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Learn about optical connectivity solutions for scaling AI networks in large clusters through this 22-minute conference talk. Explore how reliable optical connectivity becomes increasingly critical as AI cluster sizes expand with higher escape bandwidth requirements. Discover the current landscape where pluggable optics serve scale-out and front-end networks, while examining how co-package optics (CPO) technology provides higher density and low power optical connectivity with demonstrated good link stability performance data. Understand the transition pathway for deploying CPO technology in scale-up networks, where copper currently dominates AI scale-up network connectivity despite optical interconnects offering simplification and reach advantages. Analyze the power and cost competitiveness challenges that optical solutions face compared to copper alternatives. Compare two promising optical technologies for scale-up links: VCSEL-based near packaged optics (NPO) which delivers superior energy efficiency and cost benefits, and silicon photonics CPO which provides high escape bandwidth density, extended reach, and reliable link stability. Gain insights into the expected increased deployment of both NPO and CPO technologies in future scale-up network implementations.
