MatDenseHIPGetArrayRead#

Provides read-only access to the HIP buffer inside a dense matrix. The array must be restored with MatDenseHIPRestoreArrayRead() when no longer needed.

Synopsis#

#include "petscmat.h"  
PetscErrorCode MatDenseHIPGetArrayRead(Mat A, const PetscScalar **a)

Not Collective

Input Parameters#

  • A - the matrix

Output Parameters

  • array - the GPU array in column major order

Notes#

Data can be copied to the GPU due to operations done on the CPU. If you need write only access, use MatDenseHIPGetArrayWrite().

See Also#

MatDenseHIPGetArray(), MatDenseHIPRestoreArray(), MatDenseHIPRestoreArrayWrite(), MatDenseHIPGetArrayWrite(), MatDenseHIPRestoreArrayRead()

Level#

developer

Location#

src/mat/impls/dense/mpi/mpidense.c

Implementations#

MatDenseHIPGetArrayRead_MPIDenseHIP in src/mat/impls/dense/mpi/mpidense.c
MatDenseHIPGetArrayRead_SeqDenseHIP in src/mat/impls/dense/seq/hip/densehip.hip.c


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