This is the solution: https://github.com/mapillary/inplace_abn/issues/106#issuecomment-475460496
I noticed that when I ran nvcc --version it was reporting 9.1 … but when I ran !python -m fastai.utils.show_install I was seeing the following:
python : 3.7.4
fastai : 1.0.58
fastprogress : 0.1.21
torch : 1.3.0
nvidia driver : 430.26
torch cuda : 10.1.243 / is available
torch cudnn : 7603 / is enabled
So I was like, “Why the hell is nvcc reporting 9.1?”
Did some googling and came across this github resolution which basically requires folks on 18.04 to be real explicit where everything is.
Maybe there is another way … but this is working