Deselect card for CUDA RT

[SreckoM]

Is there option to limit Vray to use only one card and other to be used for display only? And if so how?
Thanks!

[vlado]

Which OS?

There is an environment variable that you could use, but it's format is somewhat complicated. There is also a tool ocldeviceselect that you can use on Windows.

Best regards,
Vlado

[SreckoM]

It is OSX.

[savage309]

It is OSX.

Unfortunately we don't have very easy way to do it for Blender on OS X. As Vlado said, it happens via environment variable.
The syntax is pretty straight forward, though:
VRAY_OPENCL_PLATFORMS_x64=nvidia will make it choose only NVIDIA GPUs.
VRAY_OPENCL_PLATFORMS_x64=titan;690 will make it choose only Titan and 690 GPU.
VRAY_OPENCL_PLATFORMS_x64=index0;index2 will make it use the devices the first and third device (in order defined by the OS).

If you don't know how to setup the env var, or it doesn't work for you, just ask.

Best,
Blago.

p.s. ignore the "OPENCL" in the env var name - it works for CUDA as well.