VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Mon Apr 17 2017 - 07:59:29 CDT

Hi,
  Try setting the environment variable VMDNOOSPRAY to 1 prior to launching VMD:
Bourne/bash shell:
  export VMDNOOSPRAY=1
csh/tcsh:
  setenv VMDNOOSPRAY 1

That should prevent VMD from instantiating the OSPRay renderer classes
that expect CPUs with >= SSE 4.1...

For the next VMD release I'm working on making VMD do extra checks to
prevent this from being necessary. This was an unexpected surprise with
the behavior of OSPRay 1.[12] that really just wasn't documented, so the
VMD 1.9.3 release didn't have its own tests to avoid this problem.

Cheers,
  John Stone
  vmd_at_ks.uiuc.edu

On Fri, Apr 14, 2017 at 09:07:32AM -0400, Steven Howell wrote:
> Greetings,
> I am installing version 1.9.3 of VMD. The installation completed fine.Â
> When I run `vmd` I get an error about a system incompatibility with
> OSPRay:
>
> /home/schowell/data/myPrograms/vmd/vmd_LINUXAMD64:
> /usr/lib/nvidia-375/libGL.so.1: no version information available
> (required by /home/schowell/data/myPrograms/vmd/vmd_LINUXAMD64)
> Info) VMD for LINUXAMD64, version 1.9.3 (November 30, 2016)
> Info) [1]http://www.ks.uiuc.edu/Research/vmd/ Â Â Â Â Â Â Â Â Â
> Â Â Â Â
> Info) Email questions and bug reports to [2]vmd_at_ks.uiuc.edu    Â
> Â Â
> Info) Please include this reference in published work using VMD: Â Â
> Info)   Humphrey, W., Dalke, A. and Schulten, K., `VMD - Visual  Â
> Info) Â Â Molecular Dynamics', J. Molec. Graphics 1996, 14.1, 33-38.
> Info) -------------------------------------------------------------
> Info) Multithreading available, 4 CPUs detected.
> Info) Â CPU features: SSE2Â
> Info) Free system memory: 19GB (80%)
> Info) Creating CUDA device pool and initializing hardware...
> Info) Detected 1 available CUDA accelerator:
> Info) [0] GeForce GTX 750 Ti  5 SM_5.0 @ 1.15 GHz, 2.0GB RAM, KTO, AE1,
> ZCP
> 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 750 Ti/PCIe/SSE2
> Info) Â Features: STENCIL MSAA(4) MDE CVA MTX NPOT PP PS GLSL(OVFGS)Â
> Info) Â Full GLSL rendering mode is available.
> Info) Â Textures: 2-D (16384x16384), 3-D (2048x2048x2048), Multitexture
> (4)
> Info) Detected 1 available TachyonL/OptiX ray tracing accelerator
> Info) Â Compiling 1 OptiX shaders on 1 target GPU...
> terminate called after throwing an instance of 'std::runtime_error'
> Â what(): Â Error. OSPRay only runs on CPUs that support at least
> SSE4.1.
> Abort (core dumped)
>
> Is there a way to disable OSPRay? I selected the "LINUX_64 OpenGL, CUDA,
> OptiX, OSPRay" install option as I do have a CUDA card and would like to
> take advantage of that. Should I select a different download or revert
> to version 1.9.2 of VMD?
> Steven C. Howell, Ph.D.
> Physicist
> Neutron Condensed Matter Science
> NIST Center for Neutron Research
> National Institute of Standards and Technology
> 100 Bureau Dr. STOP 6102
> Gaithersburg, MD 20899-8320
> [3](301) 975-4854
> [4][IMG][5][IMG][6][IMG][7][IMG]
>
> References
>
> Visible links
> 1. http://www.ks.uiuc.edu/Research/vmd/
> 2. mailto:vmd_at_ks.uiuc.edu
> 3. file:///tmp/tel:%28301%29%20975-4854
> 4. https://www.linkedin.com/in/stevencraighowell
> 5. https://github.com/StevenCHowell
> 6. http://stackoverflow.com/users/3585557/steven-c-howell?tab=profile
> 7. https://twitter.com/StevenCHowell 

-- 
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/