[Couenne] Couenne Digest, Vol 9, Issue 2

[Stefan Vigerske]

Hi,

you can set the option
  print_user_options yes
in couenne.opt to let Couenne print all options that have changed from
the default settings.

Stefan

Pietro Belotti schrieb:
> 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
>>
>>
>>
>> couenne-request at list.coin-or.org a écrit :
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>>>   1. Re: about couenne.opt file (Pietro Belotti)
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>>>
>>> ----------------------------------------------------------------------
>>>
>>> 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
>>>>
>>>>
>>>> _______________________________________________
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>>>>
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>>> End of Couenne Digest, Vol 9, Issue 2
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> 
> 
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