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<TITLE>KSPTrueMonitor</TITLE>
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<A NAME="KSPTrueMonitor"><H1>KSPTrueMonitor</H1></A>
Prints the true residual norm as well as the preconditioned residual norm at each iteration of an iterative solver.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscksp.h"
int KSPTrueMonitor(KSP ksp,int n,PetscReal rnorm,void *dummy)
</PRE>
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>- iterative context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>n </B></TD><TD>- iteration number
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>rnorm </B></TD><TD>- 2-norm (preconditioned) residual value (may be estimated).
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>dummy </B></TD><TD>- unused monitor context
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Options Database Key</FONT></H3>
<DT><B>-ksp_truemonitor </B> -Activates <A HREF="../KSP/KSPTrueMonitor.html#KSPTrueMonitor">KSPTrueMonitor</A>()
<br>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
When using right preconditioning, these values are equivalent.
<P>
When using either ICC or ILU preconditioners in BlockSolve95
(via MATMPIROWBS matrix format), then use this monitor will
print both the residual norm associated with the original
(unscaled) matrix.
<P>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
<A HREF="../KSP/KSP.html#KSP">KSP</A>, default, monitor, residual
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../KSP/KSPSetMonitor.html#KSPSetMonitor">KSPSetMonitor</A>(), <A HREF="../KSP/KSPDefaultMonitor.html#KSPDefaultMonitor">KSPDefaultMonitor</A>(), <A HREF="../KSP/KSPLGMonitorCreate.html#KSPLGMonitorCreate">KSPLGMonitorCreate</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/sles/ksp/interface/iterativ.c.html#KSPTrueMonitor">src/sles/ksp/interface/iterativ.c</A>
<BR><A HREF="./index.html">Index of all KSP routines</A>
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