The one thing I found interesting about it is that all of the code and input files are available to download, if you want to replicate the data. Not for the faint of heart, and only for Linux, as far as I can tell.
They're not afraid of somebody checking their work. Didn't notice that it's Linux only … fodder for my ubuntu machine, if I go that route.
BTW, ".ch" domain is Switzerland, not China. If you didn't know that.
Source code or executable?
If source code just re-write in the code of your choice.
Slow but educational & more fun!