petsc-3.7.1 2016-05-15
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# ISColoringType

determines if the coloring is for the entire parallel grid/graph/matrix or for just the local ghosted portion

### Synopsis

    typedef enum {IS_COLORING_GLOBAL,IS_COLORING_GHOSTED} ISColoringType;

Many br

      IS_COLORING_GLOBAL - does not include the colors for ghost points, this is used when the function

                           is called synchronously in parallel. This requires generating a "parallel coloring".

      IS_COLORING_GHOSTED - includes colors for ghost points, this is used when the function can be called

                            separately on individual processes with the ghost points already filled in. Does not

                            require a "parallel coloring", rather each process colors its local + ghost part.

                            Using this can result in much less parallel communication. In the paradigm of

                            DMGetLocalVector() and DMGetGlobalVector() this could be called IS_COLORING_LOCAL

### See Also

DMCreateColoring()

Level:beginner
Location:src/vec/is/is/../../../../include/petscis.h
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages