SA260324R-0197_r1

SA260324R-0197

① SA Source

• Source: 開啟完整 SA 文章
• Section: Nvidia's CPO Roadmap
• Line hint: 239

Context Before

While the Nvidia Technical Blog that outlines the rack configuration roadmap states that “NVIDIA Kyber will scale up into a massive all-to-all NVL1152 supercomputer using similar direct optical interconnects for rack-to-rack scale-up”, Jensen Huang in a Financial Analyst Q+A session did say that NVL1152 in Feynman would be “all CPO”.

Evidence

There is some disagreement on whether copper will still be used for scale-up within the rack or whether CPO will replace copper.

Context After

Nvidia’s approach has been to use copper where they can, and optics where they must. The architecture of NVL1152 in the Feynman generation will follow the same principle. It is clear that the NVL1152 will adopt CPO to connect between racks, but from GPUs to NVLink Switches is currently copper POR. Nvidia is unable to achieve another doubling of electrical lane speed from 224Gbit/s bi-di to 448Gbit/s uni-di means bandwidth isn’t that amazing.

② Atomic Claim

目前對 rack 內 scale-up 到底會繼續使用 copper，還是由 CPO 取代 copper，存在不同說法。

• Epistemic Mode: ASSERTED
• Mapping Status: COMPLETE

③ Semantic Frame

{
  "comparison_expression": "rack 內 scale-up 是否繼續使用 copper，或改由 CPO 取代 copper，目前存在不同說法。",
  "entities": [
    {
      "id": "04_knowledge_base/Copper",
      "label": "copper"
    },
    {
      "id": "04_knowledge_base/CPO",
      "label": "CPO"
    }
  ],
  "frame_type": "COMPARISON",
  "metric": "INTRA_RACK_SCALE_UP_TECHNOLOGY",
  "operator": "UNCERTAIN_ALTERNATIVE",
  "qualifiers": {
    "condition_text": null,
    "numeric_mentions": [],
    "temporal_mentions": [
      "目前"
    ]
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
entity	copper	Copper
entity	CPO	CPO

⑤ Human Review

請在 Properties 逐項確認：

• 原文 → Atomic Claim 是否忠實
• Atomic Claim → Semantic Frame 是否忠實
• Canonical Entity mapping 是否正確
• Epistemic mode 是否保留原文語氣
• 最後選擇 review_action

Review state

Markdown 內文不是正式 approval。只有 Apply bridge 寫入的 Decision Ledger event 才是正式決策。