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

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages