petsc-3.15.0 2021-03-30
MatGetGhosts
Get the global index of all ghost nodes defined by the sparse matrix
Synopsis
#include "petscmat.h"
PetscErrorCode MatGetGhosts(Mat mat,PetscInt *nghosts,const PetscInt *ghosts[])
Collective on Mat
Input Parameter
Output Parameters
| nghosts | - number of ghosts (note for BAIJ matrices there is one ghost for each block)
|
| ghosts | - the global indices of the ghost points
|
Notes
the nghosts and ghosts are suitable to pass into VecCreateGhost()
Level
advanced
Location
src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages