VR2R-0598_r1

VR2R-0598

① SA Source

• Source: 開啟完整 SA 文章
• Section: Connecting GPUs in the Scale-Out InfiniBand Network
• Line hint: 502

Context Before

(2\left(\frac{\frac{115{,}200}{1{,}600}}{2}\right)^3 = 2\left(\frac{72}{2}\right)^3 = 93,312)

Evidence

By one 1.6T logical port, we mean that the two 800G OSFP cages connected to each GPU are connected to a single, dual-port 1.6T transceiver at the leaf layer because the two 800G ports are effectively performing the function of one 1.6T port—and hence the term “logical”.

Context After

To scale beyond the maximum cluster size of 93,312 GPUs, a 2-plane network can be deployed in which each of the two 800G OSFP cages supporting a GPU are linked to separate leaf switches on different network planes. This allows you to build a 186,624-GPU cluster size and even scale up to 746,496-GPU cluster sizes:

② Atomic Claim

所謂 1 個 1.6T logical port，是指每顆 GPU 連接的 2 個 800G OSFP cages，在 leaf layer 接到單一 dual-port 1.6T transceiver；因為兩個 800G ports 實際共同執行一個 1.6T port 的功能，所以稱為 logical。

• Epistemic Mode: ASSERTED
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "attribute": "ONE_1_6T_LOGICAL_PORT_DEFINITION",
  "context_nodes": [],
  "entity": {
    "id": "04_knowledge_base/GPU",
    "label": "GPU"
  },
  "frame_type": "ATTRIBUTE",
  "qualifiers": {
    "condition_text": "OSFP cage, leaf layer and transceiver are plain text",
    "numeric_mentions": [
      "1",
      "1.6T",
      "2",
      "800G"
    ],
    "temporal_mentions": []
  },
  "value": {
    "numeric_mentions": [
      "1",
      "1.6T",
      "2",
      "800G"
    ],
    "value_text": "two 800G OSFP cages per GPU connect to one dual-port 1.6T leaf-layer transceiver and function as one logical 1.6T port."
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
entity	GPU	GPU

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。