From: Thomas Ruge (Thomas.Ruge++at++gmx.de)
Date: 11/15/2000 14:21:34
Hello Daniel,
I had a setup with 3 graphic cards running on linux
with hardware OpenGL-support. I think i wrote about it in the
performer mailing list end of last year or beginning
of this year.
The setup was working with following components:
- 3 Elsa Synergy cards ( 1xAGP,2xPCI ) Permedia 2 chip
- An experimental accelerated-XServer from Xi graphics
At that time ( 9/99 ) it was the one and only
multiscreen OpenGL solution i knew. It was slow
and only a part of the OpenGL-calls were done in hardware.
Unfortunately it was not working with the first Mongoose
release.
Today it should be much more easier with XFree4.0 since
it supports multiscreen and OpenGL support (GLX and DRI modules). .
One key point is that you have to find modern graphic cards
as AGP and PCI cards, since there is no board with more than
one AGP-slot. I would suggest TNT2 cards like the Synergy II
from ELSA, nvidia's driver are working quite properly and
Performer is running fast with these chips. Although the GeForce
cards are faster but i don't know of a PCI-GeForce Card.
The problem is that if you are running bigger applications
your PCI-bus will be full of traffic, especially
if you are using textures extensively or dynamic scenes
which slows down the overall speed of your system.
We are driving another solution, we are clustering our
Performer applications, so that every monitor or beamer
is driven by its own PC, which gives a very nice performance,
much better than with a one-PC-three-card system.
We showed our visualization cluster at the LinuxWorld
in Frankfurt and at the Systems in Munich.
Bye
Thomas
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