Archive for January 2008

Infiniband Ping Pong.

Intuitive to some, not to others. If you want to ping across an Infiniband network, like we use ping to test other networks, you could use ibping. Pick a system to be the destination of the ping and then go find out it’s Port GUID and start a ibping server on it: Set one system […]

Use pam_access.so to limit system access to members of a certain group or netgroup.

I’m building a cluster of 25 machines at work. Trying to get the Infiniband stuff to work on them – a dev found an annomoly in his benchmarking numbers and asked me to verify his work and look for trouble and so – I did. While I was doing it, I found some other users […]

Whoa – weird load ave and cpu freq reports from openSUSE 10.3

Just built a cluster of 25 Dell systems for our developers. These are Dell 1435SC systems, each with a pair of Dell 1435SC and 8 GB RAM. We installed openSUSE 10.3 on them all, added the Ganglia gmond and also the OpenIB infiniband successor OFED. Handed them off to our developers to certify and they […]

Spock?

If you haven’t see Spock.com yet, go have a look. Pretty interesting.