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[behzad majidi <question246489@xxxxxxxxxxxxxxxxxxxxx>]

Question #246489 on Yade changed:
https://answers.launchpad.net/yade/+question/246489

behzad majidi posted a new comment:

Hey,

Vaclav,

I disabled hyperthreading but the problem still exists.

performance test, -j1:

Common time  1106.10648513 s

5037  spheres, velocity= 134.729791697 +- 1.3492293698 %
25103  spheres, velocity= 38.3840982244 +- 0.0875353816257 %
50250  spheres, velocity= 21.9504247502 +- 0.651470489915 %
100467  spheres, velocity= 10.5295197834 +- 0.083916737082 %
200813  spheres, velocity= 4.51691106855 +- 0.539099751985 %

SCORE: 7243
Number of threads  1

============================
performance test, -j4:

Common time  1171.67568803 s

5037  spheres, velocity= 123.198225677 +- 0.373595662935 %
25103  spheres, velocity= 36.2813191453 +- 0.519132353153 %
50250  spheres, velocity= 21.0055649514 +- 0.314226953398 %
100467  spheres, velocity= 9.96785738725 +- 0.0806565409034 %
200813  spheres, velocity= 4.29635697314 +- 0.258128280636 %

SCORE: 6838
Number of threads  4

It seems, as Bruno said, there's a bug here!

Bruno; Yeah, thanks, I will check it out

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