On 08/10/2017 07:39 AM, Faraz Hussain wrote: > One of our compute nodes runs ~30% slower than others. It has the exact same > image so I am baffled why it is running slow . I have tested OMP and MPI > benchmarks. Everything runs slower. The cpu usage goes to 2000%, so all looks > normal there.
We got some supermicro dual socket nodes without the little plastic air guides. They thermally throttled really quickly. I've also seen nodes that fall back to 1 channel because the dimms were in the wrong slots. I suggest comparing the physical nodes, double check fans (which should be spinning), air conduits, dimm placement, etc. Then check dmesg, syslog, temperatures, and compare a fast node to a slow node. _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
