petsc-3.9.4 2018-09-11
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VecCUDARestoreArrayWrite

 Restore a CUDA device pointer previously acquired with VecCUDAGetArrayWrite().

Synopsis

PETSC_EXTERN PetscErrorCode VecCUDARestoreArrayWrite(Vec v, PetscScalar **a)
Data on the host will be marked as out of date. Subsequent access of the data on the host side e.g. with VecGetArray() will incur a device to host data transfer.

Input Parameter

v - the vector
a - the CUDA device pointer. This pointer is invalid after VecCUDARestoreArrayWrite() returns.

Fortran note

This function is not currently available from Fortran.

See Also

VecCUDAGetArrayWrite(), VecCUDAGetArrayReadWrite(), VecCUDAGetArrayRead(), VecCUDAGetArrayWrite(), VecGetArray(), VecRestoreArray(), VecGetArrayRead()

Level

intermediate

Location

src/vec/vec/impls/seq/seqcuda/veccuda2.cu

Examples

src/snes/examples/tutorials/ex47cu.cu.html

Index of all Vec routines
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Index of all manual pages