large clusters and topologies
sp at scali.no
Sat Jul 29 04:23:50 PDT 2000
Steffen Persvold wrote:
> An Excel worksheet (72kb) with all formulas and nice graphs showing the
> crossing points for different topologies, is also available on request.
> (I'd like to see this on other interconnects as well, so that we can
> _really_ compare them)
The charts (in png format) are at :
This chart shows the max bandwidth of the SCI links as a funtion of
number of nodes and topology.
This chart shows the max bandwitdh of the B-Link as a funtion of number
of nodes and topology.
This chart shows the max bandwidth per node as a funtion of number of
nodes and topology. (here hot-link and hot-blink is compared and the max
bandwidth of the interconnect is the lowest number)
This chart shows the aggregated (max bandwidth * number of nodes)
bandwidth of a system as a funtion of number of nodes and topology.
As you can see a SCI 3D-torus scales up to roughly 1700 nodes, giving
you a total aggregated bandwidth of 78 GBytes/s
And as a final note I think we all can agree on:
Overall systemscalability is also application dependent.
Steffen Persvold Systems Engineer
Email : mailto:sp at scali.no Scali AS (http://www.scali.com)
Tlf : (+47) 22 62 89 50 Olaf Helsets vei 6
Fax : (+47) 22 62 89 51 N-0621 Oslo, Norway
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