VMD-L Mailing List

From: Norman Geist (norman.geist_at_uni-greifswald.de)
Date: Fri Oct 24 2014 - 02:10:23 CDT

Here my output:

crw-rw-rw- 1 root root 195, 0 Oct 23 15:18 /dev/nvidia0
crw-rw-rw- 1 root root 195, 1 Oct 23 15:18 /dev/nvidia1
crw-rw-rw- 1 root root 195, 255 Oct 23 15:18 /dev/nvidiactl
crw-rw-rw- 1 root root 250, 0 Oct 23 15:24 /dev/nvidia-uvm

I have the latest nvidia drivers installed.
Any idea ?

Norman Geist.

> -----Ursprüngliche Nachricht-----
> Von: John Stone [mailto:johns_at_ks.uiuc.edu]
> Gesendet: Donnerstag, 23. Oktober 2014 19:35
> An: Maxim Belkin
> Cc: Norman Geist; VMD Mailing List
> Betreff: Re: vmd-l: Tachyon-Optix failure when SSH X11
>
> Hi,
> I wonder if the file permissions on the GPU device nodes
> are set such that they are not necessarily accessible if you're not
> logged into the console? What are the permissions on the
> /dev/nvidia* devices?:
>
> % ls -al /dev/nvidia*
> crw-rw-rw- 1 root root 195, 0 Oct 23 11:51 /dev/nvidia0
> crw-rw-rw- 1 root root 195, 1 Oct 23 11:51 /dev/nvidia1
> crw-rw-rw- 1 root root 195, 2 Oct 23 11:51 /dev/nvidia2
> crw-rw-rw- 1 root root 195, 255 Oct 23 11:51 /dev/nvidiactl
> crw-rw-rw- 1 root root 252, 0 Oct 23 12:05 /dev/nvidia-uvm
>
> Cheers,
> John
>
>
> On Thu, Oct 23, 2014 at 11:15:25AM -0500, Maxim Belkin wrote:
> > I did a quick test: I get an error (different one, pasted below) when
> I use OptiX over ssh on a machine where I'm not logged in to an X11
> windowing system. If I am, however, OptiX over ssh works fine.
> >
> > Info) VMD for LINUXAMD64, version 1.9.2beta2optixtest1 (October 11,
> 2014)
> > Info) http://www.ks.uiuc.edu/Research/vmd/
> > Info) Email questions and bug reports to vmd_at_ks.uiuc.edu
> > Info) Please include this reference in published work using VMD:
> > Info) Humphrey, W., Dalke, A. and Schulten, K., `VMD - Visual
> > Info) Molecular Dynamics', J. Molec. Graphics 1996, 14.1, 33-38.
> > Info) -------------------------------------------------------------
> > Info) Multithreading available, 16 CPUs detected.
> > Info) Free system memory: 53302MB (82%)
> > Info) Creating CUDA device pool and initializing hardware...
> > Info) Detected 1 available CUDA accelerator:
> > Info) [0] GeForce GTX 770 8 SM_3.0 @ 1.08 GHz, 2.0GB RAM, KTO,
> AE1, ZCP
> > Info) Detected 1 available TachyonL/OptiX ray tracing accelerator
> > Info) OpenGL renderer: NVIDIA GeForce GT 330M OpenGL Engine
> > Info) Features: STENCIL MSAA(4) MDE MTX NPOT PP PS
> > Info) GLSL rendering mode is NOT available.
> > Info) Textures: 2-D (8192x8192), 3-D (2048x2048x2048), Multitexture
> (8)
> > Info) Dynamically loaded 2 plugins in directory:
> > Info) /home/mbelkin/lib_vmd/vmd/plugins/LINUXAMD64/molfile
> > ....
> > Info) Ambient occlusion enabled.
> > Info) Shadow rendering enabled.
> > ERROR) OptiX error: Invalid context (Details: Function "RTresult
> _rtContextCompile(RTcontext)" caught exception: Unable to set the CUDA
> device., [3735714]) (OptiXRenderer.C:986
> > OptiXRenderer) An error occured compiling the context. Rendering is
> aborted.
> >
> >
> >
> > > On Oct 23, 2014, at 10:48 AM, Norman Geist <norman.geist_at_uni-
> greifswald.de> wrote:
> > >
> > > Hi John,
> > >
> > > Yes, using it locally works fine, here the output:
> > >
> > > Local:
> > >
> > > Info) VMD for LINUXAMD64, version 1.9.2beta1 (September 12, 2014)
> > > Info) http://www.ks.uiuc.edu/Research/vmd/
> > > Info) Email questions and bug reports to vmd_at_ks.uiuc.edu
> > > Info) Please include this reference in published work using VMD:
> > > Info) Humphrey, W., Dalke, A. and Schulten, K., `VMD - Visual
> > > Info) Molecular Dynamics', J. Molec. Graphics 1996, 14.1, 33-38.
> > > Info) -------------------------------------------------------------
> > > Info) Multithreading available, 64 CPUs detected.
> > > Info) Free system memory: 117456MB (90%)
> > > Info) Creating CUDA device pool and initializing hardware...
> > > Info) Detected 1 available CUDA accelerator:
> > > Info) [0] GeForce GTX 660 5 SM_3.0 @ 1.03 GHz, 2.0GB RAM, KTO,
> AE1, ZCP
> > > Info) Detected 1 available TachyonL/OptiX ray tracing accelerator
> > > Warning) Detected X11 'Composite' extension: if incorrect display
> occurs
> > > Warning) try disabling this X server option. Most OpenGL drivers
> > > Warning) disable stereoscopic display when 'Composite' is enabled.
> > > Info) OpenGL renderer: GeForce GTX 660/PCIe/SSE2
