[Cbc] I think we found a bug in cbc: How can we report it and get fixed quickly ?

[Haroldo Gambini Santos]

Hi Thomas,

I converted your MPS to LP to take a look (don't have AMPL here).
Strangely no "bounds" section is generated.

The MPS conversion also lost the original names, can yon generate 
including the original names so that the specific result for variable ym 
is visible ?

Cheers

On 30-09-2015 10:17, ovovis wrote:
> Hi Haraldo,
>
> have you had a chance to look at the lp yet ?
>
> Would be great to hear from you. Let me know if I can be of any 
> further help.
>
> Thomas
>
>> On Sep 28, 2015, at 3:44 PM, Haroldo Gambini Santos 
>> <haroldo.santos at gmail.com <mailto:haroldo.santos at gmail.com>> wrote:
>>
>> Hi Thomas,
>>
>> Can you send the LP where the problem occurs ?
>>
>> Cheers
>>
>> On 28-09-2015 01:37, ovovis wrote:
>>> Dear cbc team,
>>>
>>> my name is Thomas Enge from Berlin Germany. We are a small (2 
>>> persons) start up company (see also www.ovovis.de and then About 
>>> us). We use AMPL + cbc internally to provide a portfolio 
>>> optimization service to energy traders. So far we only ran tests 
>>> with our potential customers when we detected that cbc violates the 
>>> domain definition of variables in the solution for specific problem 
>>> settings. Our variables are defined as >= 0, but the result also 
>>> produces negative numbers for these variables. This is the case for 
>>> version 2.9.4 - 2.9.6.
>>>
>>> My question is how can we address this issue best to you ? And is 
>>> there a way to receive a quick fix or do we need to wait for the 
>>> next stable release ? The latter is very important for us to 
>>> understand since it effects our go-live date.
>>>
>>> Thanks in advance for your help
>>>
>>> Thomas Enge
>>>
>>>
>>> OvvvvvvvvvvvvvvvvvvvOvis
>>>
>>> ovovis GmbH
>>> Dr. Thomas Enge
>>> Stargarder Str. 57
>>> D-10437 Berlin
>>>
>>> M: +49 1515 910 5118
>>> F: +49 30 538 10 188
>>> E: tenge at ovovis.de <mailto:tenge at ovovis.de>
>>> W: www.ovovis.de <http://www.ovovis.de/>
>>> --------------------------------------
>>> Amtsgericht Charlottenburg
>>> HRB 116742B
>>> Vat-ID: DE262642185
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Cbc mailing list
>>> Cbc at list.coin-or.org
>>> http://list.coin-or.org/mailman/listinfo/cbc
>>
>> -- 
>> ==================================================
>> Haroldo Gambini Santos
>> D.Sc, Computer Science
>> Universidade Federal de Ouro Preto
>> http://www.decom.ufop.br/haroldo/
>

-- 
==================================================
Haroldo Gambini Santos
D.Sc, Computer Science
Universidade Federal de Ouro Preto
http://www.decom.ufop.br/haroldo/

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