PETSc version 3.17.5
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,const 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.
`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
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