PETSc version 3.15.5

AOCreateMemoryScalable

Creates a memory scalable application ordering using two integer arrays.

Synopsis

#include "petscao.h"   
PetscErrorCode AOCreateMemoryScalable(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

Notes

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. Comparing with AOCreateBasic(), this routine trades memory with message communication.

Level

beginner

Location

src/vec/is/ao/impls/memscalable/aomemscalable.c
Index of all AO routines
Table of Contents for all manual pages
Index of all manual pages