MatSchurComplementGetKSP#
Gets the KSP object that is used to solve with A00 in the Schur complement matrix S = A11 - A10 ksp(A00,Ap00) A01
Synopsis#
#include "petscksp.h"
PetscErrorCode MatSchurComplementGetKSP(Mat S, KSP *ksp)
Not Collective
Input Parameter#
S - matrix obtained with
MatCreateSchurComplement()(or equivalent) and implementing the action of A11 - A10 ksp(A00,Ap00) A01
Output Parameter#
ksp - the linear solver object
Options Database Key#
-fieldsplit_<splitname_0>_XXX sets KSP and PC options for the 0- split solver inside the Schur complement used in
PCFIELDSPLIT; default <splitname_0> is 0.
See Also#
KSP: Linear System Solvers, Mat, MatSchurComplementSetKSP(), MatCreateSchurComplement(), MatCreateNormal(), MatMult(), MatCreate()
Level#
intermediate
Location#
src/ksp/ksp/utils/schurm/schurm.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages