VR2R-0545_r1

VR2R-0545

① SA Source

• Source: 開啟完整 SA 文章
• Section: Scale-Up Network - NVLink 6
• Line hint: 458

Context Before

Although the NVLink 6 Switch used in the VR NVL72 system delivers the same per switch 28.8T aggregate bandwidth as NVLink 5 Switch, the SerDes speed on the NVLink 6 Switch is double the SerDes speed of NVLink 5 Switch but with the same number of DPs.

Evidence

As such, in order to deliver double the aggregate scale-up bandwidth required for NVLink 6, Vera Rubin NVL72 racks will contain double the number of NVLink Switches as compared to GB200 racks.

Context After

This translates to four NVLink Switch chips per tray on 9 switch trays, or 36 NVLink Switch chips in each rack.

② Atomic Claim

為提供 NVLink 6 所需的 2 倍 aggregate scale-up bandwidth，Vera Rubin NVL72 rack 的 NVLink Switch 數量會是 GB200 rack 的 2 倍。

• Epistemic Mode: ASSERTED
• Mapping Status: COMPLETE

③ Semantic Frame

{
  "comparison_expression": "Vera Rubin NVL72 uses 2x the NVLink Switch count of GB200 racks to deliver 2x aggregate scale-up bandwidth.",
  "entities": [
    {
      "id": "04_knowledge_base/Vera Rubin",
      "label": "Vera Rubin"
    },
    {
      "id": "04_knowledge_base/NVLink",
      "label": "NVLink 6"
    },
    {
      "id": "04_knowledge_base/GB200",
      "label": "GB200"
    }
  ],
  "frame_type": "COMPARISON",
  "metric": "NVLINK_SWITCH_COUNT",
  "operator": "MULTIPLE_OF",
  "qualifiers": {
    "condition_text": null,
    "numeric_mentions": [
      "2x"
    ],
    "temporal_mentions": []
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
entity	Vera Rubin	04_knowledge_base/Vera Rubin
entity	NVLink 6	NVLink
entity	GB200	GB200

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。