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execute fibers row by row #34

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BenjaminW3 opened this issue Feb 16, 2015 · 1 comment · Fixed by #1718
Closed

execute fibers row by row #34

BenjaminW3 opened this issue Feb 16, 2015 · 1 comment · Fixed by #1718
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Backend:Boost.Fiber State:Wontfix Type:Enhancement

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@BenjaminW3
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By executing the fibers randomly we prevent memory prefetching.
Iterating X 1st, Y 2nd, Z 3rd (native C memory order) we would assist the prefetcher by using the expected default access pattern.
This could be extended to support arbitrary thread (and block) execution schemes.
@ax3l
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ax3l commented Feb 16, 2015

👍
also, alternative schemes such as increase x then y then z and then again x would be interesting in some cases (e.g. stencil operations in 3D).

@j-stephan j-stephan mentioned this issue Dec 17, 2020
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@j-stephan j-stephan mentioned this issue May 11, 2022
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Backend:Boost.Fiber State:Wontfix Type:Enhancement
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Drop Boost.fiber back-end j-stephan/alpaka
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