petsc-3.8.4 2018-03-24
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VecCUSPRestoreArrayWrite

 Restore a CUSP device vector previously acquired with VecCUSPGetArrayWrite().

Synopsis

PETSC_EXTERN PetscErrorCode VecCUSPRestoreArrayWrite(Vec v, CUSPARRAY **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Data on the host will be marked as out of date.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 VecCUSPRestoreArrayWrite() returns.

Fortran note

This function is not currently available from Fortran.

See Also

VecCUSPGetArrayWrite(), VecCUSPGetArrayReadWrite(), VecCUSPGetArrayRead(), VecCUSPGetArrayWrite(), VecGetArray(), VecRestoreArray(), VecGetArrayRead()

Level:intermediate
Location:src/vec/vec/impls/seq/seqcusp/veccusp2.cu
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages

Examples

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