<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt">thank you very much Antonello y Novalio,<br><br>the problem is not that i don't like gams<br>but that it's expensive, and iīm looking for an alternative<br>for students and researchers that canīt afford it<br>(as a matter of fact i don't see the point in developing <br>a free ipopt if people canīt use it but paying to gams or others )<br><div><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">anyhow, i wonder if someone has tried to do something</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">like what iīm looking for: a free open source readily usable</div><div style="color: rgb(0, 0, 0);
font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">to solve large systems of equations with ipopt</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">so that one could work on a hands on example</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">cheers</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif;
background-color: transparent; font-style: normal;">gaspar<br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><span><br></span></div><div><br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> "ipopt-request@list.coin-or.org" <ipopt-request@list.coin-or.org><br> <b><span style="font-weight: bold;">To:</span></b> ipopt@list.coin-or.org <br> <b><span style="font-weight: bold;">Sent:</span></b> Monday, February 25, 2013 11:00 AM<br> <b><span style="font-weight: bold;">Subject:</span></b>
Ipopt Digest, Vol 98, Issue 19<br> </font> </div> <br>
Send Ipopt mailing list submissions to<br> <a ymailto="mailto:ipopt@list.coin-or.org" href="mailto:ipopt@list.coin-or.org">ipopt@list.coin-or.org</a><br><br>To subscribe or unsubscribe via the World Wide Web, visit<br> http://list.coin-or.org/mailman/listinfo/ipopt<br>or, via email, send a message with subject or body 'help' to<br> <a ymailto="mailto:ipopt-request@list.coin-or.org" href="mailto:ipopt-request@list.coin-or.org">ipopt-request@list.coin-or.org</a><br><br>You can reach the person managing the list at<br> <a ymailto="mailto:ipopt-owner@list.coin-or.org" href="mailto:ipopt-owner@list.coin-or.org">ipopt-owner@list.coin-or.org</a><br><br>When replying, please edit your Subject line so it is more specific<br>than "Re: Contents of Ipopt digest..."<br><br><br>Today's Topics:<br><br> 1. help to use ipopt (Gaspar N??ez)<br> 2. Re: help to use ipopt (Antonello
Lobianco)<br><br><br>----------------------------------------------------------------------<br><br>Message: 1<br>Date: Sun, 24 Feb 2013 18:07:13 -0800 (PST)<br>From: Gaspar N??ez <<a ymailto="mailto:nuroga@yahoo.com" href="mailto:nuroga@yahoo.com">nuroga@yahoo.com</a>><br>To: "<a ymailto="mailto:ipopt@list.coin-or.org" href="mailto:ipopt@list.coin-or.org">ipopt@list.coin-or.org</a>" <<a ymailto="mailto:ipopt@list.coin-or.org" href="mailto:ipopt@list.coin-or.org">ipopt@list.coin-or.org</a>><br>Subject: [Ipopt] help to use ipopt<br>Message-ID:<br> <<a ymailto="mailto:1361758033.55580.YahooMailNeo@web162306.mail.bf1.yahoo.com" href="mailto:1361758033.55580.YahooMailNeo@web162306.mail.bf1.yahoo.com">1361758033.55580.YahooMailNeo@web162306.mail.bf1.yahoo.com</a>><br>Content-Type: text/plain; charset="iso-8859-1"<br><br>hi<br><br>i?m an economist and<br><br>i?ve been using ipopt with GAMS<br>to solve large squared nonlinear
