MatFDColoringSetValues

takes a matrix in compressed color format and enters the matrix into a PETSc Mat

Synopsis

#include "petscmat.h"  
PetscErrorCode MatFDColoringSetValues(Mat J, MatFDColoring coloring, const PetscScalar y[])

Collective

Input Parameters

• J - the sparse matrix

• coloring - created with MatFDColoringCreate() and a local coloring

• y - column major storage of matrix values with one color of values per column, the number of rows of y should match the number of local rows of J and the number of columns is the number of colors.

Notes

The matrix in compressed color format may come from an automatic differentiation code

The code will be slightly faster if MatFDColoringSetBlockSize(coloring,PETSC_DEFAULT,nc); is called immediately after creating the coloring

See Also

Matrices, Mat, MatFDColoringCreate(), ISColoring, ISColoringCreate(), ISColoringSetType(), IS_COLORING_LOCAL, MatFDColoringSetBlockSize()

Level

intermediate

Location

src/mat/impls/aij/mpi/fdmpiaij.c

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