MatDenseCUDARestoreArrayRead

Restore read-only access to the CUDA buffer inside a MATDENSECUDA matrix previously obtained with a call to MatDenseCUDAGetArrayRead().

Synopsis

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

Not Collective

Input Parameters

• A - the matrix

• a - 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(), MatDenseCUDAGetArrayRead()

Level

developer

Location

src/mat/impls/dense/mpi/cupm/cuda/matmpidensecuda.cu

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