ISColoringSetType — PETSc 3.25.1 documentation

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# ISColoringSetType

indicates if the coloring is for the local representation (including ghost points) or the global representation of a `Mat`

## Synopsis

    #include "petscis.h"
    PetscErrorCode ISColoringSetType(ISColoring coloring, ISColoringType type)

Collective

## Input Parameters

- coloring - the coloring object

- type - either `IS_COLORING_LOCAL` or `IS_COLORING_GLOBAL`

## Notes

`IS_COLORING_LOCAL` can lead to faster computations since parallel ghost point updates are not needed for each color

With `IS_COLORING_LOCAL` the coloring is in the numbering of the local vector, for `IS_COLORING_GLOBAL` it is in the numbering of the global vector

## See Also

`MatFDColoringCreate()`, `ISColoring`, `ISColoringType`, `ISColoringCreate()`, `IS_COLORING_LOCAL`, `IS_COLORING_GLOBAL`, `ISColoringGetType()`

## Level

intermediate

## 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