From: John Stone (
Date: Thu Apr 15 2021 - 10:20:42 CDT

  When VMD starts up, it automatically detects NVIDIA GPUs
that support CUDA and OptiX (OptiX is the ray tracing development
framework I used to write the existing lightegith GPU version of Tachyon).
If you've got up-to-date NVIDIA drivers, you should see a VMD startup message
that looks similar to this:

Info) Detected 3 available TachyonL/OptiX ray tracing accelerators
Info) Compiling OptiX shaders on 3 target GPUs...

If no OptiX-capable GPUs are seen by VMD, then you won't see the
various "TachyonL-OptiX" renderers listed in in the File->Render menu.

Best regards,
  John Stone

On Thu, Apr 15, 2021 at 10:45:48AM +0200, Geist, Norman wrote:
> Use renderers with optix in their names.
> Am Donnerstag, den 15-04-2021 um 09:31 schrieb Nikhil Maroli:
> Dear All,
> I am having 3 x 1070 with a 2 x 12 core processor. I have installed VMD
> for CUDA versions. When I load VMD I can see it uses 700Mb from the
> card, however rendering always running on the processor.
> Can anyone tell me how I use cards for rendering purposes
> Nikhil
> --

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