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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
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<A NAME="KSPSetUseFischerGuess"><H1>KSPSetUseFischerGuess</H1></A>
Use the Paul Fischer algorithm, see <A HREF="../KSP/KSPFischerGuessCreate.html#KSPFischerGuessCreate">KSPFischerGuessCreate</A>()
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscksp.h"
PetscErrorCode KSPSetUseFischerGuess(KSP ksp,PetscInt model,PetscInt size)
</PRE>
Logically Collective on <A HREF="../KSP/KSP.html#KSP">KSP</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ksp </B></TD><TD>- the Krylov context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>model </B></TD><TD>- use model 1, model 2 or 0 to turn it off
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>size </B></TD><TD>- size of subspace used to generate initial guess
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Options Database</FONT></H3>
<DT><B>-ksp_fischer_guess <model,size> </B> -uses the Fischer initial guess generator for repeated linear solves
<br>
<P>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
<A HREF="../KSP/KSP.html#KSP">KSP</A>, set, options, prefix, database
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../KSP/KSPSetOptionsPrefix.html#KSPSetOptionsPrefix">KSPSetOptionsPrefix</A>(), <A HREF="../KSP/KSPAppendOptionsPrefix.html#KSPAppendOptionsPrefix">KSPAppendOptionsPrefix</A>(), <A HREF="../KSP/KSPSetUseFischerGuess.html#KSPSetUseFischerGuess">KSPSetUseFischerGuess</A>(), <A HREF="../KSP/KSPSetFischerGuess.html#KSPSetFischerGuess">KSPSetFischerGuess</A>(), KSPGetFischerInitialGuess()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/ksp/interface/itcl.c.html#KSPSetUseFischerGuess">src/ksp/ksp/interface/itcl.c</A>
<BR><A HREF="./index.html">Index of all KSP routines</A>
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