clm_60d3a3b0cc374bc6bef34fd72f2e9411_r1

SA260324R-0236::SPLIT03

回到這篇 SA Coverage

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: 285

Context Before

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

For Rubin Ultra NVL144 Kyber, there will be no CPO used for scale up as we have told clients multiple times ↗, despite rumors from other analysts suggesting scale-up CPO introduction for Kyber. However, optics for NVLink are coming and will be progressively phased in. Scale-up CPO will first be used for the Rubin Ultra NVL 576 system to connect between 8 Oberon form factor racks, forming a two-layer all-to-all network. A copper backplane will still be used for scale-up networking within the racks however. This is still for low volume / testing purposes.

Evidence

Moving back to the Kyber Rack, each Rubin Ultra logical GPU offers 14.4Tbit/s uni-di of scale-up bandwidth, using an 80DP connector (72 DPs used x 200Gbit/s bi-di channel = 14.4Tbit/s) per GPU for connectivity to the midplane board. Connecting all 144 GPUs in an all-to-all network will require 72 NVLink 7.0 Switch Chips running at 28.8Tbit/s uni-di of aggregate bandwidth each.

Context After

Source: SemiAnalysis

② Atomic Claim

In the March 2026 Kyber prototype/design discussion: In the updated Rubin Ultra Kyber design, 72 active DPs at 200Gbit/s simultaneous bidirectional channel signaling correspond to the stated 14.4Tbit/s unidirectional GPU bandwidth.

• Epistemic Mode: ASSERTED
• Mapping Status: COMPLETE

③ Semantic Frame

{
  "attribute": "DP_BANDWIDTH_ARITHMETIC",
  "context_nodes": [],
  "entity": {
    "id": "04_knowledge_base/14.4Tbit per second",
    "label": "14.4Tbit/s"
  },
  "frame_type": "ATTRIBUTE",
  "qualifiers": {
    "condition_text": null,
    "numeric_mentions": [
      "72",
      "200Gbit/s",
      "14.4Tbit/s"
    ],
    "temporal_mentions": []
  },
  "value": {
    "numeric_mentions": [
      "72",
      "200Gbit/s",
      "14.4Tbit/s"
    ],
    "value_text": "In the March 2026 Kyber prototype/design discussion: In the updated Rubin Ultra Kyber design, 72 active DPs at 200Gbit/s simultaneous bidirectional channel signaling correspond to the stated 14.4Tbit/s unidirectional GPU bandwidth."
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
entity	14.4Tbit/s	04_knowledge_base/14.4Tbit per second

⑤ V2 Draft（需要修正時直接編輯）

Inline repair

只編輯以下三個 Draft 區塊。完成後將 review_action 設為 REQUEST_REPAIR，再手動執行 Repair Preview。
執行腳本前，Draft 不會寫入 Claim Store 或 Graph。

V2 Atomic Claim Draft

In the March 2026 Kyber prototype/design discussion: In the updated Rubin Ultra Kyber design, 72 active DPs at 200Gbit/s simultaneous bidirectional channel signaling correspond to the stated 14.4Tbit/s unidirectional GPU bandwidth.

V2 Semantic Frame Draft

{
  "attribute": "DP_BANDWIDTH_ARITHMETIC",
  "context_nodes": [],
  "entity": {
    "id": "04_knowledge_base/14.4Tbit per second",
    "label": "14.4Tbit/s"
  },
  "frame_type": "ATTRIBUTE",
  "qualifiers": {
    "condition_text": null,
    "numeric_mentions": [
      "72",
      "200Gbit/s",
      "14.4Tbit/s"
    ],
    "temporal_mentions": []
  },
  "value": {
    "numeric_mentions": [
      "72",
      "200Gbit/s",
      "14.4Tbit/s"
    ],
    "value_text": "In the March 2026 Kyber prototype/design discussion: In the updated Rubin Ultra Kyber design, 72 active DPs at 200Gbit/s simultaneous bidirectional channel signaling correspond to the stated 14.4Tbit/s unidirectional GPU bandwidth."
  }
}

V2 Revision Metadata Draft

{
  "epistemic_mode": "ASSERTED",
  "mapping_status": "COMPLETE"
}

⑥ 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。