SA260324R-0354
① SA Source
- Source: 開啟完整 SA 文章
- Section:
NVL288 System - Line hint:
448
Context Before
For the Vera Rubin Ultra NVL288 System that we discussed above, we would say the cable backplane return for Kyber. If Rubin Ultra is deployed in such a form factor – each of the Rubin Ultra GPUs will have a scale-up bandwidth of 14.4Tbit/s uni-di, requiring 144 DPs of cables to connect to the NVSwitches. 144 DPs times 288 GPUs means a total of 41,472 DPs to connect this larger world size domain. This is a lot of cables, so it is more of an upper bound of how much cable content could be used here.
Evidence
If there is oversubscription or if the inter-rack connection is made through the switches – it is possible fewer DPs would be needed.
Context After
② Atomic Claim
如果採 oversubscription，或 inter-rack connection 透過 switch 完成，所需 DP 數量可能更少。
- Epistemic Mode:
HYPOTHETICAL - Mapping Status:
PARTIAL
③ Semantic Frame
{
"frame_type": "CLAIM_ONLY",
"qualifiers": {
"condition_text": "hypothetical architecture alternative",
"numeric_mentions": [],
"temporal_mentions": []
},
"reason": "HYPOTHETICAL_TOPOLOGY_EFFECT_WITH_UNMAPPED_DP_AND_OVERSUBSCRIPTION",
"statement": "如果採 oversubscription，或 inter-rack connection 透過 switch 完成，所需 DP 數量可能更少。"
}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。