VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Wed May 12 2004 - 14:13:31 CDT

Olga,
  Copying and pasting behavior depends on your windowing system,
but I'm assuming that since you're on Linux and appear to be using
XFree86, that you're getting a normal xterm, in which case the
copy/paste feature is engaged by highlighting text with the mouse,
then pressing the middle mouse button in a different terminal
window to paste it. Some apps/window managers have extra copy/paste
menu items however.

Regarding the performance issues you're having:
  The root of your problem is that you're not getting hardware
accelerated graphics at all presently. VMD 1.8.1 was more tolerant
of software renderers than VMD 1.8.2 is. With a small amount of effort,
you should be able to get your machine running with hardware acceleration,
and VMD will run 20 to 50 times faster than it ever has before on your
particular machine. That's the real solution to your problem. From the
information you've emailed previously, it just appears that you have some
minor video card configuration problems and that solving them will give
you a TREMENDOUS speed boost. You'll be amazed how much faster VMD will
run once you fix the video driver misconfiguration problem on your
machine.

Thanks,
  John Stone
  vmd_at_ks.uiuc.edu

On Tue, May 11, 2004 at 02:38:39PM -0700, Olya Kravchenko wrote:
> John, is there any way to copy-paste from vmd console? Ctrl-C/Ctrl-V do not
> work, and when I run glzinfo I have to many messages, I cannot type them all.
> I tried to create log file but messages weren't copied there. Is there any
> way to run glx such that the output is saved in log file?
>
> What is XFree86 and why do I need to update it? Before I installed 1.8.2 I
> just removed the folder with 1.8.1 version and nothing else, and then
> downloaded and installed newer version.
>
> Olga
>
>
>
> On Tuesday 11 May 2004 12:19 pm, John Stone wrote:
> > Olga,
> > The source of your problem is indicated clearly by the VMD
> > startup messages:
> > Xlib: extension "XFree86-DRI" missing on display ":0.0".
> >
> > That is the cause of your slow VMD performance. The result of that
> > error is that your system is using the fallback OpenGL implementation
> > which in this case is Mesa-based software rendering.
> >
> > What do you get if you run 'glxinfo' on that system?
> >
> > John Stone
> > vmd_at_ks.uiuc.edu
> >
> > On Tue, May 11, 2004 at 11:21:22AM -0700, Olya Kravchenko wrote:
> > > Hi John! Here is what I have on the console window:
> > >
> > > Info) Multithreading available, 2 CPUs detected.
> > > Xlib: extension "XFree86-DRI" missing on display ":0.0".
> > > Info) OpenGL renderer: Mesa GLX Indirect
> > > Info) Features: STENCIL RN MTX TCM
> > > Info) Textures: 2-D (2048x2048), 3-D (0x0x0), Multitexture (6)
> > > vmd >
> > >
> > > Olga
> > >
> > > On Tuesday 11 May 2004 07:01 am, John Stone wrote:
> > > > Hi Olga,
> > > > Can you send me the text that VMD prints in your text console when it
> > > > starts up? (The OpenGL messages are what I'm specifically interested
> > > > in).
> > > >
> > > > Thanks,
> > > > John Stone
> > > > vmd_at_ks.uiuc.edu
> > > >
> > > > On Mon, May 10, 2004 at 02:35:36PM -0700, Olya Kravchenko wrote:
> > > > > Hi everyone! I had just upgraded to 1.8.2 version of vmd and it works
> > > > > extremely slow, even though 1.8.1 worked perfectly well. Can someone
> > > > > tell me what might be a possible reason for that and what can I do to
> > > > > make it work faster?
> > > > >
> > > > > Thanks!
> > > > > Olga 

-- 
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