Hi guys, is it possible to have in computer for Houdini for example one GPU Nvidia Quadro just for monitor and viewport and second GPU AMD for hidden openCL help with simulations? I saw some discussion about GPUs, but didn't find an answer to my question.
I tried that alreday, but there is no ability to select on which GPU I want to use openCL for simulations. It always pick my old Quadro and ignoring the AMD card. There is only enable or disable checkbock. So is it possible?
Thank you very much…

Yes, set HOUDINI_OCL_DEVICENUMBER to 1 in your environment variables (or in $HOME/houdini15.0/houdini.env). 0 is the primary graphics card, 1 is the second, etc.

You can then verify that it's using the AMD card by Help > About Houdini, Show Details. Scroll down to the OpenCL section, it should show your AMD card. You can also run the new (in H15) commandline app “hgpuinfo -c” to see your OpenCL info.

Hi Twod, thanks for an answer. But on my MAC OS X I can't find this path. I can find $HFS/houdini which is in fact MySystemDisk/Users/Teri/Library/Preferences/houdini/15.0
Is that the correct path?

Yes, that's the path on Mac. I don't use a Mac very often, so I can never recall where the prefs dir is

Yes, that worked great. Thank you again twod.