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Sort particles #41

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dwillcox opened this issue Jan 12, 2021 · 1 comment

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dwillcox commented Jan 12, 2021

For the Cori GPU test profiling, particle to mesh is 65%, and mesh to particle is 17%.

If we did a sort of tree reduction for the atomics, by reducing in warps first, then to global memory, maybe we could greatly reduce this disparity.

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srichers commented Mar 19, 2021

changed name to "sort particles" - more efficient use of cache locality should be more important

srichers changed the title ~~Investigate more efficient atomics for Particle to Mesh~~ Sort particles

srichers assigned dwillcox

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