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