petsc-3.4.5 2014-06-29
MatSchurComplementGetKSP
Gets the KSP object that is used to invert A in the Schur complement matrix S = C A^{-1} B
Synopsis
#include "petscksp.h"
PetscErrorCode MatSchurComplementGetKSP(Mat A, KSP *ksp)
Not Collective
Input Parameter
A -matrix created with MatCreateSchurComplement()
Output Parameter
ksp -the linear solver object
Options Database
-fieldsplit_0_XXX sets KSP and PC options for the A block solver inside the Schur complement -
See Also
MatSchurComplementSetKSP(), MatCreateSchurComplement(), MatCreateNormal(), MatMult(), MatCreate()
Level:intermediate
Location:src/ksp/ksp/utils/schurm.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages