SA260324R-0194_r1

SA260324R-0194

① SA Source

• Source: 開啟完整 SA 文章
• Section: Nvidia's CPO Roadmap
• Line hint: 235

Context Before

In the Rubin Generation, Nvidia will offer the Rubin GPU in an Oberon NVL72 form factor with an all-copper scale-up network. For Rubin Ultra, as we expected, there will only be a copper scale-up option for Rubin Ultra in the Oberon and Kyber Rack form factor. Rubin Ultra will also be offered in a larger world size system that connects 8 Oberon Racks of 72 Rubin Ultra GPUs to form what will be referred to as NVL576.

Evidence

CPO scale-up will be used to build the larger world size, connecting between the racks in a two-tier all to all network, though scale-up inside the racks will remain copper-based.

Context After

When we reach the Feynman Generation, CPO usage will expand via another large world size rack, the NVL1152 which is formed by combining 8 Kyber racks.

② Atomic Claim

較大的 world-size 系統會用 CPO scale-up 做 rack 間連接，採 two-tier all-to-all network；rack 內的 scale-up 則仍維持 copper。

• Epistemic Mode: ASSERTED
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "comparison_expression": "rack 間使用 CPO 的 two-tier all-to-all scale-up；rack 內仍使用 copper scale-up。",
  "entities": [
    {
      "id": "04_knowledge_base/CPO",
      "label": "CPO"
    },
    {
      "id": "04_knowledge_base/Copper",
      "label": "copper"
    }
  ],
  "frame_type": "COMPARISON",
  "metric": "SCALE_UP_PLACEMENT",
  "operator": "DIFFERENT_BY_SCOPE",
  "qualifiers": {
    "condition_text": "larger world-size system 在此 atomic claim 沒有 canonical entity",
    "numeric_mentions": [
      "two-tier"
    ],
    "temporal_mentions": []
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
entity	CPO	CPO
entity	copper	Copper

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。