[Cbc] [Clp] GNUMath Prog

[ranganaths]

Hello,

 

                I don't Understand why we need GLPK which is once again a LP
solver with CBC which is also a LP solver. 

1.       The need is for  a converter which just generate the mps file from
a GMPL file format, correct me if I am wrong.

2.       If at all we need the whole GLPK, should I copy the entire GLPK
source in the path Cbc-2.6.2\CoinUtils\MSVisualStudio\v8?

3.       Is GLPK 4.34 compatible with CBC 2.6.2?

4.       Any documentation on how to compile GLPK with CBC on Windows?

 

Regards,

Ranganath S 

 

From: cbc-bounces at list.coin-or.org [mailto:cbc-bounces at list.coin-or.org] On
Behalf Of Haroldo Santos
Sent: Tuesday, February 08, 2011 5:29 PM
To: Michal Kaut
Cc: cbc at list.coin-or.org
Subject: Re: [Cbc] [Clp] GNUMath Prog

 

Hi Michal,

Could you try something like :
cbc posmDTF.mat%comp-2007-2-17.dat solve solu.txt

Will save solution in solu.txt




On Tue, Feb 8, 2011 at 6:14 AM, Michal Kaut <mail at michalkaut.net> wrote:

Just a question about the level of GMPL support: last time I tried, only
Symphony parsed also the reporting parts of the .mod files (printing of
the results etc) - Cbc simply ignored them.
Has it improved now? And if not, are there any plans to do it? (Solving
a problem does not really help, if one cannot print the results
afterwards..)

Regards,
Michal



On 07/02/11 19:06, Ted Ralphs wrote:
> This is not really the right mailing list for question about CBC, so
> I'm cc'ing the Cbc list. All of the COIN-OR projects can read GMPL in
> principle if the code is built with GLPK present. The ability to read
> GMPL files is provided in the CoinUtils project through a link to
> GLPK. With Cbc, if you specify the model and data files with a "%" in
> between as your input file name, it will read them as GMPL, i.e.,
>
> cbc sample.mod%sample.dat
>
> To build cbc with GMPL support using the autotools, you would go into
> the ThirdParty/Glpk directory and run the command
>
> ./get.Glpk
>
> This will download the source for the proper version of Glpk. Then
> just configure and build as usual. The Glpk source will be
> auto-detected, built, and linked. We cannot distribute binaries that
> include this capability because of restrictions imposed by the GPL.
> Feel free to post further questions to either the Cbc list or the
> CoinUtils list, as appropriate.
>
> Cheers,
>
> Ted
>
> On Mon, Feb 7, 2011 at 12:10 PM, Brian Borchers<borchers at nmt.edu>  wrote:
>>
>>>
>>> Message: 1
>>> Date: Mon, 7 Feb 2011 10:02:58 +0530
>>> From: "ranganaths"<ranganath.s at excelindia.com>
>>> Subject: [Clp] GNUMath Prog
>>> To:<clp at list.coin-or.org>
>>> Message-ID:<001201cbc680$192379e0$4b6a6da0$@s at excelindia.com>
>>> Content-Type: text/plain; charset="us-ascii"
>>>
>>> Hello,
>>>
>>>
>>>
>>>                 Does COIN-OR BC(CBC) accept the input model in the
>>> GNUMathProg format?
>>>
>>>
>>
>> You can use glpk to convert a model from GNU Math Prog format to MPS
format
>> and then use the MPS file as input into the COIN-OR tools.
>>
>>
>>
>> --
>> Brian Borchers                          borchers at nmt.edu
>> Department of Mathematics      http://www.nmt.edu/~borchers/
<http://www.nmt.edu/%7Eborchers/> 
>> New Mexico Tech                       Phone: (575) 322-2592
>> Socorro, NM 87801                   FAX: (575) 835-5366
>>
>> _______________________________________________
>> Clp mailing list
>> Clp at list.coin-or.org
>> http://list.coin-or.org/mailman/listinfo/clp
>>
>>
>
>
>

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-- 
=============================================================
Haroldo Gambini Santos
Computing Department - Universidade Federal de Ouro Preto - UFOP
email: haroldo [at ] iceb.ufop.br
home/research page: http://www.iceb.ufop.br/decom/prof/haroldo/
 
"Computer science is no more about computers than astronomy 
is about telescopes." Edsger Dijkstra
 

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