I can confirm this behavior fort he performance test at my machine. I'm not sure whether it is caused by the way I start the compiled yade: after running "make install" in my build folder I start yade using "python yadeparallel -j4 --performance" in the ./install/bin folder. "parallel" is the DSUFFIX I added in cmake. I will now try to run some other script (martin-niehoff's dynamic simulation) using an equal command.
-----Ursprüngliche Nachricht----- Von: Yade-dev [mailto:yade-dev-bounces+alexander.eulitz=iwf.tu-berlin...@lists.launchpad.net] Im Auftrag von Christian Jakob Gesendet: Mittwoch, 26. Februar 2014 08:54 An: yade-dev@lists.launchpad.net Betreff: Re: [Yade-dev] parallel collider - testing needed >> There is apparently a problem with your computer/compilation option/other? >> If you run an ordinary simulation with -j4 and many particles do you >> see >> 4 cores used? yes, for normal scripts it is running 4 threads at 4 cores, but --performance assigns all threads to one core it seems... > Is there any difference at all on this machine, between -j1 and -j4? yes, it is faster at -j1: number of bodies 200813 Elapsed 69.9356219769 sec Performance 2.85977295042 iter/sec Extrapolation on 1e5 iters 9.71328083012 hours =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=* Name Count Time Rel. time ------------------------------------------------------------------------------------------------------- ForceResetter 200 1069504us 1.53% InsertionSortCollider 7 21301263us 30.46% InteractionLoop 200 29700514us 42.47% NewtonIntegrator 200 17853603us 25.53% TOTAL 69924885us 100.00% Common time 2067.0501442 s 5037 spheres, velocity= 71.3011948258 +- 0.426132271892 % 25103 spheres, velocity= 18.804595478 +- 1.73479566756 % 50250 spheres, velocity= 10.9461326398 +- 0.367180852894 % 100467 spheres, velocity= 5.45291715221 +- 0.431878602357 % 200813 spheres, velocity= 2.85102513277 +- 0.221541088185 % SCORE: 3959 Number of threads 1 _______________________________________________ Mailing list: https://launchpad.net/~yade-dev Post to : yade-dev@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-dev More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~yade-dev Post to : yade-dev@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-dev More help : https://help.launchpad.net/ListHelp