PETSc version 3.15.5
KSPSetInitialGuessKnoll
Tells the iterative solver to use PCApply(pc,b,..) to compute the initial guess (The Knoll trick) 
Synopsis
#include "petscksp.h" 
#include "petscmat.h" 
PetscErrorCode  KSPSetInitialGuessKnoll(KSP ksp,PetscBool flg)
Logically Collective on ksp
Input Parameters
Developer Note: the Knoll trick is not currently implemented using the KSPGuess class
See Also
 KSPGetInitialGuessKnoll(), 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