On 10/20/2011 07:18 AM, Mats Holmberg wrote: > It's dodgy still. It's best to try different setting and see what works best > (or least bad, that is). > > On my Mac Pro, at best, Blender smoke sim utilizes 6-7 % of my cpu. That's > with 16 threads (8 real, 8 virtual cores). Fluids are the same. > > I don't see any change, no matter what I put in the set_simulation_threads > app. In fact, for some reason even setting the environment variable > OMP_NUM_THREADS doesn't seem to work anymore. > > I still use my dual core Macbook Pro for all sims, it's about ten times > faster than my 8-core desktop machine!
Maybe it's related to a similar problem I saw with volume rendering preprocessing, see http://projects.blender.org/tracker/?func=detail&atid=498&aid=28728&group_id=9 You could do some testing similar to what I did in the bug report above (# of threads -> total time). If that shows a similar performance decline it could be a problem with the threading in the smoke sim Regards, Paul _______________________________________________ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
