petsc-3.9.4 2018-09-11
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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This marks the host data as out of date.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