VMD-L Mailing List

From: Axel Kohlmeyer (akohlmey_at_gmail.com)
Date: Tue May 11 2010 - 20:08:25 CDT

On Tue, 2010-05-11 at 19:23 -0500, John Stone wrote:

john,

if the GPUs are configured for "compute-exclusive" mode,
then you cannot access them with any other code for as
long as VMD is running. i have seen this behavior on our
6-GPU node for example with the latest drivers, VMD cvs v
ersion, CUDA-3.0 etc.

cheers,
   axel.

> Hi,
> VMD doesn't "lock" any of the devices. When it starts up it does
> clear the GPU memory and do a brief allocation/clear/deallocation cycle
> designed to catch any unusual GPU behavior during startup. Does ACEMD fail
> while VMD is starting up? What happens if you do a "kill -STOP" on ACEMD,
> then start VMD, than do a "kill -CONT" on ACEMD after VMD prints the startup
> messages?
>
> Cheers,
> John Stone
> vmd_at_ks.uiuc.edu
>
> On Wed, May 12, 2010 at 12:49:54AM +0200, Joakim Swedberg wrote:
> > Hi everybody,
> >
> > I have a problem where I need to run another CUDA accelerated software's
> > at the same time as VMD 1.8.7. The other software ACEMD lets me specify
> > which devices I want to use but I have not been able to find a way to do
> > that in VMD and it locks all devices, As a result the other software
> > always crashes if I run VMD 1.8.7.
> >
> > Any help would be useful
> >
> > Regards
> >
> > Joakim Swedberg
> > BSc (Honours)
> > PhD student
> >
> > ----------------------------------------------------------------------
> >
> > Institute of Health and Biomedical Innovation (IHBI)
> > 60 Musk Avenue
> > Kelvin Grove
> > Queensland 4059
> > Australia
> >
> > http://www.ihbi.qut.edu.au/
> >
> > Phone +61 (0)7 3138 6222
> > Mobile +61 (0)413 165 805
> > Email j.swedberg_at_student.qut.edu.au
> > joakim_swedberg_at_hotmail.com
> >
> > ----------------------------------------------------------------------
> >
> >
> 

-- 
Dr. Axel Kohlmeyer  akohlmey_at_gmail.com
http://sites.google.com/site/akohlmey/
Institute for Computational Molecular Science
Temple University, Philadelphia PA, USA.