UP2000 vs DS10 for beowulf?
bremner at unb.ca
Sat Oct 28 11:32:05 EDT 2000
I am looking at two different configurations of 600Mhz, 2M cache alpha
6*2 processor UP2000, 512M RAM
12*1 processor DS10L 256M RAM
both options include high speed networking (myrinet in one case,
wulfkit in the other; but possibly I could swap). Both will run Linux.
The pricing works out approximately the same. Is there anything
obvious that favours one of these configurations over the other?
If the answer is "it depends", what does it depend on?
One thing that is a bit worrying is having two processors talking
through one PCI bus to the high speed network.
The other is that I understand the UP2000 memory subsystem is not as
good as the ds20, and apparently can't provide the same bandwidth to
two processors. (see
e.g. http://www.dl.ac.uk/CFS/benchmarks/compchem.html, for anectdote,
but no numbers.) Does anyone have two processor stream numbers for
Clues for the clueless?
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