[Beowulf] Xeon D systems? (and 10G in general)

[Michael Di Domenico]

Seems like an interesting chip.  256GF in 45 watts seems nice, but i'm
a little leery on the 10G onboard.  I'm not sure 10G is cost effective
on the large scale yet.  Is it even port-for-port to infiniband yet?
I've not looked in a while.

On Wed, Mar 11, 2015 at 5:52 AM, John Hearns <hearnsj at googlemail.com> 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 <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?
>>
>> thanks, Mark Hahn.
>> _______________________________________________
>> Beowulf mailing list, Beowulf at 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 at beowulf.org sponsored by Penguin Computing
> To change your subscription (digest mode or unsubscribe) visit
> http://www.beowulf.org/mailman/listinfo/beowulf
>