{
  "run_id": "gpt-oss-120b-wan-20260619",
  "utc": "2026-06-19T09:57:01.128915Z",
  "shard_commit": "40ca820bdb2c4e772e48635d9386d67db150ed31",
  "engine_file": "phase0/specpipe.py",
  "engine_sha256": "59bf2a8f3189bde28148c201eac32774f207ca8c149159e599a5e227316d3ea4",
  "model": "gpt-oss-120b",
  "quant": "mxfp4",
  "topology": "3 stages of 12 layers each + an in-region coordinator (draft only); 4-hop ring",
  "prompt": "Explain decentralized computing in two sentences.",
  "output_text": "analysisNeed to answer concisely: two sentences. Provide definition and key aspects.assistantfinalDecentralized computing distributes processing, storage, and decision\u2011making across a network of independent nodes rather than relying on a single central server or data center. This architecture enhances fault tolerance, scalability, and privacy by allowing each node to operate autonomously while still collaborating through consensus or peer\u2011to\u2011peer protocols.",
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  "output_sha256": "f646e0dbe2b3c695b9f495d508fbc0a8d96ba938e90eb845fda69f65c1873f70",
  "tok_s_warm": 39.8,
  "decode": "greedy (exact)",
  "nodes": [
    {
      "role": "coordinator",
      "layer_range": null,
      "public_ip": "136.59.129.136",
      "geo": "Utah, US",
      "gpu_uuid": "GPU-1eb664cd-c6f9-387c-682e-d7225edc76fb",
      "gpu_name": "NVIDIA GeForce RTX 4090",
      "note": "holds no 120B layers; runs the gpt-oss-20b vLLM draft + drives generation"
    },
    {
      "role": "stage0 (served-head)",
      "layer_range": [
        0,
        11
      ],
      "public_ip": "66.114.157.224",
      "geo": "California, US",
      "gpu_uuid": "GPU-0abcaebf-4660-6386-eebe-3dabdbb39a73",
      "gpu_name": "NVIDIA GeForce RTX 4090"
    },
    {
      "role": "stage1",
      "layer_range": [
        12,
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      "public_ip": "173.239.95.142",
      "geo": "Nevada, US",
      "gpu_uuid": "GPU-5d73df3c-5537-1808-c8a7-90bb2cab0b53",
      "gpu_name": "NVIDIA GeForce RTX 4090"
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    {
      "role": "tail",
      "layer_range": [
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      "public_ip": "76.121.3.151",
      "geo": "Washington, US",
      "gpu_uuid": "GPU-3939cfdc-a999-dbfb-1c9b-512b7a97c693",
      "gpu_name": "NVIDIA GeForce RTX 4090"
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    {
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      "rtt_ms": 40.0
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    {
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  "reference": {
    "source": "within-engine: synchronous vs pipelined coordinator, same engine, both greedy",
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