[Couenne] Changing on Couenne code to save information

[Pietro Belotti]

Wendel,

I think a good place is Couenne/src/convex/generateCuts.cpp, at the
beginning of CouenneCutGenerator::generateCuts(). This function is called
more or less at every node. You can get the total CPU time spent so far
with CoinCpuTime(), and lower and upper bound with si.getColLower ()
[indObj] and problem_ -> getCutOff (), respectively (indObj is declared at
the beginning).

Regards,
Pietro



On Fri, Oct 18, 2013 at 10:56 PM, Wendel Melo <wendelalexandre at gmail.com>wrote:

> Thank you Stefan and Pietro!
>
> Taking advantage, Pietro, do you know where I could change the Couenne
> code to save that information in a external txt file? I have lot of
> problems to test and it would be very painful check output for all cases
>
> Thank you again
>
> Wendel
>
>
> 2013/10/17 Pietro Belotti <petr.7b6 at gmail.com>
>
>> Wendel,
>>
>> in alternative you can set the option
>>
>> bb_log_interval 10
>>
>> (or an even smaller number than 10) in the option file couenne.opt. This
>> will increase by far the amount of output, but Couenne will print a line
>> every 10 nodes with information on the lower bound and the total CPU time
>> so far. You can then select those lines with times around multiples of 1800.
>>
>> Pietro
>>
>>
>> On Thu, Oct 17, 2013 at 3:10 PM, Stefan Vigerske <
>> stefan at math.hu-berlin.de> wrote:
>>
>>> Hi,
>>>
>>> I'm adding a primal heuristic to Couenne in order to track such
>>> information.
>>>
>>> CouenneSetup couenne_setup;
>>> couenne_setup.heuristics().**push_back(BabSetupBase::**
>>> HeuristicMethod());
>>> couenne_setup.heuristics().**back().heuristic = new
>>> GamsCbcHeurSolveTrace(...);
>>> couenne_setup.heuristics().**back().id = "Solvetrace writing heuristic";
>>>
>>> https://projects.coin-or.org/**GAMSlinks/browser/trunk/**GAMSlinks/src/*
>>> *SolverInterfaces/**GamsCbcHeurSolveTrace.hpp<https://projects.coin-or.org/GAMSlinks/browser/trunk/GAMSlinks/src/SolverInterfaces/GamsCbcHeurSolveTrace.hpp>
>>>
>>> Stefan
>>>
>>>
>>> On 10/16/2013 11:18 PM, Wendel Melo wrote:
>>>
>>>> Hi experts
>>>>
>>>> I am a new couenne user. I have used Couenne to solve a kind of
>>>> nonconvex
>>>> quadratic problems. However, I would like to save information about
>>>> Couenne
>>>> progress in a file after a certain measure of time, since I am doing a
>>>> comparative research. For example, I would like to save lower bound and
>>>> upper bound of a input problem after each 30 minutes of cpu time.
>>>>
>>>> I know it would require a change on Couenne code. Does anyone here have
>>>> some idea where I could do those changes in the Couenne code?
>>>>
>>>> Thanks in advanced
>>>>
>>>>
>>>> Wendel Melo
>>>> Ph. D. Student
>>>> University of Michigan / Federal University of Rio de Janeiro
>>>>
>>>>
>>>>
>>>>
>>>> ______________________________**_________________
>>>> Couenne mailing list
>>>> Couenne at list.coin-or.org
>>>> http://list.coin-or.org/**mailman/listinfo/couenne<http://list.coin-or.org/mailman/listinfo/couenne>
>>>>
>>>>
>>> ______________________________**_________________
>>> Couenne mailing list
>>> Couenne at list.coin-or.org
>>> http://list.coin-or.org/**mailman/listinfo/couenne<http://list.coin-or.org/mailman/listinfo/couenne>
>>>
>>
>>
>
>
> --
> Wendel
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://list.coin-or.org/pipermail/couenne/attachments/20131019/0f0bef07/attachment.html>