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Use __shfl_down for cuda affine interp backward #7

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jacobhinkle opened this issue Nov 20, 2018 · 0 comments
Open

Use __shfl_down for cuda affine interp backward #7

jacobhinkle opened this issue Nov 20, 2018 · 0 comments
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enhancement New feature or request

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@jacobhinkle
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cf. https://devblogs.nvidia.com/faster-parallel-reductions-kepler/

Shuffle intrinsics on nvidia gpus can dramatically speed up custom reductions. Currently the method i use has lots of thread synchronization so there is a lot of room for improvement probably. This should probably come after we start a benchmarking suite.
@jacobhinkle jacobhinkle added the enhancement New feature or request label Nov 20, 2018
@jacobhinkle jacobhinkle mentioned this issue Nov 20, 2018
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