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@SemiAnalysis_· @SemiAnalysis_ · X·· 2026-08-18AI 评分29
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在 3D torus 中,每个 TPU 与 6 个邻居通信(±X、±Y、±Z)。想象一个芯片组成的立方体:每块芯片与旁边的芯片相连,边缘上的芯片则环绕连接到对侧边缘。这种环绕正是它成为 torus 而非 mesh 的原因,也正是 OCS 层所提供的能力。(4/8)

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In a 3D torus, each TPU talks to 6 neighbors (±X, ±Y, ±Z). Picture a cube of chips: every chip links to the ones beside it, and chips on an edge wrap around to the opposite edge. That wraparound is what makes it a torus rather than a mesh, and it's what the OCS layer provides. (4/8)

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