Ask HN: What do you think of xsight labs?
A Hacker News user asks for insights on xsight labs, a startup making networking gear for AI and SpaceX. Questions cover the real-world value of full switch programmability, on-path DPU cores vs competitors, merchant silicon swap under SONiC, market for a 12.8T leaf switch, and open-sourcing the ISA.
Background
- Xsight Labs is a startup building networking silicon and switches for AI data centers and SpaceX-type satellite constellations. Their pitch: full data-plane programmability, "on-path cores" in their DPU (unlike NVIDIA's off-path approach), and an open Instruction Set Architecture.
- The industry is dominated by Broadcom's fixed-function merchant silicon (Tomahawk/Jericho lines). SONiC is Microsoft's open-source switch OS meant to reduce vendor lock-in, but Broadcom's underlying SDK remains hard to escape.
- Pensando (AMD) and NVIDIA (BlueField) represent competing DPU architectures. "On-path" vs "off-path" means whether the processor sits directly in the packet flow or handles it as a separate, sidecar coprocessor.
- The 12.8T vs 51.2T question: Broadcom's Tomahawk 5 already does 51.2 Tbps. Xsight is entering at a lower tier, raising doubts about timing when hyperscalers are moving to faster spine switches.
- The OP is probing whether Xsight's technical differentiators are real advantages in production or just marketing claims that don't survive contact with real deployments.