petsc-3.14.6 2021-03-30
DMCompositeGetAccessArray
Allows one to access the individual packed vectors in their global representation.
Synopsis
#include "petscdmcomposite.h"
PetscErrorCode DMCompositeGetAccessArray(DM dm,Vec pvec,PetscInt nwanted,const PetscInt *wanted,Vec *vecs)
Collective on dm
Input Parameters
| dm | - the packer object
|
| pvec | - packed vector
|
| nwanted | - number of vectors wanted
|
| wanted | - sorted array of vectors wanted, or NULL to get all vectors
|
Output Parameters
| vecs | - array of requested global vectors (must be allocated)
|
Notes
Use DMCompositeRestoreAccessArray() to return the vectors when you no longer need them
See Also
DMCompositeGetAccess(), DMCompositeGetEntries(), DMCompositeScatter(), DMCompositeGather()
Level
advanced
Location
src/dm/impls/composite/pack.c
Examples
src/snes/tutorials/ex73f90t.F90.html
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages