petsc-master 2019-09-22
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VecCUDAPlaceArray

Allows one to replace the GPU array in a vector with a GPU array provided by the user. This is useful to avoid copying an array into a vector.

Synopsis

#include "petscvec.h"   
PetscErrorCode VecCUDAPlaceArray(Vec vin,PetscScalar *a)
Not Collective

Input Parameters

vec - the vector
array - the GPU array

Notes

You can return to the original GPU array with a call to VecCUDAResetArray() It is not possible to use VecCUDAPlaceArray() and VecPlaceArray() at the same time on the same vector.

See Also

VecPlaceArray(), VecGetArray(), VecRestoreArray(), VecReplaceArray(), VecResetArray(), VecCUDAResetArray(), VecCUDAReplaceArray()

Level

developer

Location

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