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From: Mark Hahn <hahn@physics.mcmaster.ca>
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> I could ask the SGI Eagan folks to do that with an Altix and a IA64
> Whitebox  - oh wait, both OSes would be Linux..

the only public info I've seen is "round-trip in as little as 40ns",
which is too vague to be useful.  and sounds WAY optimistic - perhaps
that's just between two CPUs in a single brick.  remember that 
LMBench shows memory latencies of O(100ns) for even fast uniprocessors.

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