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# VecCUDARestoreArrayRead
Restore a CUDA device pointer previously acquired with `VecCUDAGetArrayRead()`. 
## Synopsis
```
#include <petscvec.h> 
PetscErrorCode VecCUDARestoreArrayRead(Vec v, const PetscScalar **a)
```
Not Collective; Asynchronous; No Fortran Support


## Input Parameters

- ***v -*** the vector
- ***a -*** the CUDA device pointer





## Note
This routine does not modify the corresponding array on the host in any way. The pointer is
invalid after this function returns.


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

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/seq/cupm/cuda/vecseqcupm.cu.html#VecCUDARestoreArrayRead">src/vec/vec/impls/seq/cupm/cuda/vecseqcupm.cu</A>

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


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/vec/vec/impls/seq/cupm/cuda/vecseqcupm.cu)


[Index of all Vec routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)  
