petsc-3.5.1 2014-07-24
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ISColoringCreate

Generates an ISColoring context from lists (provided by each processor) of colors for each node.

Synopsis

#include "petscis.h"  
PetscErrorCode  ISColoringCreate(MPI_Comm comm,PetscInt ncolors,PetscInt n,const ISColoringValue colors[],ISColoring *iscoloring)
Collective on MPI_Comm

Input Parameters

comm - communicator for the processors creating the coloring
ncolors - max color value
n - number of nodes on this processor
colors - array containing the colors for this processor, color numbers begin at 0. In C/C++ this array must have been obtained with PetscMalloc() and should NOT be freed (The ISColoringDestroy() will free it).

Output Parameter

iscoloring -the resulting coloring data structure

Options Database Key

-is_coloring_view -Activates ISColoringView()

Notes: By default sets coloring type to IS_COLORING_GLOBAL

See Also

MatColoringCreate(), ISColoringView(), ISColoringDestroy(), ISColoringSetType()

Level:advanced
Location:
src/vec/is/is/utils/iscoloring.c
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/snes/examples/tutorials/ex5s.c.html