Well, if you want the commandline options to work, you will have to use a setup as in the Gecode example (check Chapter 3 in MPG). If you do it otherwise, read Section 9.3.1 in MPG.
Christian -- Christian Schulte, www.gecode.org/~schulte Professor of Computer Science, KTH, <mailto:[email protected]> [email protected] Expert Researcher, SICS, <mailto:[email protected]> [email protected] From: [email protected] [mailto:[email protected]] On Behalf Of mehdi m Sent: Monday, March 16, 2015 8:59 AM To: Guido Tack; [email protected] Subject: Re: [gecode-users] Parallel search I looked for the task manager and i found that just one core is used. Do i need to add something else to the code ? Thanks. _____ Subject: Re: [gecode-users] Parallel search From: [email protected] Date: Mon, 16 Mar 2015 08:44:27 +1100 CC: [email protected] To: [email protected] Have a look at the Windows task manager, can you see if your model.exe is actually making use of all four cores? If yes, it is possible that it's just a peculiarity of your model, i.e., that it simply doesn't parallelise well. You can try different search strategies, that can sometimes make a difference for parallelisation as well. Cheers, Guido On 16 Mar 2015, at 2:28 am, mehdi m <[email protected]> wrote: Hi everyone, I'm trying to make the serach more efficient using several threads (Parallel seacrh) presented in section 9.2 in MPG. On my machine with four cores and employing gecode 4.0.0, i use the option : model.exe -threads 4 I'm using the serach engine BAB and calling branch (home, Var, INT_VAR_DEGREE_MAX(), INT_VAL_MAX() ); But it seems that it does not work, the runtime still the same without this option. If you have some details about this, it will be helpful. Thanks _______________________________________________ Gecode users mailing list [email protected] https://www.gecode.org/mailman/listinfo/gecode-users
_______________________________________________ Gecode users mailing list [email protected] https://www.gecode.org/mailman/listinfo/gecode-users
