VR2-0640
① SA Source
- Source: 開啟完整 SA 文章
- Section:
Connecting GPUs in the Scale-Out InfiniBand Network - Line hint:
781
Context Before
Source: SemiAnalysis AI Networking Model ↗
Evidence
We think the second cluster with two switch planes will likely be the more prevalent reference architecture for Vera Rubin NVL72 InfiniBand deployments
Context After
Aside from the X800-Q3400 air-cooled switch, NVIDIA will also offer a CPO version, which is the X800-Q3450 containing the same 144 ports of 800G. As pointed out earlier, what is unique about both switches is that each switch box consists of four 28.8T Quantum-3 Switch ASICs for a total of 115.2T per box switching capacity. When used in conjunction with the VR NVL72 servers, the signal from the NIC at the leaf layer is split four ways – 200G each way – to each switch ASIC within the box. Such a configuration bears logical equivalence to a 4-plane network architecture.
② Atomic Claim
SemiAnalysis 認為，使用兩個 switch planes 的第二種 cluster，可能會成為 Vera Rubin NVL72 InfiniBand deployment 更普遍的 reference architecture。
- Epistemic Mode:
EXPECTED - Mapping Status:
PARTIAL
③ Semantic Frame
{
"additional_nodes": [],
"frame_type": "RELATION",
"object": {
"id": "04_knowledge_base/InfiniBand",
"label": "InfiniBand"
},
"predicate": "USES",
"qualifiers": {
"condition_text": null,
"numeric_mentions": [],
"temporal_mentions": []
},
"subject": {
"id": "04_knowledge_base/Vera Rubin",
"label": "Vera Rubin"
}
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| subject | Vera Rubin | 04_knowledge_base/Vera Rubin |
| object | InfiniBand | InfiniBand |
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。