petsc-3.7.3 2016-08-01
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MatSchurComplementSetKSP

 Sets the KSP object that is used to invert A00 in the Schur complement matrix S = A11 - A10 ksp(A00,Ap00) A01

Synopsis

#include "petscksp.h" 
PetscErrorCode MatSchurComplementSetKSP(Mat S, KSP ksp)
Not Collective

Input Parameters

S - matrix created with MatCreateSchurComplement()
ksp - the linear solver object

Developer Notes

This is used in PCFieldSplit to reuse the 0-split KSP to implement ksp(A00,Ap00) in S.

See Also

MatSchurComplementGetKSP(), MatCreateSchurComplement(), MatCreateNormal(), MatMult(), MatCreate(), MATSCHURCOMPLEMENT

Level:developer
Location:src/ksp/ksp/utils/schurm.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages