AOCreateBasic

Creates a basic application ordering using two integer arrays.

Synopsis

#include "petscao.h"   
PetscErrorCode AOCreateBasic(MPI_Comm comm, PetscInt napp, const PetscInt myapp[], const PetscInt mypetsc[], AO *aoout)

Collective

Input Parameters

• comm - MPI communicator that is to share AO

• napp - size of myapp and mypetsc

• myapp - integer array that defines an ordering

• mypetsc - integer array that defines another ordering (may be NULL to indicate the natural ordering, that is 0,1,2,3,…)

Output Parameter

• aoout - the new application ordering

Note

The arrays myapp and mypetsc must contain the all the integers 0 to napp-1 with no duplicates; that is there cannot be any “holes” in the indices. Use AOCreateMapping() or AOCreateMappingIS() if you wish to have “holes” in the indices.

See Also

Application Orderings, Low-level Vector Communication, AO, AOCreateBasicIS(), AODestroy(), AOPetscToApplication(), AOApplicationToPetsc()

Level

beginner

Location

src/vec/is/ao/impls/basic/aobasic.c

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