petsc-3.14.6 2021-03-30
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.
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