[Beowulf] IBM LCM16 capacity

[John Hearns]

John, thst is a good idea.
And can use onboard controllers for power up/down also.

500 nodes equals 500 extra bulky cables!

Ps. Anyone remember the Sun nodes where the BMC controllers had two
dedicated Ethernet ports plus onboard bridge - so you could daisy chain
them up a rack? Good idea.
But many hours spent diagnosing spanning tree issues. Deep joy.
Can I have those hours back please?
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