MatDenseCUDAPlaceArray

Allows one to replace the GPU array in a MATDENSECUDA matrix with an array provided by the user. This is useful to avoid copying an array into a matrix.

Synopsis

PetscErrorCode MatDenseCUDAPlaceArray(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 MatDenseCUDAResetArray(). 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 cudaMalloc().

See Also

MATDENSECUDA, MatDenseCUDAGetArray(), MatDenseCUDAResetArray(), MatDenseCUDAReplaceArray()

Level

developer

Location

src/mat/impls/dense/mpi/cupm/cuda/matmpidensecuda.cu

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