Le 23/05/2011 13:24, Nicolas Montgermont a écrit :
Hello all,
I didn't had time to make heavy testing.
But I tried some things today and it seems finally I manage to go further than
50% of the GPU.
You can see the evolution of my graph here if you want:
http://nim.on.free.fr/data/gem_perf.png
It is with different testing : changing resolution / frame / options
Auto-hiding the dock doesn't seems to change a thing, and sending fullscreen
before creating the window did not significantly change the GPU usage.
I'll try to do some more professional testing with Cyrille tomorrow.
What is the best way to test the GPU usage, drawing numerous squares?
when rendering many squares, the bottle neck is locate on the PCI bus, for the
communication between cpu and gpu.
pure gpu computing can be tested with heavy shader usage.
c
There is also many different parameters to monitor and i can display some
others if you prefer.
The tool i am using is a developper tool from apple : OpenGl Driver Monitor
Nicolas
Le 22/05/11 19:02, chris clepper a écrit :
Does the performance improve in fullscreen? I can see having to share time with
the rest of the GUI, but in full screen there is nothing else taking time.
Sat, May 21, 2011 at 7:12 AM, cyrille henry <c...@chnry.net
<mailto:c...@chnry.net>> wrote:
hello,
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...
Cyrille
--
http://nim.on.free.fr
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