DMCompositeGetGlobalISs#
Gets the index sets for each composed object
Synopsis#
#include "petscdmcomposite.h"
PetscErrorCode DMCompositeGetGlobalISs(DM dm, IS *is[])
Collective on dm
Input Parameter#
dm - the packer object
Output Parameters#
is - the array of index sets
Notes#
The is entries should be destroyed with ISDestroy(), the is array should be freed with PetscFree()
These could be used to extract a subset of vector entries for a “multi-physics” preconditioner
Use DMCompositeGetLocalISs() for index sets in the packed local numbering, and DMCompositeGetISLocalToGlobalMappings() for to map local sub-DM (including ghost) indices to packed global indices.
Fortran Notes#
The output argument ‘is’ must be an allocated array of sufficient length, which can be learned using DMCompositeGetNumberDM().
See Also#
DMDestroy()
, DMCompositeAddDM()
, DMCreateGlobalVector()
,
DMCompositeGather()
, DMCompositeCreate()
, DMCompositeGetAccess()
, DMCompositeScatter()
,
DMCompositeGetLocalVectors()
, DMCompositeRestoreLocalVectors()
, DMCompositeGetEntries()
Level#
advanced
Location#
Examples#
src/snes/tutorials/ex28.c.html
src/snes/tutorials/ex73f90t.F90.html
Index of all DM routines
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Index of all manual pages