cray instability

from The Free On-line Dictionary of Computing (8 July 2008)

Cray instability

   A shortcoming of a program or {algorithm} that manifests
   itself only when a large problem is being run on a powerful
   machine such as a {Cray}.  Generally more subtle than {bugs}
   that can be detected in smaller problems running on a
   {workstation} or {minicomputer}.

   [{Jargon File}]

   (1994-10-13)