As John says, I'd start by checking the health of things like memory, power supplies etc.
I've seen things like this which go away after a firmware update, so I'd suggest updating the bios etc if you can. Have you tried completely removing the power for a few minutes then booting up again? Any idea when the problem started? I presume from the cpu it's not a new system. What physical form is it (1u server / blade etc)? Rob On Thu, 2017-08-10 at 08:39 -0600, 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. > > I thought it may have to do with cpu scaling, i.e when the kernel > changes the cpu speed depending on the workload. But we do not have > that enabled on these machines. > > Here is a snippet from "cat /proc/cpuinfo". Everything is identical > to > our other nodes. Any suggestions on what else to check? I have > tried > rebooting it. > > processor : 19 > vendor_id : GenuineIntel > cpu family : 6 > model : 62 > model name : Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz > stepping : 4 > cpu MHz : 2500.098 > cache size : 25600 KB > physical id : 1 > siblings : 10 > core id : 12 > cpu cores : 10 > apicid : 56 > initial apicid : 56 > fpu : yes > fpu_exception : yes > cpuid level : 13 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr > pge > mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe > syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts > rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 > monitor > ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 > x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm > ida > arat xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid > fsgsbase smep erms > bogomips : 5004.97 > clflush size : 64 > cache_alignment : 64 > address sizes : 46 bits physical, 48 bits virtual > power management: > > > > _______________________________________________ > 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 _______________________________________________ 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