8000 __shfl_up_sync mask · Issue #2339 · catboost/catboost · GitHub
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__shfl_up_sync mask #2339

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hliuca opened this issue Apr 1, 2023 · 0 comments
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__shfl_up_sync mask #2339

hliuca opened this issue Apr 1, 2023 · 0 comments
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@hliuca
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hliuca commented Apr 1, 2023

In ./methods/kernel/linear_solver.cu, I see the masks are 0xFFFFFF.

sum = __shfl_sync(0xFFFFFF, sum, 0, logicalWarpSize);

Is this how the algorithm is designed? Or it should be 0xFFFFFFFF. Thanks.
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@andrey-khropov @Evgueni-Petrov-aka-espetrov @hliuca
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