[gecode-users] number of propagators

[Alejandro Arbelaez]

Hi,


I've been trying some gecode examples on different machines, a macbook-pro
2.4Ghz under  ubuntu 7.01  (i386),  gcc version 4.0.1 and a Intel Xeon  2.33
Ghz under Mandriva 2008 (x86_64), gcc version 4.2.3. Of course I'm running
the same gecode version in both machines (gecode-2-1-1)

Despite of I'm getting the same search tree, the number of propagations is
different for some instances of some problems, for instance:


-------- Mandriva
magic-square -c-d 1 -a-d 1 order 7

initial
    propagators:   19
    branchings:    1

Summary
    runtime:       3.040 (3040.000000 ms)
    solutions:     1
    propagations:  7435467
    failures:      481301
    clones:        481365
    commits:       962666
    peak memory:   1214 KB

-----Ubuntu
magic-square -c-d 1 -a-d 1 7

Initial
        propagators:   19
        branchings:    1

Summary
        runtime:       3.870 (3870.000000 ms)
        solutions:     1
        propagations:  7430108
        failures:      481301
        clones:        481365
        commits:       962666
        peak memory:   609 KB


-----Mandriva
partition -a-d 1 -c-d 1 13
Initial
    propagators:   58
    branchings:    1

Summary
    runtime:       0.710 (710.000000 ms)
    solutions:     0
    propagations:  2397328
    failures:      49734
    clones:        49733
    commits:       99466
    peak memory:   569 KB

----ubuntu
partition -c-d 1 -a-d 1 13
Initial
    propagators:   58
    branchings:    1

Summary
    runtime:       1.813 (1813.487000 ms)
    solutions:     0
    propagations:  2397273
    failures:      49734
    clones:        49733
    commits:       99466
    peak memory:   285 KB

---Mandriva
partition -a-d 1 -c-d 1 15

Initial
    propagators:   66
    branchings:    1

Summary
    runtime:       8.060 (8060.000000 ms)
    solutions:     0
    propagations:  26991030
    failures:      546230
    clones:        546229
    commits:       1092458
    peak memory:   682 KB

-----ubuntu
partition -c-d 1 -a-d 1 15

Initial
    propagators:   66
    branchings:    1

Summary
    runtime:       20.200 (20200.376000 ms)
    solutions:     0
    propagations:  26995378
    failures:      546230
    clones:        546229
    commits:       1092458
    peak memory:   342 KB



Can someone explain me this behavior.



Thanks in advance,
Alejandro
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