SA260324R-0182_r1

SA260324R-0182

① SA Source

• Source: 開啟完整 SA 文章
• Section: Inter-rack
• Line hint: 223

Context Before

Lastly, there is the inter-rack C2C.

Evidence

Each LPU has 4x100G lanes that go to the OSFP cages to connect LPUs across 4 racks.

Context After

There are various configurations that can be used for this inter-rack scale up. One option is 4x100G from each LPU going to one OSFP cage, each OSFP escaping 800G of C2C from 2 LPUs. However, for greater fan out the preferred configuration seems to be each 100G lane from the LPU going to 4 individual cages, with each cage escaping 800G of C2C from 8 LPUs.

② Atomic Claim

每顆 LPU 有 4×100G lanes 連到 OSFP cage，用來跨 4 個 rack 連接 LPU。

• Epistemic Mode: ASSERTED
• Mapping Status: COMPLETE

③ Semantic Frame

{
  "frame_type": "NARY_RELATION",
  "participants": [
    {
      "node": {
        "id": "04_knowledge_base/Groq LPU",
        "label": "LPU"
      },
      "role": "accelerator"
    },
    {
      "node": {
        "id": "04_knowledge_base/OSFP (Octal Small Form-factor Pluggable)",
        "label": "OSFP"
      },
      "role": "connector"
    }
  ],
  "qualifiers": {
    "condition_text": "跨 4 個 racks",
    "numeric_mentions": [
      "4x100G",
      "4"
    ],
    "temporal_mentions": []
  },
  "relation_type": "INTERRACK_LPU_CONNECTIVITY_VIA_OSFP"
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
accelerator	LPU	04_knowledge_base/Groq LPU
connector	OSFP	04_knowledge_base/OSFP (Octal Small Form-factor Pluggable)

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。