Next-gen AI networks may hinge on the telephone switchboard's return
- ID
- 20662
- Status
- summarized
- Published
- 02 Sep 2026, 9:00 PM
- Fetched
- 02 Sep 2026, 9:14 PM
- Provider
- The Register
- Category
- technology
- Original URL
- https://www.theregister.com/networks/2026/09/02/next-gen-ai-networks-may-hinge-on-the-telephone-switchboards-return/5293764
- Source URL
- https://www.theregister.com/headlines.atom
Summary
- Score
- 4.0
- Created
- 02 Sep 2026, 9:15 PM
- Tags
- Audience
- developersai-ml-learners
What happened
Nvidia is pouring billions into optical circuit switching (OCS) to enable next-gen AI clusters packing hundreds to thousands of GPUs per rack, investing $6B across Coherent, Lumentum, and Marvell, plus $125M into iPronics' second-gen OCS tech. Google has already used OCS in its TPU clusters for years, using microscopic mirrors and piezoelectric actuators to reconfigure mesh topologies on the fly.
Why it matters
If you're building on cloud GPU infrastructure, the cost and topology of AI clusters will shift as OCS-enabled mega-racks arrive, but there's nothing to change in your stack today. This is mostly relevant if you're evaluating datacenter hardware, colocation, or GPU procurement strategies where optical switching could alter pricing and availability of dense AI compute over the next few years.
Discussion angle
Google's TPU clusters have quietly used OCS for years while the rest of the industry relied on packet switching—what does that tell us about the gap between hyperscaler infrastructure and what everyone else can access?