If anyone wants the actual code to do this then it's here:
https://github.com/NVlabs/stylegan
You need a GPU equipped server and you need to set up CUDA and TensorFlow correctly.
I am currently running a model on a small group of 64GB servers with 16 Tesla V100 GPUs.
(be aware these servers are NOT cheap, you won't be doing this shit with pocket change any time soon.)