On Ubuntu 16.04. I have 2 Nvidia GPU's. How can I choose which one is being used for OpenGL rendering? lspci detects both GPU's, and both show up in Nvidia settings. When I run something like Unigen-Heavan, GPU 0 is used. How can I make it use GPU 1? (Only have one monitor) Thanks
Still looking for a better answer to actually switch GPU 0 and GPU 1, but what ended up working was turning off GPU 0 (the internal) in BIOS, connecting the external GPU, and connecting the screen to the external GPU. This actually improves performance slightly, I need to change the cable connected to the monitor.
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