Infiniband is not an industry standard lol.
Maybe it used to be, but it definitely is not anymore. Most Infiniband vendors are dead. The only product from those days that endures is Cornelis' Omnipath, and even that only emulated the Infiniband API back with its first gen, and then evolved to be its own thing.
At this point, Infiniband is as good as a proprietary interconnect only sold by Nvidia/Mellanox.
https://www.infinibandta.org/member-listing/
As far as I know, everyone is free to sign up with the infiniband trade association and implement the specification.
Furthermore, if you use RDMA over Ethernet, you are using infiniband at a low level. RoCE which enables it was originally called Ethernet over infiniband. It is maintained by the infiniband trade association.
Omnipath was Intel’s failed effort to try to kill an open standard. It purchased QLogic’s infiniband business, killed it in favor of omnipath and sold it when it failed.
This is wrong.
RDMA over Ethernet is... RDMA over Ethernet. There is no Infiniband involved.
RoCE was motivated by supporting RDMA, which was then an IB-only feature, over regular Ethernet. The user-level APIs are the same (verbs), but the underlying architecture is all different --- it is traditional Ethernet with link-level flow control to make it lossless (pause frames).
(I did that yesterday and was very satisfied :) )
I am not interested in continuing this discussion, but if you want to do your own research, I suggest starting with the fact that the Infiniband Trade Association controls the RoCE specification. I suggest you avoid using LLMs, for obvious reasons.