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#

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#

src/vec/vec/interface/rvector.c

Examples#

src/snes/tutorials/ex47cu.cu.html


Edit on GitLab

Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages