[Beowulf] 10GbE topologies for small-ish clusters?

Joe Landman landman at scalableinformatics.com
Wed Oct 12 10:58:58 EDT 2011


On 10/12/2011 10:52 AM, Chris Dagdigian wrote:
>
> First time I'm seriously pondering bringing 10GbE straight to compute
> nodes ...
>
> For 64 servers (32 to a cabinet) and an HPC system that spans two racks
> what would be the common 10 Gig networking topology be today?
>
> - One large core switch?
> - 48 port top-of-rack switches with trunking?
> - Something else?

What's the use case?  Low latency, or simplified high bandwidth connection?

10GbE with 40GbE uplinks won't be cheap.  But it would be doable. 
Gnodal, Mellanox, and others would be able to do this.

>
> Regards,
> Chris
>
>
>
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