[Beowulf] Xeon D systems? (and 10G in general)
fcannini at gmail.com
Thu Mar 12 06:49:48 PDT 2015
On 11-03-2015 06:52, John Hearns wrote:
> Very good article on The Platform:
> On 10 March 2015 at 19:42, Mark Hahn <hahn at mcmaster.ca
> <mailto:hahn at mcmaster.ca>> wrote:
> Intel recently introduced an interesting product:
> Xeon D is a Broadwell (Haswell shrink) SoC.
> It only has 8 cores, not high-clocked and only 2 dimm channels, so
> it's definitely not at the same level of fat-node goodness as an
> e5-26xx v3. But for 45W, you also get 2x onboard 10Gb!
> Anyone working on an HPC system based on these quite compact
> building blocks? the SoC also has stuff like PCIe and SATA,
> which is why a lot of the coverage is calling it a chip for desktop
> NAS, etc. But for HPC purposes, the CPU is quite decent, memory
> balance is reasonable, and it's hard
> to argue with two free 10G...
> On that topic, I've read some work recently on performance tuning of
> Intel 10G, but not in an HPC context. Is 10G still
> sucking for MPI latency? (SFP+ DA noticably better than 10GbT?)
> If you're thinking of saying "why bother with an x86_64 SoC
> when you can get a 64b Atom SoC", well, can you? (for cheap,
> at commodity volume, etc...) Do any of the surviving Atom SoCs
> still have onboard multiport switching fabrics?
I'm not sure of what to make of this new Xeon, especially because it
cuts right through the E3-1200 series, as you can see in the link that
John provided, but may I speculate a little with two possibilities:
- Intel is phasing out the E3-1200 series
( Unlikely, IMHO )
- Intel is beefing up its [def|off]ensive options against ARMv8,
especially after Cray and Lenovo announced tests with Cavium's Thunder-X
Any other bet ?
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