VMD-L Mailing List

From: Maxim Belkin (mbelkin_at_ks.uiuc.edu)
Date: Fri Oct 24 2014 - 06:41:00 CDT

When you are connected over ssh there is no CVA ("compiled vertex array”) among OpenGL “features”. So, something is different when you ssh.

try ssh -Y

Maxim

> On Oct 24, 2014, at 02:10, Norman Geist <norman.geist_at_uni-greifswald.de> wrote:
>
> 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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