[Beowulf] top500 clusters using
hahn at mcmaster.ca
Wed Feb 3 16:27:00 EST 2010
> Last top500 lists contain a set of sites which are not from HPC world.
sure - it always has. top500 is not particularly HPC-specific,
since linpack only weakly measures important factors like memory
and interconnect bandwidth and latency. the main appeal of linpack
is that it's pretty well-understood and uses hardware (FPUs) present
in all conventional machines...
> I understand that there may be parallelized applications which may use whole
> cluster for one task, but this task isn't floating-point oriented.
I would almost say that linpack is not particularly about FP
(since you can derive integer rates from the scores if you want.)
> etc. IMHO they may use clusters for Web-hosting etc, where may be load
> balancing is used. I.e. it's not "supercomputer" (I means computer, all
> CPUs/cores of which may be used for solving of one task).
I think it's more common than you think for clusters to be load-balanced
among many applications - or conversely that single-job clusters,
which might strictly be called "capability", are rare.
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