VR2R-0589_r1

VR2R-0589

① SA Source

• Source: 開啟完整 SA 文章
• Section: Connecting GPUs in the Scale-Out InfiniBand Network
• Line hint: 488

Context Before

The Quantum X800-Q3400 is logically a multi-plane switch combining 4 Quantum-3 ASICs into a single switch box. This multi-plane “topology” is abstracted away and

Evidence

as far as network engineers are concerned, the Q3400 is a single switch with 144 ports—or a “little boy” switch.

Context After

The InfiniBand architecture for the HGX Rubin NVL8 server is therefore effectively a single-plane, 8-rail network consisting of one 800G uplink from each HGX Rubin NVL8 GPU to a leaf switch.

② Atomic Claim

……因此對 network engineers 而言，Q3400 就是一台具有 144 ports 的單一 switch，也被稱為「little boy」switch。

• Epistemic Mode: ASSERTED
• Mapping Status: COMPLETE

③ Semantic Frame

{
  "attribute": "LOGICAL_SWITCH_VIEW",
  "context_nodes": [],
  "entity": {
    "id": "04_knowledge_base/Quantum X800",
    "label": "Q3400"
  },
  "frame_type": "ATTRIBUTE",
  "qualifiers": {
    "condition_text": "continuation of VR2R-0588",
    "numeric_mentions": [
      "144"
    ],
    "temporal_mentions": []
  },
  "value": {
    "numeric_mentions": [
      "144"
    ],
    "value_text": "network engineers see Q3400 as a single 144-port switch, or little boy switch."
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
entity	Q3400	04_knowledge_base/Quantum X800

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。