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The recommended workspace size for Hopper+ is 32 MiB. Increasing the workspace size from 4 MiB to 32 MiB improves matmul performance for smaller matrices on H100.

@tbensonatl tbensonatl self-assigned this Jan 4, 2024
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@cliffburdick
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@cliffburdick cliffburdick merged commit 141df30 into main Jan 5, 2024
@cliffburdick cliffburdick deleted the perf/increase-cublaslt-workspace-size-on-hopper branch January 5, 2024 04:56
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3 participants