[gecode-users] Problem with rev13418 performances

[Mohamed Rezgui]

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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