See Concurrent computing
https://pythonprogramming.net/build-supercomputer-raspberry-pi/
http://thenextweb.com/insider/2016/09/04/satisfying-pics-cable-management/#gref
https://www.buzzfeed.com/lukebailey/satisfying-cables?bffbuk&utm_term=.rdVlyDlqa#.auVkYVkLG
