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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
<div id="bugreport" align=right><a href="mailto:petsc-maint@mcs.anl.gov?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: petsc-3.10.3 v3.10.3 docs/manualpages/Tao/TaoDefaultGMonitor.html "><small>Report Typos and Errors</small></a></div>
<A NAME="TaoDefaultGMonitor"><H1>TaoDefaultGMonitor</H1></A>
Default routine for monitoring progress of the <A HREF="../Tao/Tao.html#Tao">Tao</A> solvers (default) with extra detail on the globalization method. This monitor prints the function value and gradient norm at each iteration, as well as the step size and trust radius. Note that the step size and trust radius may be the same for some algorithms. It can be turned on from the command line using the -tao_gmonitor option
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petsctao.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Tao/TaoDefaultGMonitor.html#TaoDefaultGMonitor">TaoDefaultGMonitor</A>(<A HREF="../Tao/Tao.html#Tao">Tao</A> tao, void *ctx)
</PRE>
Collective on <A HREF="../Tao/Tao.html#Tao">Tao</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>tao </B></TD><TD>- the <A HREF="../Tao/Tao.html#Tao">Tao</A> context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ctx </B></TD><TD>- <A HREF="../Viewer/PetscViewer.html#PetscViewer">PetscViewer</A> context or NULL
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Options Database Keys</FONT></H3>
<DT><B>-tao_monitor</B> -
<br>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Tao/TaoDefaultSMonitor.html#TaoDefaultSMonitor">TaoDefaultSMonitor</A>(), <A HREF="../Tao/TaoSetMonitor.html#TaoSetMonitor">TaoSetMonitor</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>advanced<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/tao/interface/taosolver.c.html#TaoDefaultGMonitor">src/tao/interface/taosolver.c</A>
<BR><A HREF="./index.html">Index of all Tao routines</A>
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