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ParticleContainer::RedistributeCPU for Pure SoA #3744

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ax3l opened this issue Feb 2, 2024 · 0 comments

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ax3l commented Feb 2, 2024 •

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For pure SoA particle layouts, we see on CPU that ParticleContainer::RedistributeCPU takes 8-9% longer than the legacy layout. ECP-WarpX/WarpX#4653

I think we can probably avoid this by optimizing the pack/unpack routines for the new layout a bit more:

check and avoid if we still use the legacy aos layout for some of the communication - ensure we perform nice and long array copies
use the new id validate/invalidate routines from Add ParticleIDWrapper::make_invalid() #3735

x-ref: #2878 #3299

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ax3l added the performance label

ax3l assigned atmyers

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Particle Container to Pure SoA Again ECP-WarpX/WarpX#4653

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ax3l mentioned this issue

convert to pure SoA particle containers quokka-astro/quokka#515

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