SA260324R-0258_r1

SA260324R-0258

① SA Source

• Source: 開啟完整 SA 文章
• Section: Rubin Ultra NVL288
• Line hint: 322

Context Before

The radix of the 28.8T NVLink Switch limits the number of GPUs that each switch can connect while still providing for cross-rack connectivity. Either a higher radix switch will have to be used - or there will have to be a degree of oversubscription in this architecture while potentially adopting a dragonfly-like network topology. This would also require fewer DPs worth of copper cables.

Evidence

All current evidence in the supply chain points to NVSwitch 7 being the same bandwidth as NVSwitch 6

Context After

, but that seems a bit illogical to be frank. Our belief is that NVSwitch 7 is actually 2x the bandwidth and radix of NVSwitch 6, so all-to-all can be done, and architecturally that makes the most sense from a systems perspective.

② Atomic Claim

目前所有供應鏈證據都指向 NVSwitch 7 的頻寬與 NVSwitch 6 相同。

• Epistemic Mode: ASSERTED
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "comparison_expression": "目前所有供應鏈證據都指向 NVSwitch 7 的頻寬與 NVSwitch 6 相同。",
  "entities": [
    {
      "id": "04_knowledge_base/NVSwitch",
      "label": "NVSwitch"
    }
  ],
  "frame_type": "COMPARISON",
  "metric": "BANDWIDTH",
  "operator": "EQUAL_TO",
  "qualifiers": {
    "condition_text": null,
    "numeric_mentions": [
      "7",
      "6"
    ],
    "temporal_mentions": []
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
entity	NVSwitch	NVSwitch

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。