MatFDColoringSetUp#

Sets up the internal data structures of matrix coloring context for the later use.

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatFDColoringSetUp(Mat mat, ISColoring iscoloring, MatFDColoring color)

Collective

Input Parameters#

  • mat - the matrix containing the nonzero structure of the Jacobian

  • iscoloring - the coloring of the matrix; usually obtained with MatGetColoring() or DMCreateColoring()

  • color - the matrix coloring context

Notes#

When the coloring type is IS_COLORING_LOCAL the coloring is in the local ordering of the unknowns.

See Also#

Mat, MatFDColoring, MatFDColoringCreate(), MatFDColoringDestroy()

Level#

beginner

Location#

src/mat/matfd/fdmatrix.c

Examples#

src/mat/tutorials/ex16.c
src/snes/tutorials/ex14.c

Implementations#

MatFDColoringSetUp_MPIXAIJ in src/mat/impls/aij/mpi/fdmpiaij.c
MatFDColoringSetUp_SeqXAIJ in src/mat/impls/aij/seq/fdaij.c

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Index of all MatFD routines
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Index of all manual pages