SA260324R-0243
① SA Source
- Source: 開啟完整 SA 文章
- Section:
Oberon and Kyber Updates, Larger World Sizes Introduced, More Networking Updates - Line hint:
297
Context Before
Source: Nvidia, SemiAnalysis
Evidence
Each 28.8T NVLink Switch has 144 lanes of 200G (simultaneous bi-directional) which means each Switch has 24 lanes of 200G going to each connector. Copper flyover cables are used to connect each switch to the midplane, as the distances involved are too long for PCB traces. This is also why the switches are further away from the midplane, to provide space for the routing of the flyover cables.
Context After
Source: SemiAnalysis Networking Model ↗
② Atomic Claim
In the March 2026 Kyber prototype/design discussion: In the described Kyber switch blade, switches sit farther from the midplane to leave room for flyover cable routing.
- Epistemic Mode:
ASSERTED - Mapping Status:
PARTIAL
③ Semantic Frame
{
"frame_type": "NARY_RELATION",
"participants": [
{
"node": {
"id": "04_knowledge_base/Midplane",
"label": "midplane"
},
"role": "midplane"
},
{
"node": {
"id": "04_knowledge_base/Flyover cable",
"label": "flyover cable"
},
"role": "cable"
}
],
"qualifiers": {
"condition_text": "switch 沒有 canonical entity",
"numeric_mentions": [],
"temporal_mentions": []
},
"relation_type": "SPACES_SWITCH_FOR_FLYOVER_ROUTING"
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| midplane | midplane | Midplane |
| cable | flyover cable | 04_knowledge_base/Flyover cable |
⑤ V2 Draft（需要修正時直接編輯）
Inline repair
只編輯以下三個 Draft 區塊。完成後將
review_action設為REQUEST_REPAIR，再手動執行 Repair Preview。
執行腳本前，Draft 不會寫入 Claim Store 或 Graph。
V2 Atomic Claim Draft
In the March 2026 Kyber prototype/design discussion: In the described Kyber switch blade, switches sit farther from the midplane to leave room for flyover cable routing.
V2 Semantic Frame Draft
{
"frame_type": "NARY_RELATION",
"participants": [
{
"node": {
"id": "04_knowledge_base/Midplane",
"label": "midplane"
},
"role": "midplane"
},
{
"node": {
"id": "04_knowledge_base/Flyover cable",
"label": "flyover cable"
},
"role": "cable"
}
],
"qualifiers": {
"condition_text": "switch 沒有 canonical entity",
"numeric_mentions": [],
"temporal_mentions": []
},
"relation_type": "SPACES_SWITCH_FOR_FLYOVER_ROUTING"
}V2 Revision Metadata Draft
{
"epistemic_mode": "ASSERTED",
"mapping_status": "PARTIAL"
}⑥ 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。