VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Tue Apr 19 2011 - 22:26:56 CDT

Jerome, (and anyone else that has encountered similar problems)
  I had filed a bug with NVIDIA a few weeks ago in regards to the problems
a few people had experience with certain combinations of drivers and
application software triggering a scenario where the GPU runs out of memory.
The NVIDIA engineers have been working on fixing these issues and things
should now be noticably better in at least several of the problem cases
with the latest CUDA 4.0 RC2 drivers:
  http://developer.nvidia.com/cuda-toolkit-40

Can you try running the new CUDA 4.0 RC2 drivers (on linux, it is driver
version 270.40) and let me know if you still experience the problems
you described previously?

Cheers,
  John Stone
  vmd_at_ks.uiuc.edu

On Tue, Mar 29, 2011 at 12:33:59AM +0200, Jérôme Hénin wrote:
> On 28 March 2011 23:04, John Stone <johns_at_ks.uiuc.edu> wrote:
> > Out of curiosity, are you using your own compilation of VMD, or are
> > you running the binaries that I provide on our web site?  It only matters
> > insofar as I can then tell NVIDIA which CUDA runtime library is being used.
>
> I am running your binaries.
>
> Cheers,
> Jerome
>
> > Cheers,
> >  John Stone
> >  vmd_at_ks.uiuc.edu
> >
> > On Fri, Mar 25, 2011 at 03:19:59PM +0100, Jérôme Hénin wrote:
> >> I should have said it in the first message: 260.19.36
> >>
> >> Jerome
> >>
> >> On 25 March 2011 15:05, John Stone <johns_at_ks.uiuc.edu> wrote:
> >> >
> >> > 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
> >> >
> >
> > --
> > 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