Scott,

        Not at all.  The only way to increase ray tracing speed is to
upgrade your CPU.  I think a 100-150 Ghz Pentium 8 is just about
optimal.

You can also tweek some of the parameters:

Increasing the hash_max setting to 160 or 180 can improve raytracing of
complex scenes, if you have lots of RAM.

Disabling shadows (set ray_shadow,0) will speed things up.

Hiding lines is important, if you can't see them underneath other
geometries anyway.

Warren

--
mailto:[email protected]
Warren L. DeLano, Ph.D. 
Principal
DeLano Scientific LLC
Voice (650)-346-1154 
Fax   (650)-593-4020
 

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Scott
Classen
Sent: Tuesday, April 22, 2003 5:48 PM
To: [email protected]
Subject: [PyMOL] Will a faster graphics card speed up ray tracing?

Warren,
        Does PyMOL ray tracing speed depend on the graphics card? I am
curious 
what factors (hardware or software) effect rendering speed.
Thanks,
Scott

==============================================
   Scott Classen, Ph.D.
   [email protected]
   University of California, Berkeley
   Department of Molecular & Cell Biology
   237 Hildebrand Hall #3206
   Berkeley, CA 94720-3206
   LAB 510.643.9491
   FAX 510.643.9290
==============================================



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