#include "petscmat.h" PetscErrorCode MatColoringCreate(Mat m,MatColoring *mcptr)Collective on MatColoring
| -mat_coloring_type | - the type of coloring algorithm used | |
| -mat_coloring_maxcolors | - the maximum number of relevant colors, all nodes not in a color are in maxcolors+1 | |
| -mat_coloring_distance | - compute a distance 1,2,... coloring. | |
| -mat_coloring_view | - print information about the coloring and the produced index sets | |
| -mat_coloring_test | - debugging option that prints all coloring incompatibilities | |
| -mat_is_coloring_test | - debugging option that throws an error if MatColoringApply() generates an incorrect iscoloring |
Notes: A distance one coloring is useful, for example, multi-color SOR. A distance two coloring is for the finite difference computation of Jacobians (see MatFDColoringCreate()).
Some coloring types only support distance two colorings