Ah, I misunderstood your project page.

Lua doesn't use multiple OS threads.

I didn't know that. That's really disappointing. Parallelism really is important. It sounds like it's possible, just really awkward: http://kotisivu.dnainternet.net/askok/bin/lanes/

Kudos on making a nice CSP library for Lua though. In my opinion, CSP is a good paradigm for high-level concurrent and parallel processing. Hopefully one day Lua will add reasonable parallelism.