AOCreateMemoryScalableIS

Creates a memory scalable application ordering using two index sets.

Synopsis

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

Collective

Input Parameters

• isapp - index set that defines an ordering

• ispetsc - index set that defines another ordering (may be NULL to use the natural ordering)

Output Parameter

• aoout - the new application ordering

Notes

The index sets isapp and ispetsc must contain the all the integers 0 to napp-1 (where napp is the length of the index sets) with no duplicates; that is there cannot be any “holes”.

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

See Also

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

Level

beginner

Location

src/vec/is/ao/impls/memscalable/aomemscalable.c

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