MatDenseHIPReplaceArray — PETSc 3.24.5 documentation

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# MatDenseHIPReplaceArray

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 MatDenseHIPReplaceArray(Mat mat, const PetscScalar *array)

Not Collective

## Input Parameters

- mat - the matrix

- array - the array in column major order

## Note

Adding `const` to `array` was an oversight, see notes in `VecPlaceArray()`.

This permanently replaces the GPU array and frees the memory associated with the old GPU array. The memory passed in CANNOT be freed by the user. It will be freed when the matrix is destroyed. The array should respect the matrix leading dimension.

## See Also

`MatDenseHIPGetArray()`, `MatDenseHIPPlaceArray()`, `MatDenseHIPResetArray()`

## Level

developer

## Location

src/mat/impls/dense/mpi/cupm/hip/matmpidensehip.hip.cpp

Index of all Mat routines
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Index of all manual pages