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# MatDenseHIPPlaceArray
Allows one to replace the GPU array in a `MATDENSEHIP` matrix with an array provided by the user. This is useful to avoid copying an array into a matrix. 
## Synopsis
```
PetscErrorCode MatDenseHIPPlaceArray(Mat mat, const PetscScalar *array)
```
Not Collective


## Input Parameters

- ***mat   -*** the matrix
- ***array -*** the array in column major order





## Note
You can return to the original array with a call to `MatDenseHIPResetArray()`. The user is
responsible for freeing this array; it will not be freed when the matrix is destroyed. The
array must have been allocated with `hipMalloc()`.


## See Also
 `MATDENSEHIP`, `MatDenseHIPGetArray()`, `MatDenseHIPResetArray()`,
`MatDenseHIPReplaceArray()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/dense/mpi/cupm/hip/matmpidensehip.hip.cpp#MatDenseHIPPlaceArray">src/mat/impls/dense/mpi/cupm/hip/matmpidensehip.hip.cpp</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/mat/impls/dense/mpi/cupm/hip/matmpidensehip.hip.cpp)


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