[Scip] Error when displaying output

[Stephen J Maher]

Hi Stefan,

That works now. I am not getting any errors.

Thanks a lot for your help.

Cheers,

Steve

Stefan Heinz wrote:
> Hi Steve,
>
> there is an error in the heuristic dins in case of column generation.
> Could please try the following:
>
> Add the line
>
> SCIP_CALL(SCIPsetHeuristics(scip, SCIP_PARAMSETTING_AGGRESSIVE, TRUE));
>
> back to your code and turn off the heuristic dins
>
> SCIP_CALL( SCIPsetIntParam(scip, "heuristics/dins/freq", -1) );
>
> The order of the two code lines have to be as shown above. Rerun you
> program. Is the error still there?
>
> Thanks Stefan
>
>   
>> Hi Michael,
>>
>> I have discovered a cause of the problem for me. I am using the
>> following call for the heuristic settings.
>>
>> SCIP_CALL(SCIPsetHeuristics(scip, SCIP_PARAMSETTING_AGGRESSIVE, TRUE));
>>
>> When I remove this line from my code everything works correctly. So I am
>> not sure whether there is an underlying problem that using the above
>> command was bring out, or whether there is just a problem for me using
>> that command.
>>
>> In addition to my problem that I sent through earlier, I was also
>> getting a memory issue when adding coefficients to linear constraints in
>> my pricer. This has also cleared up when I remove the above command.
>>
>> Thanks for your help,
>>
>> Steve
>>
>> Stephen J Maher wrote:
>>     
>>> Hi Michael,
>>>
>>> The LP solver that I am using is Soplex and I have compiled SCIP using
>>> gcc version 4.1.2. I am using SCIP as a callable library in my own
>>> code written in C++. The branching rule that I am using is Ryan/Foster
>>> branching that I have written also in C++.
>>>
>>> I am also using a variable pricer with my model to perform column
>>> generation.
>>>
>>> I am sorry, but I couldn't get valgrind to work on my PC. I will have
>>> to talk to IT about that one.
>>>
>>> Thanks for your help,
>>>
>>> Steve
>>>
>>> michael.winkler at zib.de wrote:
>>>       
>>>> Hi Steve,
>>>>
>>>> I haven't seen your problem till now. But maybe you can provide us/me
>>>> with
>>>> some more details about your crash. Which LP solver did you use and
>>>> which
>>>> compiler version under what system did you compile SCIP? Is it SCIP
>>>> itself
>>>> or have you written your own code? What kind of branching rule have you
>>>> applied?
>>>>
>>>> It looks like you already did a gdb run, to determine the error. Maybe
>>>> you
>>>> can try a valgrind run as well, to see whether you can trust the gdb
>>>> output.
>>>> (e.g. valgrind -v scip -f filename)
>>>>
>>>> Best, Michael
>>>>
>>>>
>>>>         
>>>>> Hi everyone,
>>>>>
>>>>> I am having some trouble at the moment with SCIP producing a
>>>>> segmentation fault at line 419 of disp.c. When it tries to access
>>>>> set->disps[i] is seems to not be pointing to any memory address.
>>>>>
>>>>> This only happens directly after the model applies a branching rule.
>>>>> Also it only occurs when I compile the code with OPT=opt-gccold, it
>>>>> works fine when I use OPT=dbg.
>>>>>
>>>>> I am using SCIP 2.0.
>>>>>
>>>>> Has anyone seen any problems like this before?
>>>>>
>>>>> Cheers,
>>>>>
>>>>> Steve
>>>>> _______________________________________________
>>>>> Scip mailing list
>>>>> Scip at zib.de
>>>>> http://listserv.zib.de/mailman/listinfo/scip
>>>>>
>>>>>
>>>>>           
>>>>
>>>>         
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>>>
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>
>
>   
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