MatDenseCUDAGetArrayRead#
Provides read-only access to the CUDA buffer inside a MATDENSECUDA
matrix. The array must be restored with MatDenseCUDARestoreArrayRead()
when no longer needed.
Synopsis#
#include "petscmat.h"
PetscErrorCode MatDenseCUDAGetArrayRead(Mat A, const 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()
.
See Also#
MATDENSECUDA
, MatDenseCUDAGetArray()
, MatDenseCUDARestoreArray()
, MatDenseCUDARestoreArrayWrite()
, MatDenseCUDAGetArrayWrite()
, MatDenseCUDARestoreArrayRead()
Level#
developer
Location#
Implementations#
MatDenseCUDAGetArrayRead_MPIDenseCUDA in src/mat/impls/dense/mpi/mpidense.c
MatDenseCUDAGetArrayRead_SeqDenseCUDA in src/mat/impls/dense/seq/cuda/densecuda.cu
Index of all Mat routines
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Index of all manual pages