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GPU performance optimization #398

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sshin23 opened this issue Jan 10, 2025 · 0 comments
Open

GPU performance optimization #398

sshin23 opened this issue Jan 10, 2025 · 0 comments

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@sshin23
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sshin23 commented Jan 10, 2025

I observed that broadcast tend to allocate less memory than map!. E.g.,

julia> @time X .= .+(X,X); @time map!(+, X, X, X);
  0.000074 seconds (33 allocations: 608 bytes)
  0.000121 seconds (64 allocations: 2.078 KiB)

Also, we should cache the spmv buffer to reduce the matmul time
https://github.com/JuliaGPU/CUDA.jl/blob/1389800a26078df16cc689ed5138f0691185ce61/lib/cusparse/generic.jl#L181-L189
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@sshin23