North American Network Operators Group

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Re: What is the limit? (was RE: multi-homing fixes)

  • From: Gordon Cook
  • Date: Thu Aug 30 00:22:28 2001

I recall something about liquid (something, could be nitrogen, or perhaps
even mercury) that was chilled; PC Boards were then submersed in the
liquid to keep cool.

Maybe on Crays?

dunno about Crays..... but definitely on Control Datas ETA 10s designed to replace the CYBER 205

in 1988-1990 at the von Nueman supercomputer center in princeton we had 2 eta 10s.... each with large CPU boards that were immersed in tanks of liquid nitrogen. If we had a AC problem the operator were trained to do the quickest possible shut down on the machines..... even so with in five minutes the temp inside the machine room went up by 10 degrees

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