VMD-L Mailing List

From: Jérôme Hénin (jhenin_at_ifr88.cnrs-mrs.fr)
Date: Fri Mar 25 2011 - 04:40:04 CDT

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
>