VecCUDAPlaceArray#
Allows one to replace the GPU array in a vector with a GPU array provided by the user.
Synopsis#
#include <petscvec.h>
PetscErrorCode VecCUDAPlaceArray(Vec vin, const PetscScalar a[])
Logically Collective; Asynchronous; No Fortran Support
Input Parameters#
vec - the vector
array - the GPU array
Notes#
This routine is useful to avoid copying an array into a vector, though 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.
vec does not take ownership of array in any way. The user must free array themselves
but be careful not to do so before the vector has either been destroyed, had its original
array restored with VecCUDAResetArray() or permanently replaced with
VecCUDAReplaceArray().
See Also#
Vectors and Parallel Data, VecPlaceArray(), VecGetArray(), VecRestoreArray(), VecReplaceArray(),
VecResetArray(), VecCUDAResetArray(), VecCUDAReplaceArray()
Level#
advanced
Location#
src/vec/vec/impls/seq/cupm/cuda/vecseqcupm.cu
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages