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.


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)