petsc-3.7.5 2017-01-01
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VecCUDARestoreArrayReadWrite

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

Synopsis

PETSC_EXTERN PetscErrorCode VecCUDARestoreArrayReadWrite(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This marks the host data as out of date.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 VecCUDARestoreArrayReadWrite() returns.

Fortran note

This function is not currently available from Fortran.

See Also

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

Level:intermediate
Location:src/vec/vec/impls/seq/seqcuda/veccuda2.cu
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages