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Excessive GC pressure due to temporary array allocation #29

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huiyuxie opened this issue Sep 3, 2024 · 1 comment
Open

Excessive GC pressure due to temporary array allocation #29

huiyuxie opened this issue Sep 3, 2024 · 1 comment
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performance Improve performance

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huiyuxie commented Sep 3, 2024

GC performance is bad due to lots of temporary array allocation during the kernel launching phase (used as size arrays to configure GPU resources) and the kernel running phase (used as temporary arrays to avoid control flow divergence).

Consider creating a cache to store all these temporary arrays together before running the rhs! iteration.
@huiyuxie huiyuxie added the performance Improve performance label Sep 3, 2024
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xref https://cuda.juliagpu.org/stable/usage/memory/#Avoiding-GC-pressure

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