petsc-3.9.2 2018-05-20
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DMCompositeGetLocalAccessArray

Allows one to access the individual packed vectors in their local representation.

Synopsis

#include "petscdmcomposite.h"  
PetscErrorCode  DMCompositeGetLocalAccessArray(DM dm,Vec pvec,PetscInt nwanted,const PetscInt *wanted,Vec *vecs)
Collective on DMComposite.

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 local vectors (must be allocated)

Notes: Use DMCompositeRestoreLocalAccessArray() to return the vectors when you no longer need them.

See Also

DMCompositeRestoreLocalAccessArray(), DMCompositeGetAccess(),
DMCompositeGetEntries(), DMCompositeScatter(), DMCompositeGather()

Level

advanced

Location

src/dm/impls/composite/pack.c
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages