VR2R-0650_r1

VR2R-0650

① SA Source

• Source: 開啟完整 SA 文章
• Section: Ethernet-Based Cluster Deployments
• Line hint: 558

Context Before

For the SN6800 CPO switch, even though the bandwidth engine responsible for converting electrical to optical signals scales from 1.6T to 3.2T or 2x compared to the SN6600 switch, each 3.2T OE within the SN6800 switch box is split into four 800G logical ports that fan out within the box itself and exit the front panel through fiber connectors.

Evidence

This allows a single 1.6T GPU to fan out to two independent switch planes.

Context After

In fact, the SN6800 switch box consists of four ASICs, which is similar to the X800-Q3400 switch box.

② Atomic Claim

這讓單一 1.6T GPU 可以 fan out 到兩個彼此獨立的 switch planes。

• Epistemic Mode: ASSERTED
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "attribute": "DUAL_SWITCH_PLANE_FANOUT",
  "context_nodes": [],
  "entity": {
    "id": "04_knowledge_base/GPU",
    "label": "GPU"
  },
  "frame_type": "ATTRIBUTE",
  "qualifiers": {
    "condition_text": "enabled by the SN6800 internal port split described in VR2R-0649",
    "numeric_mentions": [
      "1.6T",
      "2"
    ],
    "temporal_mentions": []
  },
  "value": {
    "numeric_mentions": [
      "1.6T",
      "2"
    ],
    "value_text": "a single 1.6T GPU can fan out to two independent switch planes."
  }
}

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。