have searched but have not found an answer to/for this.

would like a control interface on one machine that would start the recordings simultaneously on the others.

what i am doing:
multi track record (rather than mix down to stereo on one computer) on a cluster of amd64 machines (up to 5).
for example vocal, acoustic mike, electric guitar, electric bass
and mixed down drum kit recorded simultaneously on separate
computers handling each track separately.
allows a live performance to be mixed after that fact

i can do this manually but syncing after the fact is a little annoying.

the tracks would then be moved to one machine for post editing
and mixing with the sync being trivial