VR2R-0662_r1

VR2R-0662

① SA Source

• Source: 開啟完整 SA 文章
• Section: Ethernet-Based Cluster Deployments
• Line hint: 573

Context Before

For Meta, we think the VR NVL72 deployments will comprise only of non-scheduled fabric (NSF) clusters built using Tomahawk 6-based Minipack-4 OCP Rack 102.4T switches in each datacenter. While Meta will be using optics to connect all the switches within its cluster, it will use 1.6T AECs for NIC-to-TOR connections once 1.6T AECs become broadly available in the market. We expect the 1.6T AEC ramp to happen in the second half of calendar year 2026.

Evidence

The catch is that 102.4T Minipack-4 switches may not be shipped in time for Vera Rubin NVL72 rack deployments

Context After

, and if this were to be the case, some NSF clusters will be shipped using 51.2T Minipack-3 switches instead. This means that gearboxes within the AECs will have to be used to convert 200G per lane SerDes speed at the NIC to 100G per lane SerDes speed at the switch.

② Atomic Claim

風險在於 102.4T Minipack-4 switches 可能來不及在 Vera Rubin NVL72 rack deployment 時出貨。

• Epistemic Mode: HYPOTHETICAL
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "additional_nodes": [],
  "frame_type": "RELATION",
  "object": {
    "id": "04_knowledge_base/Vera Rubin",
    "label": "Vera Rubin"
  },
  "predicate": "DEPLOYS",
  "qualifiers": {
    "condition_text": null,
    "numeric_mentions": [
      "102.4",
      "4 s"
    ],
    "temporal_mentions": []
  },
  "subject": {
    "id": "04_knowledge_base/Minipack-4",
    "label": "Minipack-4"
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
subject	Minipack-4	Minipack-4
object	Vera Rubin	04_knowledge_base/Vera Rubin

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。