It uses ssh to spawn remote workers and TCP sockets for them to communicate with the farmer. It relies on arnesi's call/cc to build advanced flow control structures in the farmer (parallel, sequential, timeouts, map/reduce, etc.) and provides a distributed-map/centralized-reduce computation model.
Documentation and packaging are minimal at this point. You need to edit or add code to configure things, but the base software seems to work happily. Please contact the author if you are interested in using philip-jose.
Main author: Fare Rideau.
philip-jose source code is at: http://common-lisp.net/gitweb?p=users/frideau/philip-jose.git