AOCreateMappingIS#

Creates an application mapping 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#

Note#

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.

See Also#

Application Orderings, Low-level Vector Communication, AOCreateBasic(), AOCreateMapping(), AODestroy()

Level#

beginner

Location#

src/vec/is/ao/impls/mapping/aomapping.c

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Index of all AO routines
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Index of all manual pages