From: Dimi (christop++at++fhw.gr)
Date: 01/21/2005 02:52:10
Hi,
I am an VR engineer, based in Athens working for the Foundation of the
Hellenic World.
We recently purchased a SGI Prism (I think we are the first in Europe)
and are experiencing a few strange situations
when testing with our applications.
SGI Prism: 8 CPU 1.2 Itanium 2, 16 GB Ram, 4 pipe FireGL2 gfax cards,
with compositor.
1)Our application runs slower on the Prism tha it does on a Linux
Machine (P4 2.8, GF4 MX. 512MB), when running our
application on a single pipe. Are there any knows issues witch have to
do with performer and affect the performance with the new Prism.
It is disapointing seeing such an expensive Beast loose from a skinny
mediocre PC.
2)The compositor was bought in order to speed up the rendering on 1
screen, by allowing to divide the screen and
having each of the 4 cards render a portion of it. Unfortunately we DIDI
NOT see any speedup but actually experienced a 4x DECREASE in
fps. When lookin at the Performer stats there eas constantly a texture
download happening which does no exist if you disable the compositor and
use the cards to render on a different pipe (normal setup).
Do you have any experience with such problems?
Might it be a Performer issue with this platform?
Is it a setup problem invlolving the local support engineers?
Thanks
Dimi
Dimi Christopoulos {christop++at++fhw.gr}
VR Software Engineer
Foundation of the Hellenic World
Athens - Greece
Tel. (+30) 21 254 03800 (+30) 21 034 22292
Fax. (+30) 21 254 03838 (+30) 21 034 22272
This archive was generated by hypermail 2b29 : Fri Jan 21 2005 - 02:50:45 PST