MatDenseHIPGetArrayRead#

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

Synopsis#

PetscErrorCode MatDenseHIPGetArrayRead(Mat A, const PetscScalar **a)

Not Collective

Input Parameter#

  • A - the matrix

Output Parameter#

  • a - the GPU array in column major order

Note#

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

See Also#

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

Level#

developer

Location#

src/mat/impls/dense/mpi/cupm/hip/matmpidensehip.hip.cpp

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