VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Fri Mar 25 2011 - 09:05:39 CDT

Jerome,
  What NVIDIA driver version are you using?

Cheers,
  John

On Fri, Mar 25, 2011 at 10:40:04AM +0100, Jérôme Hénin wrote:
> Hi John,
>
> On 25 March 2011 03:02, John Stone <johns_at_ks.uiuc.edu> wrote:
> >
> > Jerome,
> >  Are you using the GPU for anything besides VMD, like Google Chrome?
>
> I read about that issue, so I closed it before trying again.
>
> > I've had a few people telling me lately that some other apps have started
> > interfering with VMD if the GPU doesn't have much RAM.  I've reported
> > a driver bug to NVIDIA about this already, and they are working on it so
> > that at least the error codes returned are more indicative of the real
> > problem.  How long is the first VMD running before you start the second
> > one?
>
> That doesn't change anything. If I just start them one after the
> other, without loading any data, I get the same result.
>
> I have never been a fan of running multiple VMD sessions anyway, but I
> do mind segfaults :-)
>
> Thanks,
> Jerome
>
> > On Wed, Mar 23, 2011 at 03:40:20PM +0100, Jérôme Hénin wrote:
> >> Hi all,
> >>
> >> I am running VMD 1.9 on a Linux x86_64 machine with an nVidia GPU and
> >> the assorted proprietary driver. The first instance says:
> >>
> >> Info) VMD for LINUXAMD64, version 1.9 (March 14, 2011)
> >> (...)
> >> Info) Detected 1 available CUDA accelerator:
> >> Info)   [0] Quadro FX 3700     14 SM_1.1 @ 1.25 GHz,  511MB RAM, KTO, OIO, ZCP
> >> Info) OpenGL renderer: Quadro FX 3700/PCI/SSE2
> >> Info)   Features: STENCIL MSAA(16) MDE CVA MTX NPOT PP PS GLSL(OVF)
> >> Info)   Full GLSL rendering mode is available.
> >> Info)   Textures: 2-D (8192x8192), 3-D (2048x2048x2048), Multitexture (4)
> >>
> >> If I try to start a second instance of VMD though, it says:
> >>
> >> Info) Creating CUDA device pool and initializing hardware...
> >> Warning) thread[0] can't init GPU[0] found by device query
> >> Warning) CUDA error: no CUDA-capable device is available
> >> Segmentation fault
> >>
> >> I don't remember this happening with previous versions. Any ideas?
> >>
> >> Cheers,
> >> Jerome
> >
> > --
> > 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
> > 

-- 
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