petsc-3.7.1 2016-05-15
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DMCompositeGetGlobalISs

Gets the index sets for each composed object

Synopsis

#include "petscdmcomposite.h"  
PetscErrorCode  DMCompositeGetGlobalISs(DM dm,IS *is[])
Collective on DMComposite Many br

Input Parameter

dm -the packer object Many br

Output Parameters

is -the array of index sets Many br

Many br

Notes

The is entries should be destroyed with ISDestroy(), the is array should be freed with PetscFree() Many br

These could be used to extract a subset of vector entries for a "multi-physics" preconditioner Many br

Use DMCompositeGetLocalISs() for index sets in the packed local numbering, and Many brDMCompositeGetISLocalToGlobalMappings() for to map local sub-DM (including ghost) indices to packed global Many brindices. Many br

Fortran Notes

The output argument 'is' must be an allocated array of sufficient length, which can be learned using DMCompositeGetNumberDM(). Many br

See Also

DMDestroy(), DMCompositeAddDM(), DMCreateGlobalVector(),
DMCompositeGather(), DMCompositeCreate(), DMCompositeGetAccess(), DMCompositeScatter(), Many brDMCompositeGetLocalVectors(), DMCompositeRestoreLocalVectors(),DMCompositeGetEntries() Many br

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

Examples

src/snes/examples/tutorials/ex28.c.html