petsc-3.8.4 2018-03-24
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VecCUSPRestoreCUDAArrayReadWrite

 Restore a device vector previously acquired with VecCUSPGetCUDAArrayReadWrite().

Synopsis

PETSC_EXTERN PetscErrorCode VecCUSPRestoreCUDAArrayReadWrite(Vec v, PetscScalar **a)
This marks the host data as out of date. Subsequent access to the vector data on the host side with for instance VecGetArray() incurs a data transfer.

Input Parameter

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

Fortran note

This function is not currently available from Fortran.

See Also

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

Level:advanced
Location:src/vec/vec/impls/seq/seqcusp/veccusp2.cu
Index of all Vec routines
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Index of all manual pages