NIEK2-0166
① SA Source
- Source: 開啟完整 SA 文章
- Section:
Intra-Tray Topology - Line hint:
185
Context Before
Source: SemiAnalysis Networking Model ↗
Evidence
This is why the belly-to-belly layout is used: it reduces the ‘X’ and ‘Y’ distance between all the LPUs and instead have routing go in the ‘Z’ dimension
Context After
The LPU also has 1x100G going to one FPGA, with each FPGA interfacing with 8 LPUs. The 2 FPGAs each have 8x PCIe Gen 5 going to the CPUs. The LPU needs to traverse through the FPGA to interface with the CPU as LPUs don’t have PCIe PHYs to interface directly.
Inter-node/Intra-rack
② Atomic Claim
這也是採用 belly-to-belly layout 的原因：它縮短所有 LPU 在 ‘X’ 與 ‘Y’ 方向的距離，改由 ‘Z’ 方向進行 routing。
- Epistemic Mode:
ASSERTED - Mapping Status:
PARTIAL
③ Semantic Frame
{
"attribute": "ADOPTION_STATUS",
"context_nodes": [],
"entity": {
"id": "04_knowledge_base/Groq LPU",
"label": "LPU"
},
"frame_type": "ATTRIBUTE",
"qualifiers": {
"condition_text": null,
"numeric_mentions": [],
"temporal_mentions": []
},
"value": {
"numeric_mentions": [],
"value_text": "這也是採用 belly-to-belly layout 的原因：它縮短所有 LPU 在 ‘X’ 與 ‘Y’ 方向的距離，改由 ‘Z’ 方向進行 routing。"
}
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| entity | LPU | 04_knowledge_base/Groq LPU |
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。