SA260324R-0249_r1

SA260324R-0249

① SA Source

• Source: 開啟完整 SA 文章
• Section: Rubin Ultra NVL288
• Line hint: 312

Context Before

Though not officially discussed by Nvidia at GTC 2026, an NVL288 concept has been explored within the supply chain. This would entail two NVL144 Kyber racks placed adjacent to each other, with

Evidence

a rack-to-rack copper backplane used to connect the two racks.

Context After

One possibility is that all 288 GPUs are connected all to all, but this would require higher radix switches than the current NVLink 7 switches which only offer a maximum radix of 144 ports of 200G.

② Atomic Claim

會使用 rack-to-rack copper backplane 連接這兩個 rack。

• Epistemic Mode: ASSERTED
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "frame_type": "NARY_RELATION",
  "participants": [
    {
      "node": {
        "id": "04_knowledge_base/Copper",
        "label": "copper"
      },
      "role": "material"
    },
    {
      "node": {
        "id": "04_knowledge_base/Backplane",
        "label": "backplane"
      },
      "role": "backplane"
    }
  ],
  "qualifiers": {
    "condition_text": "two racks 指涉前一條的兩個 NVL144 Kyber racks",
    "numeric_mentions": [
      "2"
    ],
    "temporal_mentions": []
  },
  "relation_type": "CONNECTS_ADJACENT_RACKS"
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
material	copper	Copper
backplane	backplane	Backplane

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。