ISPartitioningToNumbering

Takes an IS' that represents a partitioning (the MPI rank that each local entry belongs to) and on each MPI process generates an IS` that contains a new global node number in the new ordering for each entry

Synopsis

#include "petscis.h"  
PetscErrorCode ISPartitioningToNumbering(IS part, IS *is)

Collective

Input Parameter

• partitioning - a partitioning as generated by MatPartitioningApply() or MatPartitioningApplyND()

Output Parameter

• is - on each processor the index set that defines the global numbers (in the new numbering) for all the nodes currently (before the partitioning) on that processor

Note

The resulting IS tells where each local entry is mapped to in a new global ordering

See Also

Low-level Vector Communication, IS, MatPartitioningCreate(), AOCreateBasic(), ISPartitioningCount()

Level

advanced

Location

src/vec/is/is/utils/iscoloring.c

Examples

src/ksp/ksp/tutorials/ex64.c

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Index of all IS routines
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Index of all manual pages