VMD-L Mailing List

From: Norman Geist (norman.geist_at_uni-greifswald.de)
Date: Wed Nov 26 2014 - 02:32:21 CST

Hey John,

The 1st thing that came to my mind when I tried the interactive Tachyon was:
"Cool" ;D
I didn't really understood how the depth-of-field blur is supposed to work,
maybe it only shows effect
on rather large systems which actually have a particular physical depth.

Away from that, using Optix via ssh now also works for us.

Norman Geist.

> -----Ursprüngliche Nachricht-----
> Von: owner-vmd-l_at_ks.uiuc.edu [mailto:owner-vmd-l_at_ks.uiuc.edu] Im
> Auftrag von John Stone
> Gesendet: Donnerstag, 13. November 2014 07:22
> An: vmd-l_at_ks.uiuc.edu
> Betreff: vmd-l: Re: Need testers: VMD 1.9.2 w/ interactive GPU ray
> tracing w/ AO, depth of field, etc.
>
> Hi,
> I've posted another updated test version of VMD with the
> interactive GPU-accelerated ray tracer. The new version adds
> support for depth-of-field effects (see new items at the bottom of the
> "Display Settings" menu), and many other improvements:
> http://www.ks.uiuc.edu/Research/vmd/alpha/optix/
>
> I will be posting new example images with depth of field and
> other features tomorrow as I get a chance.
>
> Cheers,
> John Stone
> vmd_at_ks.uiuc.edu
>
>
> On Thu, Oct 30, 2014 at 11:33:12AM -0500, John Stone wrote:
> > Hi,
> > Since VMD 1.9.2 beta 1 was released, I have been working
> > hard on making the first version of a new interactive GPU ray
> > tracing feature available before VMD 1.9.2 ships. I have had
> > a small group of people testing the code up until now, but I
> > think it's time to get feedback from a broader range of users,
> > particularly since several hundred people have already been
> > downloading and testing the previous VMD beta version that
> > includes the batch-only version of the GPU ray tracer.
> >
> > The new VMD build _REQUIRES_ the latest NVIDIA driver versions.
> > You MUST be running NVIDIA driver version 344.xx or later otherwise
> > you will not be able to use new GPU ray tracer.
> > Best results will be obtained on GPUs that contain several gigabytes
> > of GPU memory. GPUs with 4GB of memory are in the sweet spot where
> > you can render even fairly large scenes without running out of
> memory.
> >
> > The reward for going through the trouble to update to the latest
> > driver version is that this new version of VMD can do real-time
> > interactive ray tracing for large molecular scenes, at rates of
> > 20 to 60 frames per second, even when sophisticated rendering
> > effects such as ambient occlusion light or depth of field are
> > enabled, by virtue of the use of a progressive rendering approach
> > that refines the image when the view orientation is not changing.
> >
> > The new interactive GPU ray tracer is currently listed in the VMD
> > File|Render menu as "TachyonL-OptiX (live real-time GPU display)".
> >
> > The interactive ray tracer will open a new graphics display window,
> > which uses similar control keys to the main VMD graphics display,
> > and it also supports the use of the SpaceNavigator input devices.
> >
> > I have posted a 64-bit Linux VMD test build for RHEL 5.x systems,
> > and I'm writing initial documentation for it here:
> > http://www.ks.uiuc.edu/Research/vmd/alpha/optix/
> >
> > The new VMD test version also supports depth-of-field rendering in
> > the standard CPU versions Tachyon, and POV-Ray.
> >
> > I would appreciate feedback users have when they begin testing
> > the new features. I will be updating the documentation as
> > questions, problems, and solutions arise.
> >
> > Cheers,
> > John Stone
> > vmd_at_ks.uiuc.edu
> >
> > --
> > 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/
>
> --
> 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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