VecCUDARestoreArrayRead#
Restore a CUDA device pointer previously acquired with VecCUDAGetArrayRead()
.
Synopsis#
#include "petscvec.h"
PETSC_EXTERN PetscErrorCode VecCUDARestoreArrayRead(Vec v, const PetscScalar **a)
Not Collective; No Fortran Support
Input Parameters#
v - the vector
a - the CUDA device pointer. This pointer is invalid after
VecCUDARestoreArrayRead()
returns.
Note#
If the data on the host side was previously up to date it will remain
so, i.e. data on both the device and the host is up to date.
Accessing data on the host side e.g. with VecGetArray()
does not
incur a device to host data transfer.
See Also#
Vectors and Parallel Data, Vec
, VecCUDAGetArrayRead()
, VecCUDAGetArrayWrite()
, VecCUDAGetArray()
, VecGetArray()
, VecRestoreArray()
, VecGetArrayRead()
Level#
intermediate
Location#
Examples#
src/snes/tutorials/ex47cu.cu.html
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages