petsc-3.8.4 2018-03-24

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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
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages