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(), MATSOLVERMUMPS, MATSOLVERMKL_PARDISO
Level#
advanced
Location#
Examples#
Implementations#
MatFactorSetSchurIS_MUMPS() in src/mat/impls/aij/mpi/mumps/impl/imumps.c
MatFactorSetSchurIS_MKL_PARDISO() in src/mat/impls/aij/seq/mkl_pardiso/mkl_pardiso.c
Index of all Mat routines
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