systems of equations<br><br>but i'd like not to use GAMS anymore<br>but some free open source software or interface<br><br>i will very much appreciate every piece of help<br>to do this in the easiest possible way<br>using a programming language similar to that of GAMS if possible <br><br>since i?m not a programmer and not an expert on implementing algorithms<br><br>thankyou very much<br><br>gaspar<br><br>on <br>-------------- next part --------------<br>An HTML attachment was scrubbed...<br>URL: <http://list.coin-or.org/pipermail/ipopt/attachments/20130224/d9ac386f/attachment-0001.html><br><br>------------------------------<br><br>Message: 2<br>Date: Mon, 25 Feb 2013 09:27:25 +0100<br>From: Antonello Lobianco <<a ymailto="mailto:antonello@lobianco.org" href="mailto:antonello@lobianco.org">antonello@lobianco.org</a>><br>To: Gaspar N??ez <<a ymailto="mailto:nuroga@yahoo.com" href="mailto:nuroga@yahoo.com">nuroga@yahoo.com</a>><br>Cc: "<a
ymailto="mailto:ipopt@list.coin-or.org" href="mailto:ipopt@list.coin-or.org">ipopt@list.coin-or.org</a>" <<a ymailto="mailto:ipopt@list.coin-or.org" href="mailto:ipopt@list.coin-or.org">ipopt@list.coin-or.org</a>><br>Subject: Re: [Ipopt] help to use ipopt<br>Message-ID:<br> <<a ymailto="mailto:CAOibvJEt7oSnfsZkVAOkbvHCk-Wx6g5Yh9YJNqHnR3O2qWyysA@mail.gmail.com" href="mailto:CAOibvJEt7oSnfsZkVAOkbvHCk-Wx6g5Yh9YJNqHnR3O2qWyysA@mail.gmail.com">CAOibvJEt7oSnfsZkVAOkbvHCk-Wx6g5Yh9YJNqHnR3O2qWyysA@mail.gmail.com</a>><br>Content-Type: text/plain; charset="iso-8859-1"<br><br>Ipopt is the solver engine, GAMS is the interface that let you use such<br>engine (and many others) from an high-level point of view.<br>If you don't like gams, you can try other interfaces to ipopt or to other<br>solver engines.<br><br>If you are looking for open source, you may want give a try to Pyomo or<br>OpenOpt, but they are not documented so extensively
like GAMS or AMPL.<br><br>Antonello<br><br>2013/2/25 Gaspar N??ez <<a ymailto="mailto:nuroga@yahoo.com" href="mailto:nuroga@yahoo.com">nuroga@yahoo.com</a>><br><br>> hi<br>><br>> i?m an economist and<br>> i?ve been using ipopt with GAMS<br>> to solve large squared nonlinear systems of equations<br>><br>> but i'd like not to use GAMS anymore<br>> but some free open source software or interface<br>><br>> i will very much appreciate every piece of help<br>> to do this in the easiest possible way<br>> using a programming language similar to that of GAMS if possible<br>> since i?m not a programmer and not an expert on implementing algorithms<br>><br>> thankyou very much<br>><br>> gaspar<br>> on<br>><br>><br>> _______________________________________________<br>> Ipopt mailing list<br>> <a ymailto="mailto:Ipopt@list.coin-or.org"
href="mailto:Ipopt@list.coin-or.org">Ipopt@list.coin-or.org</a><br>> <a href="http://list.coin-or.org/mailman/listinfo/ipopt" target="_blank">http://list.coin-or.org/mailman/listinfo/ipopt</a><br>><br>><br><br><br>-- <br>Antonello Lobianco<br>INRA, Laboratoire d'Economie Foresti?re<br>14 Rue Girardet - 54000 Nancy, France<br>Tel: +33.652392310<br>Email: <a ymailto="mailto:antonello.lobianco@nancy-engref.inra.fr" href="mailto:antonello.lobianco@nancy-engref.inra.fr">antonello.lobianco@nancy-engref.inra.fr</a><br>http://antonello.lobianco.org<br>-------------- next part --------------<br>An HTML attachment was scrubbed...<br>URL: <http://list.coin-or.org/pipermail/ipopt/attachments/20130225/d752185a/attachment-0001.html><br><br>------------------------------<br><br>_______________________________________________<br>Ipopt mailing list<br><a ymailto="mailto:Ipopt@list.coin-or.org"
href="mailto:Ipopt@list.coin-or.org">Ipopt@list.coin-or.org</a><br><a href="http://list.coin-or.org/mailman/listinfo/ipopt" target="_blank">http://list.coin-or.org/mailman/listinfo/ipopt</a><br><br><br>End of Ipopt Digest, Vol 98, Issue 19<br>*************************************<br><br><br> </div> </div> </blockquote></div> </div></body></html>