KSPSetInitialGuessNonzero
Tells the iterative solver that the initial guess is nonzero; otherwise KSP assumes the initial guess is to be zero (and thus zeros it out before solving).
Synopsis
#include "petscksp.h"
PetscErrorCode PETSCKSP_DLLEXPORT KSPSetInitialGuessNonzero(KSP ksp,PetscTruth flg)
Collective on KSP
Input Parameters
Notes
If this is not called the X vector is zeroed in the call to KSPSolve().
Keywords
KSP, set, initial guess, nonzero
See Also
KSPGetInitialGuessNonzero(), KSPSetInitialGuessKnoll(), KSPGetInitialGuessKnoll()
Level:beginner
Location:src/ksp/ksp/interface/itfunc.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages
Examples
src/ksp/pc/examples/tutorials/ex1.c.html
src/ksp/pc/examples/tutorials/ex2.c.html
src/ksp/ksp/examples/tutorials/ex3.c.html
src/ksp/ksp/examples/tutorials/ex9.c.html
src/ksp/ksp/examples/tutorials/ex6f.F.html