Comments (2)
Got it! As always, thanks for your help, @omlins!
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PS CPU implementation for small problems is currently missing a lot of optimisations as e.g. optimizations for simd. As noted in an earlier message to you, a LoopVectorization.jl backend is on the roadmap to tackle this. So I would right now just not care about the performance of CPU implementation for small problems until we have this new backend.
The current PS CPU implementation does quite well for large problems. If you increase the problem size in both of your codes, then at some point the performance should in general become similar...
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from parallelstencil.jl.