MRC supercomputer networking, annonced by OpenAI and others

[NY_Sam2]

MRC (Multipath Reliable Connection), announced by OpenAI (and AMD, Broadcom, Intel, Microsoft, Nvidia, in alphabetical order)
. Google is missing! Nvidia's switches & CPO are critical?
. very large networks (like a hundred thousand GPUs) with only two tiers of switches
. source = blog 2026-May-05, link = https://openai.com/index/mrc-supercomputer-networking/

 

[KevinK]

Very interesting announcement.

Google might be missing because they are all in on optical switching (OCS) already with their Apollo/Palomar hardware and beyond:

Google OCS Apollo: The >$3 Billion Game-Changer in Datacenter Networking

Custom Optical Switches Reduce Broadcom's Networking Dominance

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