VecCreateGhostWithArray#
Creates a parallel vector with ghost padding on each processor; the caller allocates the array space.
Synopsis#
#include "petscvec.h"
PetscErrorCode VecCreateGhostWithArray(MPI_Comm comm, PetscInt n, PetscInt N, PetscInt nghost, const PetscInt ghosts[], const PetscScalar array[], Vec *vv)
Collective
Input Parameters#
comm - the MPI communicator to use
n - local vector length
N - global vector length (or
PETSC_DETERMINEto have calculated ifnis given)nghost - number of local ghost points
ghosts - global indices of ghost points (or
NULLif not needed), these do not need to be in increasing order (sorted)array - the space to store the vector values (as long as n + nghost)
Output Parameter#
vv - the global vector representation (without ghost points as part of vector)
Notes#
Use VecGhostGetLocalForm() to access the local, ghosted representation
of the vector.
This also automatically sets the ISLocalToGlobalMapping() for this vector.
See Also#
Vectors and Parallel Data, Vec, VecType, VecCreate(), VecGhostGetLocalForm(), VecGhostRestoreLocalForm(),
VecCreateGhost(), VecCreateSeqWithArray(), VecCreateMPIWithArray(),
VecCreateGhostBlock(), VecCreateGhostBlockWithArray(), VecMPISetGhost()
Level#
advanced
Location#
Examples#
src/vec/vec/tutorials/ex9.c
src/vec/vec/tutorials/ex9f.F90
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages