SA260324R-0149_r1

SA260324R-0149

① SA Source

• Source: 開啟完整 SA 文章
• Section: LPX Compute Tray
• Line hint: 185

Context Before

Something interesting about the system is the important role the FPGAs play. Nvidia refers to the FPGAs as “Fabric Expansion Logic” which serves multiple purposes.

Evidence

First, they act as a NIC which converts the LPU’s C2C protocol into Ethernet to connect to the Spectrum-X based ethernet scale-out fabric.

Context After

It is this scale-out fabric through which the LPUs connect to GPUs in the decode system.

② Atomic Claim

首先，這些 FPGA 會充當 NIC，把 LPU 的 C2C protocol 轉成 Ethernet，以連接到以 Spectrum-X 為基礎的 Ethernet scale-out fabric。

• Epistemic Mode: ASSERTED
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "frame_type": "NARY_RELATION",
  "participants": [
    {
      "node": {
        "id": "04_knowledge_base/FPGA",
        "label": "FPGA"
      },
      "role": "fabric_expansion_logic"
    },
    {
      "node": {
        "id": "04_knowledge_base/NIC",
        "label": "NIC"
      },
      "role": "network_interface_role"
    },
    {
      "node": {
        "id": "04_knowledge_base/Groq LPU",
        "label": "LPU"
      },
      "role": "source_device"
    },
    {
      "node": {
        "id": "04_knowledge_base/Chip-to-Chip Interconnect",
        "label": "C2C"
      },
      "role": "source_protocol"
    },
    {
      "node": {
        "id": "04_knowledge_base/Ethernet",
        "label": "Ethernet"
      },
      "role": "destination_protocol"
    }
  ],
  "qualifiers": {
    "condition_text": "Spectrum-X 在此 claim 沒有 canonical mapping；FPGA 主詞由緊鄰前文的 Fabric Expansion Logic 指涉解析",
    "numeric_mentions": [],
    "temporal_mentions": []
  },
  "relation_type": "CONVERTS_C2C_TO_ETHERNET_FOR_SCALEOUT"
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
fabric_expansion_logic	FPGA	FPGA
network_interface_role	NIC	NIC
source_device	LPU	04_knowledge_base/Groq LPU
source_protocol	C2C	04_knowledge_base/Chip-to-Chip Interconnect
destination_protocol	Ethernet	Ethernet

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。