yade-dev team mailing list archive

[Anton Gladky <gladky.anton@xxxxxxxxx>]

I think, it depends on how many bodies are in simulation.
If you have just 200 spheres, probably the best number of cores will be 1 or
2.

______________________________

Anton Gladkyy


2010/4/29 Janek Kozicki <janek_listy@xxxxx>

> My PC has 8 cores, 2*Opteron 2378.
>
> I have been testing speed with different number of cores. And to my
> surprise I must tell you, that when more than 5 cores are used - the
> speed drastically drops down!
>
> For instance with 4 cores is is steady 200it/sec.
> On 6-8 cores it is 1 it/sec, and occasionally (less than 5% of the
> time) the speed jumps up to 2000it/sec). It is visible also in
> OpenGL window - everything is stalled, and after 10 seconds it
> suddenly moves extremely fast, for 0.5 of sec. Then again everything
> stalls.
>
> --
> Janek Kozicki                               http://janek.kozicki.pl/  |
>
> _______________________________________________
> Mailing list: https://launchpad.net/~yade-dev<https://launchpad.net/%7Eyade-dev>
> Post to     : yade-dev@xxxxxxxxxxxxxxxxxxx
> Unsubscribe : https://launchpad.net/~yade-dev<https://launchpad.net/%7Eyade-dev>
> More help   : https://help.launchpad.net/ListHelp
>