[Bf-committers] OpenMP on osx

Mats Holmberg mats.holmberg at 2me.fi
Tue Aug 16 13:06:45 CEST 2011

Oh yes!

I can confirm. It has been a problem for a long time, I first noticed it about six months ago when I got a new machine. It's been discussed over at IRC, but no resolutions yet.

My Mac Pro cannot really be used for simulations at all, my MacBook Pro is a lot faster. This is a bit weird since my pro is an 8-core machine, while the laptop is dual core.

I tried compile using newer gcc versions through macports, but always ran into (for me) unsolvable errors.


On 16.8.2011, at 13.54, Tobias Kummer wrote:

> Hey there!
> I just realized that when using an OpenMP enabled build on osx (cmake), 
> all simulations and baking run terribly slow. When I compile the same 
> revision with OpenMP disabled, it uses one core at 100% and is MUCH 
> faster. Can anyone confirm this? Are there known problems with OpenMP on 
> OSX?
> Greets,
> Tobi
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