[gecode-users] Problem with rev13418 performances

[Mohamed Rezgui]

Hi Victor,

thank you, I dit it but no speed up come. As Christian Schulte says : it
rather the default strategy is bad.
I hope the new version (4.0) comes soon ^^.

Thank you for your attention ^^
Best regards,
Mohamed REZGUI

2013/2/26 victor.zverovich at gmail.com <victor.zverovich at gmail.com>

> CMake supports different build types, make sure that you use the Release
> one to enable optimizations and disable asserts and debug info. You can do
> it at configuration time with the following command:
>
>   cmake -DCMAKE_BUILD_TYPE=Release
>
> HTH,
> Victor
>
> On Tue, Feb 26, 2013 at 7:22 AM, Mohamed Rezgui <kyo.alone at gmail.com>wrote:
>
>> OK so I will work with gecode 3.7.3.
>>
>> I just compile the revision with cmake and I use gecode 3.7.3 from
>> download section of the official website.
>> I will see the flags used in compilation.
>>
>> Thank you for all ^^
>> Best Regards,
>> Mohamed REZGUI
>>
>> 2013/2/26 Christian Schulte <cschulte at kth.se>
>>
>>> That's what happens when you use the trunk, you should never, because,
>>> yes, it is the trunk and not a release ;-)****
>>>
>>> ** **
>>>
>>> The difference is easy to explain though. The instance you have chosen
>>> does not have a search annotation in it, so Gecode picks some default
>>> search (which for this type of problems is a desaster anyway). And we just
>>> changed the default search behavior for the upcoming Gecode 4.****
>>>
>>> ** **
>>>
>>> But then there is another observation: Did you compile both versions
>>> with exactly the same flags? I doubt. Please check this.****
>>>
>>> ** **
>>>
>>> Christian****
>>>
>>> ** **
>>>
>>> --****
>>>
>>> Christian Schulte, Professor of Computer Science, KTH,
>>> www.ict.kth.se/~cschulte/****
>>>
>>> ** **
>>>
>>> *From:* users-bounces at gecode.org [mailto:users-bounces at gecode.org] *On
>>> Behalf Of *Mohamed Rezgui
>>> *Sent:* Tuesday, February 26, 2013 3:31 PM
>>> *To:* users at gecode.org
>>> *Subject:* [gecode-users] Problem with rev13418 performances****
>>>
>>> ** **
>>>
>>> Hi, ****
>>>
>>> ** **
>>>
>>> I made benchmark with the attached instance
>>> (2DLevelPacking_Class5_20_6.fzn) from the minizinc challenges with the
>>> latest version of gecode revision 13418 in release mode.****
>>>
>>> ** **
>>>
>>> When I compare performances between this version and the 3.7.3 version
>>> of gecode, I am so surprised !!!.****
>>>
>>> Gecode 3.7.3 is faster than the latest revision !!!****
>>>
>>> ** **
>>>
>>> I just use the parameter -s for stats :****
>>>
>>> ---> gecode/bin/fz -s 2DLevelPacking_Class5_20_6.fzn****
>>>
>>> ** **
>>>
>>> Use of E7-4870 Intel processor****
>>>
>>> ** **
>>>
>>> Benchmarks with gecode rev13418 :****
>>>
>>> ** **
>>>
>>> %%  runtime:       2594.74 (2594737 ms)****
>>>
>>> %%  solvetime:     2594.72 (2594718 ms)****
>>>
>>> %%  workers:     1****
>>>
>>> %%  type search:     bab****
>>>
>>> %%  solutions:     1****
>>>
>>> %%  objective:     9****
>>>
>>> %%  variables:     801****
>>>
>>> %%  propagators:   70****
>>>
>>> %%  propagations:  22306041****
>>>
>>> %%  nodes:         1564742****
>>>
>>> %%  failures:      702986****
>>>
>>> %%  restarts:      0****
>>>
>>> %%  peak depth:    51****
>>>
>>> %%  peak memory:   838 KB****
>>>
>>> ** **
>>>
>>> Benchmarks with gecode 3.7.3 :****
>>>
>>> %%  runtime:       32.394 (32394.264 ms)****
>>>
>>> %%  solvetime:     32.384 (32384.895 ms)****
>>>
>>> %%  workers:     1****
>>>
>>> %%  type search:     bab****
>>>
>>> %%  solutions:     1****
>>>
>>> %%  variables:     801****
>>>
>>> %%  objective:     9****
>>>
>>> %%  propagators:   70****
>>>
>>> %%  propagations:  23159635****
>>>
>>> %%  nodes:         3114256****
>>>
>>> %%  failures:      1557118****
>>>
>>> %%  peak depth:    53****
>>>
>>> %%  peak memory:   2831 KB****
>>>
>>> ** **
>>>
>>> Can you help me about that ???****
>>>
>>> Is it better that I work with 3.7.3 version ??? ****
>>>
>>> Thank you for your attention.****
>>>
>>> ** **
>>>
>>> --
>>> Best Regards,****
>>>
>>> Mohamed REZGUI
>>>
>>
>> _______________________________________________
>> Gecode users mailing list
>> users at gecode.org
>> https://www.gecode.org/mailman/listinfo/gecode-users
>>
>>
>


-- 
Cordialement,
Mohamed REZGUI
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