VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Fri May 27 2005 - 15:00:06 CDT

I think the root of the problem there is that he's trying to
run VMD via 'ssh', which encrypts and decrypts both the ssh
text connection as well as the graphics connection. Generally
speaking, you don't want to send graphics through 'ssh', as it
adds a significant amount of latency to the rendering.
It's much faster (but less safe) to use the old 'xhost' commands
and 'setenv DISPLAY remotemachine:0.0' to remote display VMD,
though even that will be significantly slower than displaying
locally. VMD 1.8.3 has a new Display->Cachemode->On option
that attempts to store the majority of the displayed molecular
scene in a set of OpenGL read-only display lists for faster
remote rendering. Give that a try and see if it partially
addresses your problems after you try using a direct connection
rather than 'ssh'.

  John Stone
  vmd_at_ks.uiuc.edu

On Fri, May 27, 2005 at 04:50:09PM -0300, Jorge Hernandez Fernandez wrote:
>
> Graphic card (????), drivers (?????)........
> We nave a Quadro NVS (nVidia drivers) with GLUT and all is O.K.......
>
> --
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> ---------- Original Message -----------
> From: Cetin Baloglu <baloglu_at_gmail.com>
> To: vmd-l_at_ks.uiuc.edu
> Sent: Wed, 25 May 2005 12:04:55 +0300
> Subject: Re: vmd-l: bad resolution and too slow on mandrake 10.0
>
> > Hi Matteo,
> >
> > VMD requires opengl drivers to work properly. Can you check if your
> > mesa drivers installed in Mandrake (rpm -qa |grep -i mesa). As long
> > as I know opengl is not required for pymol.
> >
> > Cetin Baloglu
> >
> > On 5/25/05, matteo.pennestri_at_virgilio.it
> > <matteo.pennestri_at_virgilio.it> wrote:
> > > I have a little problem with vmd on my linux Mandrake 10.0
> > > I have installed vmd1.8.3 but when I run the program the risolution is very
> > > bad. (I have also installed pymol but instead this programa has a good
> resolution).
> > > If I run vmd 1.8.3 by ssh from a linux redhat it looks good but too slow.
> > > Is there some graphics configuration(for exemple that I can read on the
> > > redhat machine) to resolve my problem?
> > > Many thans.....Matteo
> > >
> > >
> > >
> >
> > --
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> ------- End of Original Message -------
>
>
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-- 
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
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