From The Jargon File (version 4.4.7, 29 Dec 2003) :
clustergeeking
/kluh'st@r?gee`king/, n.
[CMU] Spending more time at a computer cluster doing CS homework than most
people spend breathing.
From The Free On-line Dictionary of Computing (30 December 2018) :
clustergeeking
/kluh'st*r-gee"king/ ({CMU ) Spending more time at a
computer cluster doing CS homework than most people spend
breathing.
[{Jargon File]
(1994-12-21)