VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Thu Oct 23 2003 - 09:46:37 CDT

Dafydd,
  Disable the Axes display in VMD and that will eliminate some of the
performance issue: Display->Axes->Off. Apple's OpenGL implementation has
a performance problem with certain OpenGL calls, and we've made changes
to VMD 1.8.2 (to be released very soon now) which eliminate the observable
performance issues in VMD in all but a few cases. The older Macs didn't have
this problem, this is why people have been emailing about it only recently...

Thanks,
  John Stone
  vmd_at_ks.uiuc.edu

On Thu, Oct 23, 2003 at 01:12:28PM +0100, Dafydd Jones wrote:
> Hi,
> I have recently upgraded my machine from a G3 400 MHz Powerbook to a G4
> 1GHz Powerbook and now VMD 1.8.1 (and 1.8) runs very very slowly on my new
> machine. Does anybody have any idea why this is? Both machines are running
> 10.2.8. The OpenGL renderer on my present machine used by VMD is ATI Radeon
> 9600 OpenGL Engine whereas on my older machine it is Ati Rage 128 Pro OpenGL
> engine. My OpenGL framework on the G4 is OpenGL 1.2.4.10.0 as it is on my
> old machine.
>
> Thanks,
>
> --
> Dafydd Jones PhD (Cantab)
> School of Biosciences
> Biosi-2
> Cardiff University
> Museum Ave.
> Cardiff CF10 3US
> UK
>
> Webpage: www.cf.ac.uk/biosi/research/molecular/staff/djones.html
> Tel. Office +44 (0)29 2087 4290
> Mobile +44 (0)7980 755607
> 

-- 
NIH Resource for Macromolecular Modeling and Bioinformatics
Beckman Institute for Advanced Science and Technology
University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
Email: johns_at_ks.uiuc.edu                 Phone: 217-244-3349              
  WWW: http://www.ks.uiuc.edu/~johns/      Fax: 217-244-6078