[Ipopt] Ipopt Digest, Vol 38, Issue 8
ZhangWeizhong
greatzwz at hotmail.com
Tue Feb 26 14:08:32 EST 2008
hI, all: Now the problem is " Invalid number in NLP function or derivative detected" And number of iteration is "0" Can anyone give me any suggestions? Thank you. Weizhong Zhangweizhong at RobotLab:~/Desktop/Ipopt/examples/DmocExnew$ ./dmoc_example ******************************************************************************This program contains Ipopt, a library for large-scale nonlinear optimization. Ipopt is released as open source code under the Common Public License (CPL). For more information visit http://projects.coin-or.org/Ipopt******************************************************************************Number of nonzeros in equality constraint Jacobian...: 1000Number of nonzeros in inequality constraint Jacobian.: 0Number of nonzeros in Lagrangian Hessian.............: 0Number of Iterations....: 0Number of objective function evaluations = 0Number of objective gradient evaluations = 1Number of equality constraint evaluations = 0Number of inequality constraint evaluations = 0Number of equality constraint Jacobian evaluations = 1Number of inequality constraint Jacobian evaluations = 0Number of Lagrangian Hessian evaluations = 0Total CPU secs in IPOPT (w/o function evaluations) = 0.000Total CPU secs in NLP function evaluations = -0.000EXIT: Invalid number in NLP function or derivative detected.Solution of the primal variables, xx[0] = 1.000000e+01x[1] = 0.000000e+00x[120] = 1.000000e+04x[150] = 1.000000e+00Objective valuef(x*) = 1.029604e+07Final value of the constraints:g(0) = 0.000000e+00g(103) = -4.000000e-02*** The problem FAILED!> From: ipopt-request at list.coin-or.org> Subject: Ipopt Digest, Vol 38, Issue 8> To: ipopt at list.coin-or.org> Date: Wed, 13 Feb 2008 12:00:03 -0500> > Send Ipopt mailing list submissions to> ipopt at list.coin-or.org> > To subscribe or unsubscribe via the World Wide Web, visit> http://list.coin-or.org/mailman/listinfo/ipopt>
or, via email, send a message with subject or body 'help' to> ipopt-request at list.coin-or.org> > You can reach the person managing the list at> ipopt-owner at list.coin-or.org> > When replying, please edit your Subject line so it is more specific> than "Re: Contents of Ipopt digest..."> > > Today's Topics:> > 1. Re: Ipopt Digest, Vol 38, Issue 6 (ZhangWeizhong)> > > ----------------------------------------------------------------------> > Message: 1> Date: Tue, 12 Feb 2008 17:25:35 -0500> From: ZhangWeizhong <greatzwz at hotmail.com>> Subject: Re: [Ipopt] Ipopt Digest, Vol 38, Issue 6> To: <ipopt at list.coin-or.org>> Message-ID: <BAY142-W300A4F175A458E42035BEADD2B0 at phx.gbl>> Content-Type: text/plain; charset="gb2312"> > > Hi, all> Thank Dr Andreas for making it clear about "Hessian approximation".> And I have used valgrind to test my program.> > The errors are > "Conditional jump or move depends on uninitialised value(s)"> "Use of uninitialised value of size 4".> "Too few degrees of freedom (n_x = 0, n_c = 104). Trying fixed_variable_treatment = RELAX_BOUNDS"> > My program is modified from "MyExample" from IPOPT package> The main program is "dmocexample.cpp", in which it call mynlp(mynlp= new DMOC_NLP();)> > The program which defines the methods such as get_nlp_info() is called dmoc_nlp.cpp> > My question is> " Can I initialize the variables before "constructor" , "destructtor" and the methods in dmoc_nlp.cpp?" > Or I have to initialize the variables in different functions like "get_nlp_info()" and so on?> > It seems that I can not define the global variables in the main program"dmocexample.cpp" so that I do not have to define them in the "dmoc_nlp.cpp". And even I initialized variables in "dmoc_nlp.cpp" outsides of the functions, it seems it is not successfully initialized.> > Anyone can give some suggestions? Thank you so much.> Weizhong Zhang>
Electrical and Computer Engieering Dept> University of Louisville > > > > > > > > ----------------------------------------> > From: ipopt-request at list.coin-or.org> > Subject: Ipopt Digest, Vol 38, Issue 6> > To: ipopt at list.coin-or.org> > Date: Mon, 11 Feb 2008 12:00:02 -0500> > > > Send Ipopt mailing list submissions to> > ipopt at list.coin-or.org> > > > To subscribe or unsubscribe via the World Wide Web, visit> > http://list.coin-or.org/mailman/listinfo/ipopt> > or, via email, send a message with subject or body 'help' to> > ipopt-request at list.coin-or.org> > > > You can reach the person managing the list at> > ipopt-owner at list.coin-or.org> > > > When replying, please edit your Subject line so it is more specific> > than "Re: Contents of Ipopt digest..."