petsc-3.8.4 2018-03-24

AOCreateMappingIS

Creates a basic application ordering using two index sets.

Synopsis

#include "petscao.h" 
PetscErrorCode  AOCreateMappingIS(IS isapp, IS ispetsc, AO *aoout)

Input Parameters

	comm	- MPI communicator that is to share AO
	isapp	- index set that defines an ordering
	ispetsc	- index set that defines another ordering, maybe NULL for identity IS

Output Parameter

aoout -the new application ordering

Options Database Key

-ao_view : call AOView() at the conclusion of AOCreateMappingIS() -

Notes: the index sets isapp and ispetsc need NOT contain the all the integers 0 to N-1, that is there CAN be "holes" in the indices. Use AOCreateBasic() or AOCreateBasicIS() if they do not have holes for better performance.

Keywords