[Beowulf] Performance characterising a HPC application

Mark Hahn hahn at mcmaster.ca
Fri Mar 23 19:57:54 EDT 2007


> All the real applications performance that I saw show that IB 10
> and 20Gb/s provide much higher performance results comparing to
> your 2G, and clearly better price/performance. This is a good

_all_?  that's patently absurd.  I don't think there's anything wrong
with presenting one's own products in a good light, but please don't
be misleading.  obviously, there are many applications which have 
absolutely no use for bandwidth greater than even plain old gigabit.
equally obvious, there are others which are sensitive to small-packet 
latency, which is not affected by DDR or dual-rail.
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