[rescue] New Origin 3400 in Ottawa

[Dave McGuire]

On 1/28/20 12:13 AM, r.stricklin wrote:
>> Even if you take a dual sixteen-core machine, and put 40Gbps Infiniband on
> it between it and another one, you just have ... 2 systems.  You can't get
> single-system image out of Solaris nor Linux with such a setup.
> 
> Sure, but a lot of these new systems are actually NUMA architectures under the
> covers (I'm not totally up to date on all the various vendor's models, but
> certainly there's been a nonzero number of the multi-socket x86_64 proliants
> we've ordered in the last half decade that have been NUMA - not sure about
> cache-coherent vs. not though... I think, not).
> 
> You can't link multiple chassis like you can the Origin, but I think the above
> fact is the basis of the OP's question.
  I don't know of any ccNUMA systems in the current crop of big PCs.
Cache coherency is a tough nut to crack.

             -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA