petsc-3.14.6 2021-03-30
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KSPGetInitialGuessKnoll

Determines whether the KSP solver is using the Knoll trick (using PCApply(pc,b,...) to compute the initial guess

Synopsis

#include "petscksp.h" 
#include "petscmat.h" 
PetscErrorCode  KSPGetInitialGuessKnoll(KSP ksp,PetscBool  *flag)
Not Collective

Input Parameter

ksp - iterative context obtained from KSPCreate()

Output Parameter

flag - PETSC_TRUE if using Knoll trick, else PETSC_FALSE

See Also

KSPSetInitialGuessKnoll(), KSPSetInitialGuessNonzero(), KSPGetInitialGuessNonzero(), KSP

Level

advanced

Location

src/ksp/ksp/interface/itfunc.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages