Lightmatter Passage : A 3D Photonic Interposer for AI 光子通道：AI 用 3D 光子互连板 Over the past decade, the scale of AI models and their computational demands have grown exponentially—from early models with only a few million parameters to today's models with hundreds of billions or even trillions. For instance, training large language models such as GPT-3 and GPT-4 typically requires thousands of GPUs in scale-out distributed systems to complete within a reasonable time. However, this expansion approach faces signi ...