MatFactorSetSchurIS#

Set indices corresponding to the Schur complement you wish to have computed

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatFactorSetSchurIS(Mat mat, IS is)

Collective

Input Parameters#

mat - the factored matrix
is - the index set defining the Schur indices (0-based)

Notes#

Call MatFactorSolveSchurComplement() or MatFactorSolveSchurComplementTranspose() after this call to solve a Schur complement system.

You can call MatFactorGetSchurComplement() or MatFactorCreateSchurComplement() after this call.

This functionality is only supported for MATSOLVERMUMPS and MATSOLVERMKL_PARDISO

See Also#

Matrices, Mat, MatGetFactor(), MatFactorGetSchurComplement(), MatFactorRestoreSchurComplement(), MatFactorCreateSchurComplement(), MatFactorSolveSchurComplement(), MatFactorSolveSchurComplementTranspose(), MatFactorSolveSchurComplement(), MATSOLVERMUMPS, MATSOLVERMKL_PARDISO

Level#

advanced

Location#

src/mat/interface/matrix.c

Implementations#

MatFactorSetSchurIS_MUMPS in src/mat/impls/aij/mpi/mumps/mumps.c

Index of all Mat routines
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