# VecCUDARestoreArrayWrite
Restore a CUDA device pointer previously acquired with `VecCUDAGetArrayWrite()`. 
## Synopsis
```
#include "petscvec.h"   
PETSC_EXTERN PetscErrorCode VecCUDARestoreArrayWrite(Vec v, PetscScalar **a)
```
Not Collective; No Fortran Support


## Input Parameters

- ***v -*** the vector
- ***a -*** the CUDA device pointer.  This pointer is invalid after
`VecCUDARestoreArrayWrite()` returns.





## Note
Data on the host will be marked as out of date.  Subsequent access of
the data on the host side e.g. with `VecGetArray()` will incur a device
to host data transfer.


## See Also
 [](chapter_vectors), `Vec`, `VecCUDAGetArrayWrite()`, `VecCUDAGetArray()`, `VecCUDAGetArrayRead()`, `VecCUDAGetArrayWrite()`, `VecGetArray()`, `VecRestoreArray()`, `VecGetArrayRead()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/interface/rvector.c.html#VecCUDARestoreArrayWrite">src/vec/vec/interface/rvector.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex47cu.cu.html">src/snes/tutorials/ex47cu.cu.html</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/vec/vec/interface/rvector.c)


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