MatDenseCUDAGetArrayWrite#
Provides write access to the CUDA buffer inside a MATDENSECUDA matrix.
Synopsis#
#include "petscmat.h"
PetscErrorCode MatDenseCUDAGetArrayWrite(Mat A, PetscScalar **a)
Not Collective
Input Parameters#
A - the matrix
Output Parameters
array - the GPU array in column major order
Notes#
The data on the GPU may not be updated due to operations done on the CPU. If you need updated data, use MatDenseCUDAGetArray().
The array must be restored with MatDenseCUDARestoreArrayWrite() when no longer needed.
See Also#
MATDENSECUDA, MatDenseCUDAGetArray(), MatDenseCUDARestoreArray(), MatDenseCUDARestoreArrayWrite(), MatDenseCUDAGetArrayRead(), MatDenseCUDARestoreArrayRead()
Level#
developer
Location#
Implementations#
MatDenseCUDAGetArrayWrite_MPIDenseCUDA in src/mat/impls/dense/mpi/mpidense.c
MatDenseCUDAGetArrayWrite_SeqDenseCUDA in src/mat/impls/dense/seq/cuda/densecuda.cu
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