SA260324R-0256
① SA Source
- Source: 開啟完整 SA 文章
- Section:
Rubin Ultra NVL288 - Line hint:
316
Context Before
The radix of the 28.8T NVLink Switch limits the number of GPUs that each switch can connect while still providing for cross-rack connectivity.
Evidence
Either a higher radix switch will have to be used - or there will have to be a degree of oversubscription in this architecture while potentially adopting a dragonfly-like network topology.
Context After
This would also require fewer DPs worth of copper cables.
② Atomic Claim
因此要嘛使用更高 radix 的 switch，要嘛讓 architecture 出現一定程度的 oversubscription，並可能採用類似 dragonfly 的 network topology。
- Epistemic Mode:
HYPOTHETICAL - Mapping Status:
PARTIAL
③ Semantic Frame
{
"frame_type": "CLAIM_ONLY",
"qualifiers": {
"condition_text": "hypothetical architecture alternatives",
"numeric_mentions": [],
"temporal_mentions": []
},
"reason": "HYPOTHETICAL_NETWORK_ARCHITECTURE_ALTERNATIVES_HAVE_NO_CANONICAL_ENTITIES",
"statement": "要嘛使用更高 radix switch，要嘛採一定程度 oversubscription，並可能使用 dragonfly-like network topology。"
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| — | — | — |
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。