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Architects' Tech Alliance
Architects' Tech Alliance
Oct 28, 2025 · Artificial Intelligence

How Alibaba’s ALink System and UPN512 Architecture Redefine AI Scale‑Up Networking

The article explains Alibaba’s ALink System, detailing its data‑plane ALS‑D and control‑plane ALS‑M, the backplane‑free orthogonal hardware design, copper and optical interconnect layers, and the UPN512 architecture’s optical options, transmission semantics, and in‑network computing techniques that together reshape AI scale‑up networking.

AIAlinkInterconnect
0 likes · 23 min read
How Alibaba’s ALink System and UPN512 Architecture Redefine AI Scale‑Up Networking
Alibaba Cloud Infrastructure
Alibaba Cloud Infrastructure
Sep 26, 2025 · Artificial Intelligence

How Alibaba’s UPN512 Redefines AI Scale‑Up Networking with Optical Interconnects

The UPN512 whitepaper details Alibaba Cloud's next‑generation AI infrastructure network, explaining the shift from dense to MoE models, the rise of train‑and‑inference integration, xPU scale‑up challenges, and how high‑radix Ethernet with LPO/NPO optical interconnects delivers ultra‑high bandwidth, low latency, cost‑effective, and reliable large‑scale AI compute clusters.

AI infrastructureUPN512high performance computing
0 likes · 34 min read
How Alibaba’s UPN512 Redefines AI Scale‑Up Networking with Optical Interconnects