#include "petscvec.h" PETSC_EXTERN PetscErrorCode VecCUDARestoreArrayRead(Vec v, const PetscScalar **a)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.
|v||- the vector|
|a||- the CUDA device pointer. This pointer is invalid after VecCUDARestoreArrayRead() returns.|