
@lijinf2 lijinf2 added improvement Improvement / enhancement to an existing function non-breaking Non-breaking change 2 - In Progress Currenty a work in progress labels Nov 22, 2024
@lijinf2 lijinf2 added the 3 - Ready for Review Ready for review by team label Nov 26, 2024
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