> > > Info) Features: STENCIL MSAA(4) MDE CVA MTX NPOT PP PS
> GLSL(OVFGS)
> > > Info) Full GLSL rendering mode is available.
> > > Info) Textures: 2-D (16384x16384), 3-D (2048x2048x2048),
> Multitexture (4)
> > > Info) Dynamically loaded 2 plugins in directory:
> > > Info) /alfred/bin/vmd/vmd-1.9.2b1/plugins/LINUXAMD64/molfile
> > > after#0
> > > vmd >
> > > [...]
> > > vmd > Info) Rendering current scene to 'vmdscene.ppm' ...
> > > Total OptiX rendering time: 0.9 sec
> > > Info) Executing post-render cmd 'display vmdscene.ppm' ...
> > >
> > > SSH Forwarded:
> > >
> > > Info) VMD for LINUXAMD64, version 1.9.2beta1 (September 12, 2014)
> > > Info) http://www.ks.uiuc.edu/Research/vmd/
> > > Info) Email questions and bug reports to vmd_at_ks.uiuc.edu
> > > Info) Please include this reference in published work using VMD:
> > > Info) Humphrey, W., Dalke, A. and Schulten, K., `VMD - Visual
> > > Info) Molecular Dynamics', J. Molec. Graphics 1996, 14.1, 33-38.
> > > Info) -------------------------------------------------------------
> > > Info) Multithreading available, 64 CPUs detected.
> > > Info) Free system memory: 117364MB (90%)
> > > Info) Creating CUDA device pool and initializing hardware...
> > > Info) Detected 1 available CUDA accelerator:
> > > Info) [0] GeForce GTX 660 5 SM_3.0 @ 1.03 GHz, 2.0GB RAM, KTO,
> AE1, ZCP
> > > Info) Detected 1 available TachyonL/OptiX ray tracing accelerator
> > > Warning) Detected X11 'Composite' extension: if incorrect display
> occurs
> > > Warning) try disabling this X server option. Most OpenGL drivers
> > > Warning) disable stereoscopic display when 'Composite' is enabled.
> > > Info) OpenGL renderer: GeForce GTX 660/PCIe/SSE2
> > > Info) Features: STENCIL MSAA(4) MDE MTX NPOT PP PS GLSL(OVFG)
> > > Info) Full GLSL rendering mode is available.
> > > Info) Textures: 2-D (16384x16384), 3-D (2048x2048x2048),
> Multitexture (4)
> > > Info) Dynamically loaded 2 plugins in directory:
> > > Info) /alfred/bin/vmd/vmd-1.9.2b1/plugins/LINUXAMD64/molfile
> > > after#0
> > > vmd >
> > > [...]
> > > Info) Rendering current scene to 'vmdscene.ppm' ...
> > > ERROR) OptiX error: Unknown error (Details: Function "RTresult
> > > _rtContextLaunch2D(RTcontext, unsigned int, RTsize, RTsize)" caught
> > > exception: Encountered a CUDA error: cuGLGetDevices() returned
> (201):
> > > Invalid context, [3801520]) (OptiXRenderer.C:1002
> > > OptiX: An error occured in AS generation. Rendering is aborted.
> > > Total OptiX rendering time: 0.8 sec
> > > Info) Executing post-render cmd 'display vmdscene.ppm' ...
> > > display: improper image header `vmdscene.ppm' @
> > > error/pnm.c/ReadPNMImage/295.
> > >
> > >
> > > Norman Geist.
> > >
> > >> -----Ursprüngliche Nachricht-----
> > >> Von: John Stone [mailto:johns_at_ks.uiuc.edu]
> > >> Gesendet: Donnerstag, 23. Oktober 2014 17:30
> > >> An: Norman Geist
> > >> Cc: VMD Mailing List
> > >> Betreff: Re: vmd-l: Tachyon-Optix failure when SSH X11
> > >>
> > >> Norman,
> > >> Do you get a particular error message? I wouldn't expect it to
> > >> matter
> > >> if you're redirecting X to a remote display, at least in the OptiX
> code
> > >> paths I'm actually using. I have run OptiX renderings with no
> display,
> > >> e.g. with VMD using "-dispdev text" without any problems, so I'm
> > >> puzzled
> > >> why the remote display would matter. When you're remote
> displaying,
> > >> does
> > >> VMD identify the CUDA devices in the machine correctly? I assume
> you
> > >> have
> > >> also tested this same machine and when running to a local display
> it
> > >> works fine?
> > >>
> > >> Cheers,
> > >> John Stone
> > >> vmd_at_ks.uiuc.edu
> > >>
> > >> On Thu, Oct 23, 2014 at 05:01:31PM +0200, Norman Geist wrote:
> > >>> Just want to report that using the Tachyon Optix Renderer
> doesn't
> > >> work
> > >>> when redirected over SSH.
> > >>>
> > >>> - cheers -
> > >>>
> > >>>
> > >>>
> > >>> Norman Geist
> > >>>
> > >>> ---------------------------------------------------------------
> ---
> > >> ---------
> > >>>
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> > >> --
> > >> NIH Center 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/
> > >
> > >
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> --
> NIH Center 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/ 

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