petsc-master 2014-11-26
Report Typos and Errors

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;

  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
                        seperately 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