petsc-3.10.2 2018-10-09
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MatFactorSetSchurIS

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

Synopsis

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

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.

Concepts

See Also

MatGetFactor(), MatFactorGetSchurComplement(), MatFactorRestoreSchurComplement(), MatFactorCreateSchurComplement(), MatFactorSolveSchurComplement(),
MatFactorSolveSchurComplementTranspose(), MatFactorSolveSchurComplement()

Level

developer

Location

src/mat/interface/matrix.c

Implementations

MatFactorSetSchurIS_MUMPS in src/mat/impls/aij/mpi/mumps/mumps.c
MatFactorSetSchurIS_MKL_PARDISO in src/mat/impls/aij/seq/mkl_pardiso/mkl_pardiso.c

Index of all Mat routines
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Index of all manual pages