ISBuildTwoSided

Takes an IS that describes where each element will be mapped globally over all ranks. Generates an IS that contains new numbers from remote or local on the IS.

Synopsis

#include "petscis.h"  
PetscErrorCode ISBuildTwoSided(IS ito, IS toindx, IS *rows)

Collective

Input Parameters

• ito - an IS describes where each entry will be mapped. Negative target rank will be ignored

• toindx - an IS describes what indices should send. NULL means sending natural numbering

Output Parameter

• rows - contains new numbers from remote or local

Developer Note

This manual page is incomprehensible and still needs to be fixed

See Also

Low-level Vector Communication, IS, MatPartitioningCreate(), ISPartitioningToNumbering(), 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