Scyld on a network

Greg Lindahl lindahl at
Thu May 23 19:13:44 PDT 2002

On Thu, May 23, 2002 at 01:04:57PM -0400, Krewson, Tom wrote:

> Could anyone tell me what the affect of having a cluster that is not
> isolated in its network but is a part of the entire network for an
> organization? I have a Scyld Beowulf (at times) in our art lab that could be
> isolated but is not.


Scyld Beowulf in particular works well on an isolated network, but it
gets a bit more exciting on a non-isolated network. You might have
someone else on your non-isolated network running rarpd, and then your
Scyld nodes won't be able to boot.

> Would there be excess traffic on the LAN
> when the cluster  was running?

Depends on your application, but if you don't have a switched network,
the answer is probably plain "yes".

The easiest way to get a Weekend Beowulf is to use a lab that is
internally switched and is isolated from the rest of the network, so
you know there aren't any rarpd's floating around. Sounds like that's
what you have in your art lab.


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