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 integer arrays

  • 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

Index of all AO routines
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Index of all manual pages