Stefan Eilemann schrieb:
On 3. Jun 2009, at 14:49, bhulliger wrote:
If we start the first configuration, the framerate is about 17 fps
only. The
strange thing is, that the framerate increases if we remove pipe(s)
from the
configuration. It seems as if the whole scenegraph is rendered on
each pipe,
which is not really the purpose of Equalizer I think.
Did anyone experience similar problems?
This can have multiple causes:
- CPU/Memory contention: use the task manager (or better tool) to
analyze this
Ubuntu reports well spread CPU usage (around 50%-60% for all 4 cores
with a simple OSG model but fully 100% with eVolve. This results into
1-2 FPS with eVolve)
- Serialization of the draw calls: Observe the statistics
What exaclty do you mean with "Serialisation"? The statistics report
long green boxes and sometimes a bigger red box.
- Bad multi-threading driver support: try four nodes on the local
machine, try 185.x driver
W'll try this l8er...
- Lock contention in osg render traversal: imo unlikely
eVolve is slow as well, probably not an osg problem
Furthermore, the Quadros look a bit bored while rendering. The GPU-Temp
does never hit the 70°C border (btw: does anyone know a good nvidia GPU
measurement tool for linux?). Maybe this is because we do not use the
SLI tech. Any experience with SLI/Equalizer out there?
Thank you!
Jonas Walti & Crew
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