From: John Stone (
Date: Tue Jun 28 2016 - 11:34:40 CDT

  Hi, sorry for the slow reply, I just returned from international travel.

If you save your VMD state, possibly editing file paths to ensure
they load correctly on your compute nodes, you should be able to render the
exact same scene on your GPU-accelerated cluster using the built-in
"TachyonLOptiXInternal" ray tracing engine. You'll need to ensure that
you're running the OptiX-enabled version of VMD 1.9.2 or 1.9.3 on your
cluster nodes, but otherwise it is the same as what you would do when
rendering via "TachyonInternal". We regularly render large movies in
parallel on remote supercomputers this way. Let me know if you need
further assistance getting this working.

  John Stone

On Fri, Jun 24, 2016 at 01:52:47PM +0200, Ajasja Ljubeti?? wrote:
> Hi!
> In principle you can set the viewpoint and all the representation
> attributes from Tcl. (Log to console is invaluable for such purposes).
> Ypu can also open a state file (it's just normal TCL). But usually paths
> are saved as absolute, which might be a problem if you are moving stuff to
> an new computer.
> Then you would only have to send the the script and pdb file for each
> frame to the nodes and run the rendering from the command line.
> Best,
> Ajasja
> On 24 June 2016 at 12:05, Kevin C Chan <[1]>
> wrote:
> Dear Users,
> I have some nodes with GPU cards usually for MD simulations. As tachyon
> rendering of VMD seems to support GPU acceleration and tachyon rendering
> of transparent is SOOOO slow, I am wondering whether VMD could save
> perfectly a viewpoint (maybe as a visualization state?) and then being
> able to be sourced on a CLI node with a tachyon rendering tcl script. In
> this way, single or even multiple renders with transparent components
> could be done easily by scripting.A
> Any experience shared would be greatly appreciated.
> Regards,
> Kevin
> City University of Hong Kong
> References
> Visible links
> 1.

NIH Center for Macromolecular Modeling and Bioinformatics
Beckman Institute for Advanced Science and Technology
University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801           Phone: 217-244-3349