SA260324R-0227_r1

SA260324R-0227

① SA Source

• Source: 開啟完整 SA 文章
• Section: Oberon and Kyber Updates, Larger World Sizes Introduced, More Networking Updates
• Line hint: 282

Context Before

Each switch blade is also double in height vs the GTC 2025 prototype, with 6 NVLink 7 switches per switch blade, and 12 switch blades per rack, amounting to a total of 72 NVLink 7 switches per Kyber rack.

Evidence

The GPUs are connected all-to-all to the switch blades via 2 PCB midplanes or 1 midplane per canister.

Context After

Kyber midplane PCB (GPU side). Source: Nvidia, SemiAnalysis

② Atomic Claim

GPU 會以 all-to-all 方式連到 switch blade，透過 2 個 PCB midplane，或等價地每個 canister 1 個 midplane。

• Epistemic Mode: ASSERTED
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "frame_type": "NARY_RELATION",
  "participants": [
    {
      "node": {
        "id": "04_knowledge_base/GPU",
        "label": "GPU"
      },
      "role": "compute_device"
    },
    {
      "node": {
        "id": "04_knowledge_base/PCB",
        "label": "PCB"
      },
      "role": "board"
    },
    {
      "node": {
        "id": "04_knowledge_base/Midplane",
        "label": "midplane"
      },
      "role": "midplane"
    }
  ],
  "qualifiers": {
    "condition_text": "switch blade 與 canister 沒有 canonical entity",
    "numeric_mentions": [
      "2",
      "1"
    ],
    "temporal_mentions": []
  },
  "relation_type": "GPU_TO_SWITCH_BLADE_MIDPLANE_CONNECTIVITY"
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
compute_device	GPU	GPU
board	PCB	PCB
midplane	midplane	Midplane

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。