Trying to install CUDA 91. on Ubuntu 18.04. NVidia only has it for 16 and 17.10. I've tried installing libcudart9.1, nvidia-cuda-dev, and nvidia-cuda-toolkit from the repo.
Since there's nothing in /usr/local (which is where it gets put when I do it in CentOS), and there's nothing in /opt, I'm assuming that the parts of CUDA I'm used to seeing have not been installed.
Anyone got a clue for what to install on 18.04?