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Use pinned memory to allocate host vectors smaller than 4KB #17607

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Use pinned memory to allocate host vectors smaller than 4KB #17607

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vuule Dec 17, 2024
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Merge branch 'branch-25.02' into pinned-alloc-threashold
vuule Dec 18, 2024
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4 changes: 2 additions & 2 deletions cpp/src/utilities/host_memory.cpp
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Expand Up @@ -290,8 +290,8 @@ size_t get_kernel_pinned_copy_threshold() { return kernel_pinned_copy_threshold(

CUDF_EXPORT auto& allocate_host_as_pinned_threshold()
{
// use pageable memory for all host allocations
static std::atomic<size_t> threshold = 0;
// Use pinned memory for all allocations smaller than this threshold
static std::atomic<size_t> threshold = 4096;
return threshold;
}

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