Add logic for UVM prefetch #1420
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rfalgout
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Nov 6, 2025
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I don't understand the implications of doing this, but I'll leave that to you and Rui Peng to think about. It looks good to me otherwise. Thanks!
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Thanks, Rob! For reference, I'm mimicking what umpire does: https://github.com/LLNL/Umpire/blob/30433c15454f019a338b541472690bf188433cda/src/umpire/op/CudaMemPrefetchOperation.cpp#L32-L40 |
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@liruipeng Could you take a look at this PR? |
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Run UVM prefetch only when the operating system and the NVIDIA card both allow it (and hypre is configured with unified memory support)
See #1392 (comment)