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<BR> Sorry, I forgot the detailed information<BR>
IPOPT version: 3.3.3<BR>
My computer is i686 2.6.20-16-generic, ubuntu 7.10<BR><BR>
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From: greatzwz@hotmail.com<BR>To: greatzwz@hotmail.com<BR>Subject: Help on "Hessian Approximation" of my optimization problem<BR>Date: Wed, 6 Feb 2008 16:29:04 -0500<BR><BR>
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<FONT size=5>Hi, friends:</FONT><BR><FONT size=5> Sorry to bother you.</FONT><BR><FONT size=5> I have one problem regarding "Hessian Approximation" in IPOPT application.</FONT><BR><FONT size=5> In the main program, the option is configured as "app->Options()- SetStringValue("hessian_approximation","limited-memory")".</FONT><BR><FONT size=5> It is indicated in the menu, I do not have to implement "bool eval_h()", so I commented it out in my_program.cpp and my_program.hpp.</FONT><BR><FONT size=5> Then my program can be compiled successfully, however the resulted executable program is not working, the error message is</FONT><BR><FONT size=5> "Segmentation fault(core dumped)".</FONT><BR><FONT size=5></FONT> <BR><FONT size=5></FONT> <BR><FONT size=5> I thought maybe that I did not provide the hessian information</FONT><BR><FONT size=5>in the method "get_nlp_info(.... Index&nnz_h_lag...)". Thus I commented this parameter out in my_program.cpp and my_program.hpp correspondingly. Afterwards, I compiled the program. It still is successfully compiled. Now when I execute it, the error message is</FONT><BR><FONT size=5> "pure virtual method called</FONT><BR><FONT size=5> terminate called without an active exception"</FONT><BR><FONT size=5></FONT> <BR><FONT size=5> </FONT><BR><FONT size=5> I have searched the website, it seems all the methods I used did not include itself or other methods which are not defined previously.</FONT><BR><FONT size=5>Thus I do not know why the error indicates "pure virtual method called".</FONT><BR><FONT size=5></FONT> <BR><FONT size=5> If anybody can help, I would appreciate that.</FONT><BR><FONT size=5> Thank you so much.</FONT><BR><FONT size=5> &n
bsp; Weizhong Zhang</FONT><BR><FONT size=5></FONT> <BR><FONT size=5></FONT> <BR><FONT size=5> </FONT><BR><FONT size=5></FONT> <BR><FONT size=5></FONT> <BR><FONT size=5></FONT> <BR><BR><BR>> Subject: Welcome to the "Coin-ipopt" mailing list (Digest mode)<BR>> From: coin-ipopt-request@list.coin-or.org<BR>> To: greatzwz@hotmail.com<BR>> Date: Wed, 6 Feb 2008 16:09:16 -0500<BR>> <BR>> Welcome to the Coin-ipopt@list.coin-or.org mailing list!<BR>> <BR>> To post to this list, send your email to:<BR>> <BR>> coin-ipopt@list.coin-or.org<BR>> <BR>> General information about the mailing list is at:<BR>> <BR>> http://list.coin-or.org/mailman/listinfo/coin-ipopt<BR>> <BR>> If you ever want to unsubscribe or change your options (eg, switch to<BR>> or from digest mode, change your password, etc.), visit your<BR>> subscription page at:<BR>> <BR>> http://list.coin-or.org/mailman/options/coin-ipopt/greatzwz%40hotmail.com<BR>> <BR>> <BR>> You can also make such adjustments via email by sending a message to:<BR>> <BR>> Coin-ipopt-request@list.coin-or.org<BR>> <BR>> with the word `help' in the subject or body (don't include the<BR>> quotes), and you will get back a message with instructions.<BR>> <BR>> You must know your password to change your options (including changing<BR>> the password, itself) or to unsubscribe. It is:<BR>> <BR>> 8686<BR>> <BR>> Normally, Mailman will remind you of your list.coin-or.org mailing<BR>> list passwords once every month, although you can disable this if you<BR>> prefer. This reminder will also include instructions on how to<BR>> unsubscribe or change your account options. There is also a button on<BR>> your options page
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