[Ipopt] Ipopt Digest, Vol 98, Issue 19

[Gaspar Núñez]

thank you very much Antonello y Novalio,

the problem is not that i don't like gams
but that it's expensive, and i´m looking for an alternative
for students and researchers that can´t afford it
(as a matter of fact i don't see the point in developing 
a free ipopt if people can´t use it but paying to gams or others )


anyhow, i wonder if someone has tried to do something
like what i´m looking for: a free open source readily usable
to solve large systems of equations with ipopt
so that one could work on a hands on example

cheers

gaspar





>________________________________
> From: "ipopt-request at list.coin-or.org" <ipopt-request at list.coin-or.org>
>To: ipopt at list.coin-or.org 
>Sent: Monday, February 25, 2013 11:00 AM
>Subject: Ipopt Digest, Vol 98, Issue 19
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>Today's Topics:
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>   1. help to use ipopt (Gaspar N??ez)
>   2. Re: help to use ipopt (Antonello Lobianco)
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>----------------------------------------------------------------------
>
>Message: 1
>Date: Sun, 24 Feb 2013 18:07:13 -0800 (PST)
>From: Gaspar N??ez <nuroga at yahoo.com>
>To: "ipopt at list.coin-or.org" <ipopt at list.coin-or.org>
>Subject: [Ipopt] help to use ipopt
>Message-ID:
>    <1361758033.55580.YahooMailNeo at web162306.mail.bf1.yahoo.com>
>Content-Type: text/plain; charset="iso-8859-1"
>
>hi
>
>i?m an economist and
>
>i?ve been using ipopt with GAMS
>to solve large squared nonlinear systems of equations
>
>but i'd like not to use GAMS anymore
>but some free open source software or interface
>
>i will very much appreciate every piece of help
>to do this in the easiest possible way
>using a programming language similar to that of GAMS if possible 
>
>since i?m not a programmer and not an expert on implementing algorithms
>
>thankyou very much
>
>gaspar
>
>on 
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>------------------------------
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>Message: 2
>Date: Mon, 25 Feb 2013 09:27:25 +0100
>From: Antonello Lobianco <antonello at lobianco.org>
>To: Gaspar N??ez <nuroga at yahoo.com>
>Cc: "ipopt at list.coin-or.org" <ipopt at list.coin-or.org>
>Subject: Re: [Ipopt] help to use ipopt
>Message-ID:
>    <CAOibvJEt7oSnfsZkVAOkbvHCk-Wx6g5Yh9YJNqHnR3O2qWyysA at mail.gmail.com>
>Content-Type: text/plain; charset="iso-8859-1"
>
>Ipopt is the solver engine, GAMS is the interface that let you use such
>engine (and many others) from an high-level point of view.
>If you don't like gams, you can try other interfaces to ipopt or to other
>solver engines.
>
>If you are looking for open source, you may want give a try to Pyomo or
>OpenOpt, but they are not documented so extensively like GAMS or AMPL.
>
>Antonello
>
>2013/2/25 Gaspar N??ez <nuroga at yahoo.com>
>
>> hi
>>
>> i?m an economist and
>> i?ve been using ipopt with GAMS
>> to solve large squared nonlinear systems of equations
>>
>> but i'd like not to use GAMS anymore
>> but some free open source software or interface
>>
>> i will very much appreciate every piece of help
>> to do this in the easiest possible way
>> using a programming language similar to that of GAMS if possible
>> since i?m not a programmer and not an expert on implementing algorithms
>>
>> thankyou very much
>>
>> gaspar
>> on
>>
>>
>> _______________________________________________
>> Ipopt mailing list
>> Ipopt at list.coin-or.org
>> http://list.coin-or.org/mailman/listinfo/ipopt
>>
>>
>
>
>-- 
>Antonello Lobianco
>INRA, Laboratoire d'Economie Foresti?re
>14 Rue Girardet - 54000 Nancy, France
>Tel: +33.652392310
>Email: antonello.lobianco at nancy-engref.inra.fr
>http://antonello.lobianco.org
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>End of Ipopt Digest, Vol 98, Issue 19
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