[PD] opengl performance on osX ; Re: four PS3 Eye on Mac Pro and Pd-ext and GEM

Mathieu Bouchard matju at artengine.ca
Sat May 21 18:06:32 CEST 2011

On Sat, 21 May 2011, cyrille henry wrote:

> from my experience, Gem is 2 times faster on the same computer using 
> ubuntu than osX. thanks to nvidia profiling tools, Nicolas pointed that 
> gem is limited to 50% usage of the GPU. there is certainly a limitation 
> somewhere on osX preventing application to use full performance of the 
> hardware. so, you applications are slower, but the interface will always 
> be smooth...

There's a setting in Gnome/Ubuntu for choosing no effects, normal effects, 
extra effects. This may make a difference. What kind of performance 
difference do you get when you change that setting ? It might explain part 
of what happens on OSX, perhaps (where, afaik, you don't have such a 
setting, and effects level is somewhere between ubuntu's normal and extra 

| Mathieu Bouchard ---- tél: +1.514.383.3801 ---- Villeray, Montréal, QC

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