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Reduce prefetch SM usage when using pipeline prefetching #2991

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Reduce prefetch SM usage when using pipeline prefetching #2991

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Commits on Aug 14, 2024

  1. Fix get_unique_indices_v2 registration 

    Differential Revision: D61294287
    @facebook-github-bot
    sarunya authored and facebook-github-bot committed Aug 14, 2024
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  2. Enable pipeline prefetching 

    Differential Revision: D60727327
    @facebook-github-bot
    sarunya authored and facebook-github-bot committed Aug 14, 2024
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Commits on Aug 15, 2024

  1. Reduce prefetch SM usage when using pipeline prefetching (pytorch#2991) 

    Summary:
Pull Request resolved: pytorch#2991

This diff limits the SM usage on `masked_index_put` and
`masked_index_get` when pipeline prefetching is used by using a small
grid size.  This is to reduce the interference of these kernels with
the kernels on the compute stream during prefetch.  The grid size is
currently set to 1/8 of the total number of SMs.  However, this number
has to be tuned.

Differential Revision: D61145930
    @sryap @facebook-github-bot
    sryap authored and facebook-github-bot committed Aug 15, 2024
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