In order to run the Jupyter notebook, a number of Python prerequisites must first be installed. The full list of modules required by the main code and the notebook is:
numpy, numexpr, numba, h5py, pyfftw, time, sys, os, matplotlib, math, multiprocessing.
Note: Errors may be encountered for older matplotlib versions. Please ensure you have the latest version: pip install --upgrade matplotlib
Instructions on basic setup and usage can be found here: http://cosmology.blogs.auckland.ac.nz/pyultralight/
The complete code release paper can be found here: https://arxiv.org/pdf/1807.04037.pdf