On 11-03-2015 06:52, John Hearns wrote:
Very good article on The Platform:
http://www.theplatform.net/2015/03/09/intel-crafts-broadwell-xeon-d-for-hyperscale/
On 10 March 2015 at 19:42, Mark Hahn <[email protected]
<mailto:[email protected]>> 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
chip
http://www.eweek.com/servers/cray-to-evaluate-arm-chips-in-its-supercomputers.html
http://www.theplatform.net/2015/02/27/prototype-arm-clusters-muscle-hpc/
Any other bet ?
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