petsc-3.5.0 2014-06-30
Report Typos and Errors

VecCreateGhost

Creates a parallel vector with ghost padding on each processor.

Synopsis

#include "petscvec.h"   
PetscErrorCode  VecCreateGhost(MPI_Comm comm,PetscInt n,PetscInt N,PetscInt nghost,const PetscInt ghosts[],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, these do not need to be in increasing order (sorted)

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

VecCreateSeq(), VecCreate(), VecDuplicate(), VecDuplicateVecs(), VecCreateMPI(),
VecGhostGetLocalForm(), VecGhostRestoreLocalForm(), VecGhostUpdateBegin(), VecCreateGhostWithArray(), VecCreateMPIWithArray(), VecGhostUpdateEnd(), VecCreateGhostBlock(), VecCreateGhostBlockWithArray(), VecMPISetGhost()

Level:advanced
Location:
src/vec/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/vec/examples/tutorials/ex9.c.html
src/vec/vec/examples/tutorials/ex9f.F.html
src/vec/vec/examples/tutorials/ex14f.F.html