[Beowulf] any creative ways to crash Linux?: does a shared NIC IMPI always remain responsive?

Hearns, John john.hearns at mclaren.com
Mon Oct 26 13:03:27 EDT 2009


I don't think that a standard is actually needed... My naive
understanding is that the NIC firmware does packet inspection 

As I just said, I thought there was a bridge chip before the NIC,
and I agree there is packet filtering.
Look up my tortuous examination of what happens when you run a lot of
'rsh'sessions on a cluster,
and clash with the IPMI ports (ie your rsh session disappears down a big
hole).
And before anyone says it - more modern kernels raise the sun rpc min
reserved port to 
above the IPMI port(s)

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