petsc-master 2018-06-22
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MatColoringSetDistance

Sets the distance of the coloring

Synopsis

#include "petscmat.h"  
PetscErrorCode MatColoringSetDistance(MatColoring mc,PetscInt dist)
Logically Collective on MatColoring

Input Parameter

mc - the MatColoring context dist - the distance the coloring should compute

Notes

The distance of the coloring denotes the minimum number of edges in the graph induced by the matrix any two vertices of the same color are. Distance-1 colorings are the classical coloring, where no two vertices of the same color are adjacent. distance-2 colorings are useful for the computation of Jacobians.

Keywords

Coloring, distance, Jacobian

See Also

MatColoringGetDistance(), MatColoringApply()

Level

beginner

Location

src/mat/color/interface/matcoloring.c
Index of all MatOrderings routines
Table of Contents for all manual pages
Index of all manual pages