Infiniband hasn't increased in speed in a while, while Ethernet has. IB is all but done since Ethernet 200 and 400Gbps will be out soon, and in fact, are already supported by Mellanox switches.
From what I understand the reason it hasn't increased is because primarily of PCIe, it is set to double in speed with PCIe 4.0 and again with 5.0 once those are made more available with maximum speeds of 1.6 and 4.0 TB for IB x16.
IB still has lower latency than Ethernet at least on paper especially when it comes to RDMA but I don't know how much of an issue that is for these applications.
But overall I'm not sure how much it matters to Mellanox since they are also the ones who are making the high speed Ethernet switches and host adapters.
IB still has lower latency than Ethernet at least on paper especially when it comes to RDMA but I don't know how much of an issue that is for these applications.
But overall I'm not sure how much it matters to Mellanox since they are also the ones who are making the high speed Ethernet switches and host adapters.