[Chimera-users] benchmark scores

Greg Couch gregc at cgl.ucsf.edu
Wed Sep 5 13:23:14 PDT 2007

On Wed, 5 Sep 2007, Tom Goddard wrote:

>  I've seen two machines (laptops) with Nvidia NVS graphics cards that
> had relatively low Chimera graphics rendering scores.  Greg Couch, a
> Chimera developer says the NVS cards are intended for 2 dimensional
> graphics.  The graphics was much faster on one of the machines after
> changing some driver settings.  I think one change was to turn "triple
> buffering" off but I'm not sure that is what improved the speed.
> Perhaps Greg remembers what changes on John Irwin's machine improved the
> speed.
>    Tom

The change was to reset the driver settings to their defaults.  As for any 
graphics card with limited memory, do not turn on memory consuming options 
unless you need them.  So for a Quadro NVS, turn off antialiasing, turn 
off triple buffering, turn on unified back/depth buffer, turn off stereo, 
and turn off overlay.  Turning off antialiasing will have the biggest 
effect on performance -- you can turn it off on the chimera command line 
with the --nomultisample option instead of modifying the driver settings.

 	- Greg

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