2 Feb 2011 cultibot   » (Observer)

cascading distributed network

Another such idea (taken through initial development as a thought experiment), in this case one that you'd have to be a chip hacker or microcode programmer to actually implement, first saw the light of day years ago, on The WELL, and then more recently in a topic in the Robots Podcast Forum (since closed).

This one is about very efficient addressing and message passing through a processor network having arbitrary topology, using only the minimum necessary number of bits for each step in a path, and automatically generating a return address, which can also serve to identify the source of the message.

It's recently occurred to me that this idea might be particularly applicable to robotics, where machines might have a separate processor to control every major joint and sub-system, and need to pass messages directly between them without going through a central switch, to keep latency manageable.

Such a network could also accommodate situations where hardware needed to be hot-pluggable, added and removed as the situation required, since newly attached hardware would automatically acquire predictable addresses and, in the case of removal, remaining hardware would always have return addresses for use in sending "cannot deliver, that path is closed" messages.

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