[Bf-committers] [Bf-blender-cvs] SVN commit: /data/svn/bf-blender [13774] trunk/blender/source: automatic threads, next to the Threads button, so you can set threads to use whatever the system has, useful in the studio with 2, 4, 8 core systems when sharing files.

[Joe Eagar]

Campbell Barton wrote:
> Revision: 13774
>           http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=13774
> Author:   campbellbarton
> Date:     2008-02-19 23:23:21 +0100 (Tue, 19 Feb 2008)
>
> Log Message:
> -----------
> automatic threads, next to the Threads button, so you can set threads to use whatever the system has, useful in the studio with 2,4,8 core systems when sharing files.
>
>   
BTW, standard is usually to use number of cores + 1, as this takes 
advantage of the way schedulers work and also things like hyperthreading.

Actually, in my own tests (and other's) having lots and lots of threads 
(like 4-5 for my single core systems) seems to be a lot faster then the 
normal number of CPUs + 1.  However, there's been no rigorous testing of 
this phenomenon that I know of, so I'd recommend following the CPUs+1 rule.

Joe