[Couenne] Any program (other than AMPL) to write NL files?

[Mustafa Kilinc]

Sorry I did not realize that COCONUT was using ampl when coverting mod 
files.
Mustafa

On 09/28/2011 04:04 AM, sguazt wrote:
> On Tue, Sep 27, 2011 at 11:37 PM, Mustafa Kilinc<kilinc at wisc.edu>  wrote:
>    
>> Hello Marco,
>> I used COCONUT converters for converting MINLP problems. To convert a "mod"
>> file, first you need to convert it to "dag" file. Then you can convert it to
>> an "nl" file.
>> http://www.mat.univie.ac.at/users/coconut/public_html/coconut-environment/
>> Here is the direct link of converters.
>> http://www.mat.univie.ac.at/coconut-environment/coconut-converters-bin.FC10.tgz
>>
>>      
> Hi Mustafa,
>
> Thank you for replying.
>
> I've just tried COCONOUT converters but I run into troubles.
> If I understand, the first step is to perform the AMPL->DAG
> conversion. In order to do so, I run the 'ampl2dag' converter.
> However this script fails in running AMPL (at line 39) since it
> violates the student version limit:
>
> Sorry, the student edition of AMPL is limited to 300 variables and 300
> constraints and objectives (after presolve) for nonlinear problems.
> You have 350 variables, 0 constraints, and 1 objective.
>
> Error using ampl to convert tre.mod to non-linear format
>
> Where I am wrong?
>
> Thank you very much!
>
> Best,
>
> -- Marco
>    
>> Cheers,
>> Mustafa
>>
>> On 09/27/2011 05:14 PM, sguazt wrote:
>>      
>>> Hi,
>>>
>>> I know this is an already asked question (the last one I found is
>>> http://list.coin-or.org/pipermail/couenne/2011-March/000175.html).
>>> But maybe something new has been released meanwhile.
>>>
>>> So, does anyone know a free program for linux for writing NL files?
>>>
>>> I've used to use the AMPL student version, but now I have to solve
>>> some problem which is bigger than the student-version limit.
>>>
>>> Thank you very much for any help.
>>>
>>> Best,
>>>
>>> -- Marco
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>>> Couenne at list.coin-or.org
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>>>
>>>        
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