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Ultra Ethernet Specification v1.0 [pdf]

by mfiguiere on 6/11/25, 4:21 PM with 33 comments

• by altairprime on 6/11/25, 6:22 PM

  Their press release regarding today’s announcement of the finalized 1.0 specification is at:

  https://ultraethernet.org/ultra-ethernet-consortium-uec-laun...

  Their noteworthy features list is:

  > Modern RDMA for Ethernet and IP – Supporting intelligent, low-latency transport for high-throughput environments.

  > Open Standards and Interoperability – Avoids vendor lock-in while accelerating ecosystem-wide innovation.

  > End-to-End Scalability – From routing and provisioning to operations and testing, UEC scales to millions of endpoints.

• by frantathefranta on 6/11/25, 4:58 PM

  Skimming this, it looks like it's trying compete with Infiniband, but combining it with plain Ethernet?

• by anonymousDan on 6/11/25, 8:45 PM

  So how long before hardware is available that supports this spec? Would the kit likely be cheaper than infiniband (or even ROCE) equivalents?

• by throw0101d on 6/11/25, 5:27 PM

  While currently it seems like the only (?) InfiniBand vendor is Nvida/Mellanox, there used to be more folks selling the gear. For example Intel used to sell switches (had some for an Isilon backend):

  * https://www.intel.com/content/dam/support/us/en/documents/ne... (PDF)

  Officially there are a bunch of folks in the IB alliance:

  * https://www.infinibandta.org/member-listing/

• by lousken on 6/11/25, 6:58 PM

  This is cool, but I am more curious about what happens to all the cat 6a cabling in offices, where do we go after 10GBASE-T

• by datadrivenangel on 6/11/25, 4:59 PM

  Ethernet but for AI!