Re: [Beowulf] Hyperthreading and 'OS jitter'

2017-08-01 Thread Evan Burness
Samuel wrote: > On 26/07/17 00:31, Evan Burness wrote: > > > If I recall correctly, IBM did just what you're describing with the > > BlueGene CPUs. I believe those were 18-core parts, with 2 of the cores > > being reserved to run the OS and as a buffer against jitte

Re: [Beowulf] Hyperthreading and 'OS jitter'

2017-07-25 Thread Evan Burness
gt; John Hearns >> ... John Hearns >> >> ___ >> 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 >> >> > >

Re: [Beowulf] GPFS and failed metadata NSD

2017-04-29 Thread Evan Burness
ore you remember "oh yeah, IBM is a > _services_ company." > > jbh > > > On Sat, Apr 29, 2017 at 8:58 PM Evan Burness com> wrote: > >> Hi John, >> >> Yeah, I think the best word here is "ouch" unfortunately. I asked a few >> of my GPFS-s

Re: [Beowulf] GPFS and failed metadata NSD

2017-04-29 Thread Evan Burness
using these or similar instances. If you have a decent background with filesystems these cloud instances can be excellent performers, either for test/lab scenarios like this or production environments. Hope this helps! Best, Evan Burness - Evan Burness Director, HPC Cycle Com

Re: [Beowulf] GPFS and failed metadata NSD

2017-04-29 Thread Evan Burness
ng it? Best, Evan - Evan Burness Director, HPC Cycle Computing evan.burn...@cyclecomputing.com (919) 724-9338 On Sat, Apr 29, 2017 at 9:36 AM, Peter St. John wrote: > just a friendly reminder that while the probability of a particular > coincidence might be ve