The interconnect is just 10% of the whole cluster story. Firewire is one possibility, but Fibrechannel you could do today if you wanted to. We have Fibrechannel support in the Qlogic isp(4) driver (thanks Matt!) today.
Yeah... if you are lucky 10% :). In fact latency in messages isn't as important
as some people would like you to believe either. A well written MPI library
[and MPI application] allows overlap of communication and computation
that improves the overall wall clock time of the job... which is the ultimate goal.
Get it done correctly and get it done ASAP! :)
but that's WAAAAY offtopic now :)
Dave
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