[Couenne] Couenne Digest, Vol 9, Issue 2

[Pietro Belotti]

Dear Choaib,

the options are passed to Couenne via couenne.opt without AMPL knowing  
about them. Couenne uses the AMPL interface only to exchange data  
about the problem and the solution, not the options. Therefore,  
unfortunately AMPL does not know about any Couenne option and cannot  
display them.

Hope this helps.

Cheers,
Pietro


On 09/02/2009, Choaib Bousba <choaib.bousba at atosorigin.com> wrote:

> Dear Pietro,
>
> Thank you for answering.
>
> Sorry I think I have confused by speaking abour AMPL. In fact I  
> meant that when I wann to display the value of any parameter  
> supposedly set in the file "couenne.opt", I get the message given as  
> example. For some reason, I tought I  can display any parameter set  
> in ipopt.opt file using ampl command , for example:  display  
> constr_viol_tol Thank you again.
>
>
>
>
> Best Regards =====================
>
>
> Choaib Bousba Energy Systems Analysis Expert
>
> Atos Origin - Energy & Utilities Zirst - 36 Chemin du Vieux Chêne  
> B.P. 104 - 38243 MEYLAN Cedex - France
>
> Tel :(+33) 4 76 41 67 37 Mob :(+33) 6 12 72 85 42
> Fax :(+33) 4 76 90 47 08
>
> E-Mail : choaib.bousba at atosorigin.com
>
>
>
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>> Today's Topics:
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>>   1. Re: about couenne.opt file (Pietro Belotti)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Wed, 05 Aug 2009 11:01:04 -0400
>> From: Pietro Belotti <belotti at lehigh.edu>
>> Subject: Re: [Couenne] about couenne.opt file
>> To: couenne at list.coin-or.org
>> Message-ID: <20090805110104.16255ulsp8zkbo34 at imp6.cc.lehigh.edu>
>> Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes";
>> 	format="flowed"
>>
>> Dear Choaib,
>>
>> for now, all Couenne options can only be specified in the  
>> couenne.opt  file only, in the following format:
>>
>> convexifying_print_level 0
>>
>> If a couenne.opt file is placed as you say, there is no need to   
>> specify those options again in AMPL.
>>
>> Pietro
>>
>>
>> On 08/04/2009, Choaib Bousba <choaib.bousba at atosorigin.com> wrote:
>>
>>
>>> Dear All,
>>>
>>> I try to use couenne for the first time.
>>> I use ampl to describe a small test problem found in couenne : a user's
>>> manual (? 5  output of couenne).
>>> I have installed the file couenne.opt in the same directory as
>>> couenne.exe and ampl.exe (where I launch the execution of my test problem).
>>> For some reason I try to found ou set the parameters such as :
>>> boundtightening_print_level  or convexifying_print_level , I get an
>>> message such as ( please see the screenshot) :
>>>
>>> ampl: option convexifying_print_level ;
>>> option convexifying_print_level ''; #not defined
>>>
>>> Could you please explain why I have such kind of message ?
>>>
>>>
>>> Thank you in advance
>>>
>>>
>>>
>>>
>>>
>>> --
>>>
>>>
>>>
>>>
>>> Best Regards
>>>
>>> =====================
>>>
>>>
>>> Choaib Bousba
>>>
>>> Energy Systems Analysis Expert
>>>
>>> Atos Origin - Energy & Utilities
>>>
>>> Zirst - 36 Chemin du Vieux Ch?ne
>>>
>>> B.P. 104 - 38243 MEYLAN Cedex - France
>>>
>>> Tel :(+33) 4 76 41 67 37
>>> Mob :(+33) 6 12 72 85 42
>>> Fax :(+33) 4 76 90 47 08
>>>
>>> E-Mail : choaib.bousba at atosorigin.com
>>>
>>>
>>> _______________________________________________
>>> Couenne mailing list
>>> Couenne at list.coin-or.org
>>> http://list.coin-or.org/mailman/listinfo/couenne
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>>>
>>
>>
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>> End of Couenne Digest, Vol 9, Issue 2
>> *************************************
>>
>>
>>
>



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