Basically read this here: https://developer.valvesoftware.com/wiki/VMPI I thought it might be interesting to experiment with at some point. I also thought I may as well upload the files in a zip. EDIT: Basically what this does is makes worker/s machine/s compile the map for you. You can see the benefits here, you could for example work on your laptop and it would compile on a desktop for you without putting any load on the laptop. It may even be possible to do this over the net -> Distributed computing.