From: John Stone (
Date: Fri Nov 04 2022 - 14:21:40 CDT

I haven't tested OSPRay on Windows 11. OSPRay is developed by Intel, so
Windows 11 compatibility is "out of my hands", but I expect that the
latest revs of OSPRay (2.x) will likely work. There is probably also a
way to make OSPRay 1.x work on Windows 11, but I honestly haven't had an
opportunity to try Windows 11 yet myself. Given that people have recently
reported trouble there though, I will plan to do that when I get out from
under the crunch before Supercomputing 2022...


On Thu, Nov 03, 2022 at 08:51:17PM -0700, Chris Taylor wrote:
> John, is there a plan to support OSPRay ray tracing on Windows 11? Thanks,
> Chris
> > On 11/03/2022 11:44 AM PDT John Stone <> wrote:
> >
> >
> > Hi,
> > If you set a Windows global environment variable VMDNOOSPRAY to 1,
> > that will prevent VMD from trying to intialize the Intel OSPRay ray tracing
> > library, and avoid the problem you're seeing.
> >

Research Affiliate, NIH Center for Macromolecular Modeling and Bioinformatics
Beckman Institute for Advanced Science and Technology
University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801