VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Thu Nov 17 2011 - 14:13:49 CST

Lam,
  Okay, that clearly indicates that your GPU is running out of memory
when you have several VMD instances running. Can you quickly send me
the startup messages that VMD prints when you run it on your machine?
I should be able to determine a few useful things from the OpenGL and
CUDA messages that VMD prints when it starts up.

Cheers,
  John

On Thu, Nov 17, 2011 at 12:05:18PM -0800, lam nguyen wrote:
> And if I have no VMD running I have:
> Free : 457 Mb
> Free : 458 Mb
> Lam
> On Thu, Nov 17, 2011 at 12:01 PM, lam nguyen <lamvn08_at_gmail.com> wrote:
>
> Sorry, my reply to Peter did not go to the list.
> Yes, I am using Nvidia-provided driver. I have tried quite a few of
> them. The current version is 280.13.
> Here is what I have doing /usr/bin/nvidia-smi -a |grep -i free
> Free : 4 Mb
> Free : 4 Mb
> Lam
>
>
> On Thu, Nov 17, 2011 at 11:30 AM, John Stone <johns_at_ks.uiuc.edu> wrote:
>
> Hi,
> You didn't state what graphics driver you are using, but if you
> aren't
> running the NVIDIA-provided drivers, that would be one of the first
> things
> you should fix. If you're using the open-source drivers that ship
> with
> ubuntu, you are surely bound to encounter various performance
> problems.
> If you have the NVIDIA drivers installed, then please run this command
> and tell me what it says, when you have 2 VMD sessions open and
> running:
> /usr/bin/nvidia-smi -a |grep -i free
>
> Cheers,
> John Stone
> vmd_at_ks.uiuc.edu
> On Thu, Nov 17, 2011 at 09:16:10AM -0800, lam nguyen wrote:
> > Doing this way helps a little bit. I can open 2 windows and
> enlarge them
> > without problem. But when I open the third one, my computer
> almost
> > freezes.
> > Lam
> >
> > On Wed, Nov 16, 2011 at 10:29 PM, Tristan Croll
> <tristan.croll_at_qut.edu.au>
> > wrote:
> >
> > Lam,
> >
> > In that case, *definitely* try disabling the X11 Composite
> extension.
> >
> > sudo gedit /etc/X11/xorg.conf
> >
> > Then add to that file:
> >
> > Section "Extensions"
> > A A A A Option A "Composite" "Disable"
> > EndSection
> >
> > Cheers,
> >
> > Tristan
> >
> > From: owner-vmd-l_at_ks.uiuc.edu [mailto:owner-vmd-l_at_ks.uiuc.edu]
> On Behalf
> > Of lam nguyen
> > Sent: Thursday, 17 November 2011 2:21 PM
> > To: Ajasja LjubetiA:*
> > Cc: vmd-l_at_ks.uiuc.edu
> > Subject: Re: vmd-l: VMD slows down at multiple windows
> > I have VMD 1.9. I have tried running it on ubuntu, kubuntu and
> mint. I
> > installed these three OS' to test which one I like most. I have
> VMD
> > slows-down problem with all three systems. My Nvidia card is
> quadro FX
> > 580. I don't think I run out of memory because I have this
> problem even
> > right after restarting computer.
> >
> > Lam
> > On Tue, Nov 15, 2011 at 1:08 AM, Ajasja LjubetiA:*
> > <ajasja.ljubetic_at_gmail.com> wrote:
> > Hi,
> >
> > I think you forgot toA mentionA some crucial information: Which
> OS are
> > you running, what VMD version and which Nvidia card?
> >
> > so I don't thinkA power is the problem.
> >
> > Yes, if power would be the problem, the computer wouldA
> probablyA just
> > reset. Perhaps you are running out of system or GPU memory?
> > Ajasja
> >
> > On Mon, Nov 14, 2011 at 23:51, lam nguyen <lamvn08_at_gmail.com>
> wrote:
> > Hi all,
> >
> > There is an annoying VMD problem with my desktop. If I open
> several VMD
> > windows, from the third one they slow down a lot. It is a new
> machine so
> > I don't think the power is the problem. Because my 4 years old
> laptop
> > can handle many VMD windows without slowing them down. I wonder
> if this
> > has to do with Nvidia card?
> >
> > Is there anyone having the same trouble?
> >
> > Lam
>
> --
> NIH Resource 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/ Fax: 217-244-6078 

-- 
NIH Resource 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/       Fax: 217-244-6078