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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="TaoSetMonitor"><H1>TaoSetMonitor</H1></A>
Sets an ADDITIONAL function that is to be used at every iteration of the solver to display the iteration's progress.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petsctao.h"
PetscErrorCode TaoSetMonitor(Tao tao, PetscErrorCode (*func)(Tao, void*), void *ctx,PetscErrorCode (*dest)(void**))
</PRE>
Logically 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> solver context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>mymonitor </B></TD><TD>- monitoring routine
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>mctx </B></TD><TD>- [optional] user-defined context for private data for the
monitor routine (may be NULL)
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Calling sequence of mymonitor</FONT></H3>
<pre>
int mymonitor(<A HREF="../Tao/Tao.html#Tao">Tao</A> tao,void *mctx)
</pre>
<P>
<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> solver context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>mctx </B></TD><TD>- [optional] monitoring context
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">Options Database Keys</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-tao_monitor </B></TD><TD>- sets <A HREF="../Tao/TaoDefaultMonitor.html#TaoDefaultMonitor">TaoDefaultMonitor</A>()
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-tao_smonitor </B></TD><TD>- sets short monitor
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-tao_cmonitor </B></TD><TD>- same as smonitor plus constraint norm
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-tao_view_solution </B></TD><TD>- view solution at each iteration
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-tao_view_gradient </B></TD><TD>- view gradient at each iteration
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-tao_view_separableobjective </B></TD><TD>- view separable objective function at each iteration
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-tao_cancelmonitors </B></TD><TD>- cancels all monitors that have been hardwired into a code by calls to <A HREF="../Tao/TaoSetMonitor.html#TaoSetMonitor">TaoSetMonitor</A>(), but does not cancel those set via the options database.
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
Several different monitoring routines may be set by calling
<A HREF="../Tao/TaoSetMonitor.html#TaoSetMonitor">TaoSetMonitor</A>() multiple times; all will be called in the
order in which they were set.
<P>
Fortran Notes: Only one monitor function may be set
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Tao/TaoDefaultMonitor.html#TaoDefaultMonitor">TaoDefaultMonitor</A>(), <A HREF="../Tao/TaoCancelMonitors.html#TaoCancelMonitors">TaoCancelMonitors</A>(), TaoSetDestroyRoutine()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/tao/interface/taosolver.c.html#TaoSetMonitor">src/tao/interface/taosolver.c</A>
<BR><A HREF="./index.html">Index of all Tao routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/tao/unconstrained/examples/tutorials/minsurf2.c.html">src/tao/unconstrained/examples/tutorials/minsurf2.c.html</A><BR>
<A HREF="../../../src/tao/unconstrained/examples/tutorials/eptorsion2f.F.html">src/tao/unconstrained/examples/tutorials/eptorsion2f.F.html</A><BR>
<A HREF="../../../src/tao/bound/examples/tutorials/jbearing2.c.html">src/tao/bound/examples/tutorials/jbearing2.c.html</A><BR>
<A HREF="../../../src/tao/leastsquares/examples/tutorials/chwirut2.c.html">src/tao/leastsquares/examples/tutorials/chwirut2.c.html</A><BR>
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