SA260324R-0242_r1

SA260324R-0242

① SA Source

• Source: 開啟完整 SA 文章
• Section: Oberon and Kyber Updates, Larger World Sizes Introduced, More Networking Updates
• Line hint: 304

Context Before

Each 28.8T NVLink Switch has 144 lanes of 200G (simultaneous bi-directional) which means each Switch has 24 lanes of 200G going to each connector.

Evidence

Copper flyover cables are used to connect each switch to the midplane, as the distances involved are too long for PCB traces.

Context After

This is also why the switches are further away from the midplane, to provide space for the routing of the flyover cables.

② Atomic Claim

使用 Copper flyover cable 將每顆 switch 連到 midplane，因為距離太長，不適合使用 PCB trace。

• Epistemic Mode: ASSERTED
• Mapping Status: COMPLETE

③ Semantic Frame

{
  "frame_type": "NARY_RELATION",
  "participants": [
    {
      "node": {
        "id": "04_knowledge_base/Copper",
        "label": "Copper"
      },
      "role": "material"
    },
    {
      "node": {
        "id": "04_knowledge_base/Flyover cable",
        "label": "flyover cable"
      },
      "role": "cable"
    },
    {
      "node": {
        "id": "04_knowledge_base/Midplane",
        "label": "midplane"
      },
      "role": "destination"
    },
    {
      "node": {
        "id": "04_knowledge_base/PCB",
        "label": "PCB"
      },
      "role": "unsuitable_medium"
    }
  ],
  "qualifiers": {
    "condition_text": "距離過長，不適合 PCB traces",
    "numeric_mentions": [],
    "temporal_mentions": []
  },
  "relation_type": "SWITCH_TO_MIDPLANE_FLYOVER_CONNECTIVITY"
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
material	Copper	Copper
cable	flyover cable	04_knowledge_base/Flyover cable
destination	midplane	Midplane
unsuitable_medium	PCB	PCB

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。