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<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>In order for Ipopt to exit with the “Solved to acceptable level” message,
the tolerance from acceptable_tol as well as all the other acceptable_*_tol
options (see <A
style='href: "http://www.coin-or.org/Ipopt/documentation/node41.html#SECTION000112070000000000000"'
href="http://www.coin-or.org/Ipopt/documentation/node41.html#SECTION000112070000000000000"><FONT
color=#0066cc>http://www.coin-or.org/Ipopt/documentation/node41.html#SECTION000112070000000000000</FONT></A>)
have to be satisfied for acceptable_iter iterations in a row. You can try
reducing acceptable_iter, and/or loosening some of the acceptable_*_tol
options.</DIV>
<DIV> </DIV>
<DIV>-Tony</DIV>
<DIV> </DIV>
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<DIV> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A
title=steffi.naumann@iosb-ast.fraunhofer.de
href="mailto:steffi.naumann@iosb-ast.fraunhofer.de">Naumann, Steffi</A> </DIV>
<DIV><B>Sent:</B> Wednesday, December 18, 2013 5:25 AM</DIV>
<DIV><B>To:</B> <A title=ipopt@list.coin-or.org
href="mailto:ipopt@list.coin-or.org">ipopt@list.coin-or.org</A> </DIV>
<DIV><B>Subject:</B> [Ipopt] acceptable tolerance options</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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<P class=MsoNormal>Hi,<o:p></o:p></P>
<P class=MsoNormal><o:p></o:p> </P>
<P class=MsoNormal><SPAN lang=EN-US>I’m new with Ipopt and I’m trying to find
good termination criteria for my optimization problem. In some cases the problem
got solved with success. In other cases solving the problem exceeds maximum
CPU-time, but the results seem to be adequate. In these cases I tried to
introduce the “acceptable tolerance” options. When I set the acceptable
tolerances to values which get fulfilled in the optimization-run without
acceptable tolerance options, the solver does not stop with the considered
“Solved to acceptable level” statement. Instead of that it exceeds again the
time-limit and ends with much worse results.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>Is it possible that the acceptable tolerance
options have an influence to the result of the
optimization?<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>Thanks<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US>Steffi<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US style="FONT-SIZE: 10pt">M.Sc. Steffi Naumann
(geb. Pflugradt)<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US
style="FONT-SIZE: 10pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US style="FONT-SIZE: 10pt">Institutsteil
Angewandte Systemtechnik (AST) des Fraunho</SPAN><SPAN
style="FONT-SIZE: 10pt">fer IOSB<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Am Vogelherd
50<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">D-98693
Ilmenau<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt">Tel.:
+49 3677 461-104
<BR>Fax: +49
3677 461-100<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt">E-Mail: <U><SPAN
style="COLOR: blue"><A
href="mailto:steffi.naumann@iosb-ast.fraunhofer.de">steffi.naumann@iosb-ast.fraunhofer.de</A></SPAN></U><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Internet: <A
href="http://www.iosb-ast.fraunhofer.de/"><SPAN
style="COLOR: blue">www.iosb-ast.fraunhofer.de</SPAN></A><o:p></o:p></SPAN></P>
<P class=MsoNormal><o:p></o:p> </P></DIV>
<P>
<HR>
_______________________________________________<BR>Ipopt mailing
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