Raspberry PI 2

Sure, sure, let me know when you're willing to wait 4 days for what takes an hour on your desktop. :-) I've done GA on my quad core Core i7 (6-8 threads running safely) and let it run for days. I cringe at the thought of a cluster of P2-300s doing the same amount of work... weeks? years?

CPU power aside, I'd be curious to hear about your GA setup. I've looked into, but never done real battles with Robocode. I've only evolved guns with WaveSim. To evolve movement, I imagine you have a test bot loading the variable code from a .properties file, unless your GA code is compiling and outputting JARs, which is the ideal but a pain.

FWIW, GA with full bots is not hard with BerryBots - I've even written an example to solve a maze: http://berrybots.com/wiki/MazerEvolver .... But, alas, the automation API doesn't support the Raspberry Pi (yet?). The big hurdle is that the automation API supports user interaction - you specify what fields you want and it prompts the user with a GUI. I'd like to do an ncurses version for the Rpi at some point, but who knows if I'll get around to it - I'm more interested in the web UI at this point.