Apple users trying to get their NVIDIA GPUs to work on macOS Mojave 10.14 might be out of luck as Apple has not approved any NVIDIA drivers for the OS yet, even months after release. The only NVIDIA GPUs supported are the Quadro K5000 and the GTX 680. This leaves out those wishing to use the improved CUDA acceleration and other proprietary NVIDIA development tools on macOS Mojave out of luck.
https://www.notebookcheck.net/No-respite-in-sight-for-creative-pros-trying-to-get-NVIDIA-GPUs-to-work-on-macOS-Mojave.381306.0.html