MatSchurComplementGetKSP#
Gets the KSP object that is used to solve with A00 in the Schur complement matrix
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
Output Parameter#
ksp - the linear solver object
Options Database Key#
-fieldsplit_<splitname_0>_XXX - sets
KSPandPCoptions for the 0-split solver inside the Schur complement used inPCFIELDSPLIT; 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