Nothing in particular - this is an announcement of two server nodes revised to support the latest (but still Pascal) GPUs (8 or 10 if lower power is ok). You can pile them up and connect them with Infiniband or OmniPath if you want to build a cluster, the same as with other comparable servers.
I dunno, I never got past the option for three TBs of ram. At that point jealousy overtook me and I had to click away.
Exactly, it's pretty much identical to Nvidia's own DGX-1 (actually, the DGX-1 will be faster, because it's now using the Volta GPUs, a generation ahead of Pascal):
2 x E5-2698 v3, 512GB memory, 4 x 2TB SSD, 100GB Infiniband, and 8 x P100 (or Volta).
Yeah, I'm not sure why I would compete with Nvidia on their own turf unless I could do something bigger/better, but Nvidia will always have the advantage of information.
A big reason to buy a Cray is the experience they have. There's not a ton of people who've run large systems as long as they have. The technology may originate from Nvidia but Nvidia doesn't have a 40+ years experience building and supporting massive machines.
Very much this. And, that they have very high-end technicians that are cleared for top secret/classified data centers.