ISColoringCreate#

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

Synopsis#

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

Collective

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 MPI rank, color numbers begin at 0, for each local node

  • mode - see PetscCopyMode for meaning of this flag.

Output Parameter#

  • iscoloring - the resulting coloring data structure

Options Database Key#

Notes#

By default sets coloring type to IS_COLORING_GLOBAL

See Also#

ISColoring, ISColoringValue, MatColoringCreate(), ISColoringView(), ISColoringDestroy(), ISColoringSetType()

Level#

advanced

Location#

src/vec/is/is/utils/iscoloring.c

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Index of all IS routines
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Index of all manual pages