petsc-3.8.4 2018-03-24

MatFactorSolveSchurComplement

Solve the Schur complement system computed during the factorization step

#include "petscmat.h" 
PetscErrorCode MatFactorSolveSchurComplement(Mat F, Vec rhs, Vec sol)

Logically Collective on Mat

	F	- the factored matrix obtained by calling MatGetFactor()
	rhs	- location where the right hand side of the Schur complement system is stored
	sol	- location where the solution of the Schur complement system has to be returned

The sizes of the vectors should match the size of the Schur complement

Must be called after MatFactorSetSchurIS()