VecCreateGhostWithArray

Creates a parallel vector with ghost padding on each processor; the caller allocates the array space.

Synopsis

#include "petscvec.h"   
int VecCreateGhostWithArray(MPI_Comm comm,int n,int N,int nghost,const int ghosts[],const PetscScalar array[],Vec *vv)
Collective on MPI_Comm

Input Parameters

comm - the MPI communicator to use
n - local vector length
N - global vector length (or PETSC_DECIDE to have calculated if n is given)
nghost - number of local ghost points
ghosts - global indices of ghost points (or PETSC_NULL if not needed)
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.

See Also

VecCreate(), VecGhostGetLocalForm(), VecGhostRestoreLocalForm(),
VecCreateGhost(), VecCreateSeqWithArray(), VecCreateMPIWithArray(), VecCreateGhostBlock(), VecCreateGhostBlockWithArray()

Level:advanced
Location:
src/vec/impls/mpi/pbvec.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/vec/examples/tutorials/ex9.c.html
src/vec/examples/tutorials/ex9f.F.html