[learndeeply]

(not a hardware engineer) This looks like Google's version of Infiniband, which is basically mandatory for large scale ML-training servers due to issues with Ethernet, as described in the paper. Really cool stuff, wonder if we'll see traditional network hardware manufacturers copying this design.

[pclmulqdq]

If I recall correctly, this is a little more like Cray's Slingshot interconnect than Infiniband.

[wumpus]

InfiniPath / OmniPath dates back to 2004. Cornelis Networks sells the current generation.