If you only have those two processor models to choose from I’d do the 5217 for MDS and 5218 for OSS. If you were using ZFS for a backend definitely the 5218 for the OSS. With ZFS your processors are also your RAID controller so you have the disk i/o, parity calculation, checksums and ZFS threads on top of the Lustre i/o and OS processes.
—Jeff On Thu, Jul 4, 2019 at 13:30 Simon Legrand <simon.legr...@inria.fr> wrote: > Hello Jeff, > > Thanks for your quick answer. We plan to use ldiskfs, but I would be > interested to know what could fit for zfs. > > Simon > > ------------------------------ > > *De: *"Jeff Johnson" <jeff.john...@aeoncomputing.com> > *À: *"Simon Legrand" <simon.legr...@inria.fr> > *Cc: *"lustre-discuss" <lustre-discuss@lists.lustre.org> > *Envoyé: *Jeudi 4 Juillet 2019 20:40:40 > *Objet: *Re: [lustre-discuss] Frequency vs Cores for OSS/MDS processors > > Simon, > > Which backend do you plan on using? ldiskfs or zfs? > > —Jeff > > On Thu, Jul 4, 2019 at 10:41 Simon Legrand <simon.legr...@inria.fr> wrote: > >> Dear all, >> >> We are currently configuring a Lustre filesystem and facing a dilemma. We >> have the choice between two types of processors for an OSS and a MDS. >> - Intel Xeon Gold 5217 3GHz, 11M Cache,10.40GT/s, 2UPI, Turbo, HT,8C/16T >> (115W) - DDR4-2666 >> - Intel Xeon Gold 5218 2.3GHz, 22M Cache,10.40GT/s, 2UPI, Turbo, >> HT,16C/32T (105W) - DDR4-2666 >> >> Basically, we have to choose between freequency and number of cores. >> Our current architecture is the following: >> - 1MDS with 11To SDD >> - 3 OSS/OST (~ 3*80To) >> Our final target is 6 OSS/OST with a single MDS. >> Do anyone of you could help us to choose and explain us the reasons? >> >> Best regards, >> >> Simon >> _______________________________________________ >> lustre-discuss mailing list >> lustre-discuss@lists.lustre.org >> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org >> > -- > ------------------------------ > Jeff Johnson > Co-Founder > Aeon Computing > > jeff.john...@aeoncomputing.com > www.aeoncomputing.com > t: 858-412-3810 x1001 f: 858-412-3845 > m: 619-204-9061 > > 4170 Morena Boulevard, Suite C - San Diego, CA 92117 > <https://www.google.com/maps/search/4170+Morena+Boulevard,+Suite+C+-+San+Diego,+CA+92117?entry=gmail&source=g> > High-Performance Computing / Lustre Filesystems / Scale-out Storage > > -- ------------------------------ Jeff Johnson Co-Founder Aeon Computing jeff.john...@aeoncomputing.com www.aeoncomputing.com t: 858-412-3810 x1001 f: 858-412-3845 m: 619-204-9061 4170 Morena Boulevard, Suite C - San Diego, CA 92117 High-Performance Computing / Lustre Filesystems / Scale-out Storage
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