> > > > > > Today's Topics:> > > > 1. Re: [Coin-ipopt] FW: Help on "Hessian Approximation" of my> > optimization problem (Andreas Waechter)> > > > > > ----------------------------------------------------------------------> > > > Message: 1> > Date: Mon, 11 Feb 2008 11:01:45 -0500 (EST)> > From: Andreas Waechter > > Subject: Re: [Ipopt] [Coin-ipopt] FW: Help on "Hessian Approximation"> > of my optimization problem> > To: ZhangWeizhong > > Cc: coin-ipopt at list.coin-or.org> > Message-ID: > > Content-Type: text/plain; charset="x-unknown"> > > > Hi,> > > > It is correct that you don't need to overload the bool eval_h function if > > you want to use the quasi-Newton option of Ipopt.> > > > But you should not change the argument list for the get_nlp_info function > > - if you do that, the Ipopt code will still try to call the original > > function, and as you saw, this doesn't work since this is then a pure > > virtual function, and you can't run the program. Just set nnz_h_lag to > > zero in your implementation of the original method of TNLP.> > > > As for the segmentation fault, it probably means that
there is something > > wrong in the way you call Ipopt. The easiest way to debug such memory > > problems is to use a memory checker, such as the free valgrind program for > > Linux.> > > > Regards,> > > > Andreas> > > > > > On Thu, 7 Feb 2008, ZhangWeizhong wrote:> > > >>> >> Sorry, I forgot the detailed information> >> IPOPT version: 3.3.3> >> My computer is i686 2.6.20-16-generic, ubuntu 7.10> >>> >>> >> From: greatzwz at hotmail.comTo: greatzwz at hotmail.comSubject: Help on > >> "Hessian Approximation" of my optimization problemDate: Wed, 6 Feb 2008 > >> 16:29:04 -0500> >>> >>> >> Hi, friends: Sorry to bother you. I have one problem regarding > >> "Hessian Approximation" in IPOPT application. In the main program, the > >> option is configured as "app->Options()- > >> SetStringValue("hessian_approximation","limited-memory")". 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. Then my program > >> can be compiled successfully, however the resulted executable program is > >> not working, the error message is "Segmentation fault(core dumped)". I > >> thought maybe that I did not provide the hessian informationin 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 "pure virtual method called > >> terminate called without an active exception" I have searched the > >> websit! e, it seems all the methods I used did not include itself or > >> other methods which are not defined previously.Thus I do not know why > >> the error indicates "pure virtual method called". If anybody can help, > >> I would appreciate that. Thank you so much. Weizhong Zhang> Subject: > >> Welcome to the "Coin-ipopt" mailing list (Digest mode)> From: > >> coin-ipopt-request at list.coin-or.org> To: greatzwz at hotmail.c
om> Date: > >> Wed, 6 Feb 2008 16:09:16 -0500>> Welcome to the > >> Coin-ipopt at list.coin-or.org mailing list!>> To post to this list, send > >> your email to:>> coin-ipopt at list.coin-or.org>> General information > >> about the mailing list is at:>> > >> http://list.coin-or.org/mailman/listinfo/coin-ipopt>> If you ever want > >> to unsubscribe or change your options (eg, switch to> or from digest > >> mode, change your password, etc.), visit your> subscription page at:>> > >> http://list.coin-or.org/mailman/options/coin-ipopt/greatzwz%40hotmail.com> > >>>> You can also!> >> make such adjustments via email by sending a message to:>> Coin-ipop> >>> >> t-request at list.coin-or.org>> with the word `help' in the subject or body (don't include the> quotes), and you will get back a message with instructions.>> You must know your password to change your options (including changing> the password, itself) or to unsubscribe. It is:>> 8686>> Normally, Mailman will remind you of your list.coin-or.org mailing> list passwords once every month, although you can disable this if you> prefer. This reminder will also include instructions on how to> unsubscribe or change your account options. There is also a button on> your options page that will email your current password to you.> >>> >> ?? Windows Live Spaces ?????????????????????????????? ??????????????> >> _________________________________________________________________> >> ?????????? MSN ????????????????????> >> http://mobile.msn.com.cn/> > > > ------------------------------> > > > _______________________________________________> > Ipopt mailing list> > Ipopt at list.coin-or.org> > http://list.coin-or.org/mailman/listinfo/ipopt> > > > > > End of Ipopt Digest, Vol 38, Issue 6> > ************************************> > _________________________________________________________________> MSN?????????????????????> http://im.live.cn/emoticons/?ID=18> > > ------------------------------> > _______________________________________________> Ipopt mailing list> Ipopt at list.coin-or.org> http://li
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