petsc-master 2014-12-28
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PCFieldSplitGetSchurPre

For Schur complement fieldsplit, determine how the Schur complement will be preconditioned. See PCFieldSplitSetSchurPre() for details.

Synopsis

#include "petscpc.h" 
PetscErrorCode PCFieldSplitGetSchurPre(PC pc,PCFieldSplitSchurPreType *ptype,Mat *pre)
Logically Collective on PC

Input Parameters

pc -the preconditioner context

Output Parameters

ptype - which matrix to use for preconditioning the Schur complement: PC_FIELDSPLIT_SCHUR_PRE_A11, PC_FIELDSPLIT_SCHUR_PRE_SELF, PC_FIELDSPLIT_PRE_USER
userpre - matrix to use for preconditioning (with PC_FIELDSPLIT_PRE_USER), or NULL

See Also

PCFieldSplitSetSchurPre(), PCFieldSplitGetSubKSP(), PCFIELDSPLIT, PCFieldSplitSetFields(), PCFieldSplitSchurPreType, PCLSC

Level:intermediate
Location:
src/ksp/pc/impls/fieldsplit/fieldsplit.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages