VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Thu Mar 21 2013 - 10:43:25 CDT

Bogdan,
  Sorry for the slow reply, I'm out of town at a conference and I haven't
been email accessible for a few days. There was a bug in my code (somehow
a half-finished change got into CVS rather than the right one) which
I will fix when I return home. The next build should work correctly.

Cheers,
  John Stone
  vmd_at_ks.uiuc.edu

On Mon, Mar 18, 2013 at 01:19:09PM +0100, Bogdan Costescu wrote:
> Hi John!
>
> The 1.9.2a20 version seems to have cured the performance issue, but
> not with the default setting. I have to set VMDMAXAASAMPLES to 4 to
> get about to about the same speed as the 2xx drivers.
>
> The VMD startup text doesn't change, still reporting:
>
> Info) [0] GeForce 9400 GT 4 SM_1.1 @ 1.38 GHz, 511MB RAM, KTO, OIO, ZCP
> Info) OpenGL renderer: GeForce 9400 GT/PCIe/SSE2
> Info) Features: STENCIL MSAA(16) MDE CVA MTX NPOT PP PS GLSL(OVFG)
> Info) Full GLSL rendering mode is available.
> Info) Textures: 2-D (8192x8192), 3-D (2048x2048x2048), Multitexture (4)
>
> i.e. the MSAA(16) is still present. When I set VMDMAXAASAMPLES, I see
> printed 5 times:
>
> Info) User-requested OpenGL AA sample depth: 4
>
> but all that follows is again the same (including MSAA(16)). I don't
> know if this is only cosmetic...
>
> But... the above results hold for driver 310.32; if using 313.09, I
> get the slow speed independent of the VMDMAXAASAMPLES setting - but
> this being a beta version might not mean much.
>
> Let me know if you'd like me to test some more.
>
> Cheers,
> Bogdan
>
> On Fri, Mar 15, 2013 at 3:25 PM, John Stone <johns_at_ks.uiuc.edu> wrote:
> > Bogdan,
> > I posted a new test build of VMD, give it a try and let me know
> > if it cures the performance issue you'd observed previously.
> >
> > Cheers,
> > John Stone
> > vmd_at_ks.uiuc.edu 

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