SA260324R-0280
① SA Source
- Source: 開啟完整 SA 文章
- Section:
Vera ETL256 - Line hint:
348
Context Before
The Vera standalone rack addresses this directly, achieving unprecedented density by fitting 256 CPUs into a single rack — a feat that necessitates liquid cooling.
Evidence
The underlying rationale mirrors the NVL rack design philosophy: pack compute tightly enough that copper interconnects can reach everything within the rack, eliminating the need for optical transceivers on the spine.
Context After
The cost savings from copper more than offset the additional cooling overhead.
② Atomic Claim
其設計邏輯與 NVL rack 類似：把 compute 壓得足夠緊密，使 copper interconnect 能覆蓋整個 rack，從而不需要 spine 上的 optical transceivers。
- Epistemic Mode:
ASSERTED - Mapping Status:
COMPLETE
③ Semantic Frame
{
"frame_type": "NARY_RELATION",
"participants": [
{
"node": {
"id": "04_knowledge_base/Copper",
"label": "copper"
},
"role": "interconnect"
},
{
"node": {
"id": "04_knowledge_base/Optical transceiver",
"label": "optical transceiver"
},
"role": "avoided_component"
}
],
"qualifiers": {
"condition_text": "compute packed tightly enough for copper reach within rack",
"numeric_mentions": [],
"temporal_mentions": []
},
"relation_type": "DENSE_RACK_DESIGN_REDUCES_OPTICAL_TRANSCEIVER_NEED"
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| interconnect | copper | Copper |
| avoided_component | optical transceiver | 04_knowledge_base/Optical transceiver |
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。