I've got a new problem with my cluster. Some of this problem may be with my queuing system (SGE), but I figured I'd post here first.
I've been using hpl to test my new cluster. I generally run a small problem size (Ns=60000)so the job only runs 15-20 minutes. Last night, I upped the problem size by a factor of 10 to Ns=600000). Shortly after submitting the job, have the nodes were shown as down in Ganglia. I killed the job with qdel, and the majority of the nodes came back, but about 1/3 did not. When I came in this morning, there were kernel panic/OOM type messages on the consoles of the systems that never came back. I used to run hpl jobs much bigger than this on my cluster w/o a problem. There's nothing I actively changes, but there might have been some updates to the OS (kernel, libs, etc) since the last time I ran a job this big. Any ideas where I should begin looking? -- Prentice _______________________________________________ Beowulf mailing list, [email protected] To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
