KSPSetInitialGuessKnoll#
Tells the iterative solver to use PCApply() on the right hand side vector to compute the initial guess (The Knoll trick)
Synopsis#
#include "petscksp.h" 
#include "petscmat.h" 
PetscErrorCode KSPSetInitialGuessKnoll(KSP ksp, PetscBool flg)
Logically Collective
Input Parameters#
- ksp - iterative solver obtained from - KSPCreate()
- flg - - PETSC_TRUEor- PETSC_FALSE
Developer Note#
The Knoll trick is not currently implemented using the KSPGuess class
See Also#
KSP: Linear System Solvers, 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