Hi Joey,
I’m running similar configuration, but with Ubuntu 16.04 and I had the same problem. I’m using cuda 8.0 instead of 9 (as suggested by the developer)
In the end, I fixed it by using another pyfftw package and it seems to run smoothly.
To do so replace the line :
conda install -q -y --force -c richli fftw=3.3.4 pyfftw=0.9.2
by the two lines :
conda install -q -y --force -c richli fftw=3.3.4
conda install -q -y --force -c conda-forge pyfftw
Note that it’s probably only a temporary fix and a proper installation should probably be done once the problem is fixed.
Hope this help.
Alain