[gecode-users] Problem with rev13418 performances

[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
>>
>
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