petsc-3.13.5 2020-09-01
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VecSetPinnedMemoryMin

Set the minimum data size for which pinned memory will be used for host (CPU) allocations.

Synopsis

#include "petscvec.h"   
PetscErrorCode VecSetPinnedMemoryMin(Vec v,size_t mbytes)
Logically Collective on Vec

Input Parameters

v - the vector
mbytes - minimum data size in bytes

Options Database Keys

-vec_pinned_memory_min <size> -minimum size (in bytes) for an allocation to use pinned memory on host. Note that this takes a PetscScalar, to accommodate large values; specifying -1 ensures that pinned memory will always be used.

See Also

VecGetPinnedMemoryMin()

Level

developer

Location

src/vec/vec/interface/vector.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages