{
  "schema": "coreai-letter-llm-benchmark/1",
  "status": "PASS",
  "round": 3,
  "model_license": "cc-by-nc-4.0",
  "source_hf_id": "pngwn/system-one-qwen3.5-4b-scorer",
  "round_clock": {
    "round": 3,
    "start_epoch": 1790120901.0,
    "deadline_epoch": 1790129901.0,
    "start_utc": "2026-09-22T23:48:21+00:00",
    "deadline_utc": "2026-09-23T02:18:21+00:00",
    "limit_seconds": 9000,
    "fence": "OPEN",
    "device": "Apple M4 Max, 128 GiB RAM, macOS 27.0 (26A428)",
    "license": "cc-by-nc-4.0",
    "timing": "A: quiet-window GPU throughput; B: correctness only",
    "result": "RUNNING"
  },
  "device": "Apple M4 Max GPU",
  "macos": "27.0 (26A428)",
  "build": "Release 0.2.4-zoo f7a75ec + local engine-option patch, Xcode 27.0 (27A266a)",
  "binary": {
    "name": "llm-benchmark",
    "path": "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/swift-build-round3/out/Products/Release/llm-benchmark",
    "size_bytes": 17060736,
    "sha256": "cb82aa37f9e5fe1d709786e5bdb4312026b54257d5201d6c161fdcfec69c3d6f"
  },
  "bundle": "exports/system_one_qwen3_5_4b_scorer_decode_int8lin",
  "env": {
    "COREAI_CHUNK_THRESHOLD": "1"
  },
  "num_trials_per_engine": 6,
  "num_launches_per_engine": 2,
  "prompt_tokens": 128,
  "generation_tokens": 256,
  "driver_pid": 36232,
  "launches": [
    {
      "launch": 1,
      "engine": "coreai-pipelined",
      "command": [
        "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/swift-build-round3/out/Products/Release/llm-benchmark",
        "--model",
        "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/exports/system_one_qwen3_5_4b_scorer_decode_int8lin",
        "-p",
        "128",
        "-g",
        "256",
        "-n",
        "3",
        "--inference-engine-variant",
        "coreai-pipelined",
        "--output-json",
        "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/results/round3/llm-benchmark-coreai-pipelined-1.json"
      ],
      "stdout_stderr": "logs/round3-llm-benchmark-coreai-pipelined-1.log",
      "tool_json": "results/round3/llm-benchmark-coreai-pipelined-1.json",
      "started_utc": "2026-09-22T23:53:38.870229+00:00",
      "pid": 36239,
      "returncode": 0,
      "wall_seconds": 18.499330250080675,
      "completed_utc": "2026-09-22T23:53:57.369655+00:00",
      "load_seconds": 0.739691416,
      "warmup_seconds": 4.46210025,
      "cache_hit": true,
      "trials": [
        {
          "engine": "coreai-pipelined",
          "launch": 1,
          "trial": 1,
          "prefill_tokens_per_second": 88.93445488917162,
          "decode_tokens_per_second": 88.71065843803855,
          "load_seconds": 0.739691416
        },
        {
          "engine": "coreai-pipelined",
          "launch": 1,
          "trial": 2,
          "prefill_tokens_per_second": 88.54623090132424,
          "decode_tokens_per_second": 88.4022233937123,
          "load_seconds": 0.739691416
        },
        {
          "engine": "coreai-pipelined",
          "launch": 1,
          "trial": 3,
          "prefill_tokens_per_second": 88.74753735810599,
          "decode_tokens_per_second": 87.16880591632776,
          "load_seconds": 0.739691416
        }
      ]
    },
    {
      "launch": 1,
      "engine": "coreai-sequential",
      "command": [
        "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/swift-build-round3/out/Products/Release/llm-benchmark",
        "--model",
        "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/exports/system_one_qwen3_5_4b_scorer_decode_int8lin",
        "-p",
        "128",
        "-g",
        "256",
        "-n",
        "3",
        "--inference-engine-variant",
        "coreai-sequential",
        "--output-json",
        "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/results/round3/llm-benchmark-coreai-sequential-1.json"
      ],
      "stdout_stderr": "logs/round3-llm-benchmark-coreai-sequential-1.log",
      "tool_json": "results/round3/llm-benchmark-coreai-sequential-1.json",
      "started_utc": "2026-09-22T23:53:57.436833+00:00",
      "pid": 37400,
      "returncode": 0,
      "wall_seconds": 21.443092125002295,
      "completed_utc": "2026-09-22T23:54:18.880033+00:00",
      "load_seconds": 0.725136917,
      "warmup_seconds": 5.24364125,
      "cache_hit": true,
      "trials": [
        {
          "engine": "coreai-sequential",
          "launch": 1,
          "trial": 1,
          "prefill_tokens_per_second": 76.12615226528999,
          "decode_tokens_per_second": 75.29859769649778,
          "load_seconds": 0.725136917
        },
        {
          "engine": "coreai-sequential",
          "launch": 1,
          "trial": 2,
          "prefill_tokens_per_second": 75.86147405378841,
          "decode_tokens_per_second": 75.29623163036149,
          "load_seconds": 0.725136917
        },
        {
          "engine": "coreai-sequential",
          "launch": 1,
          "trial": 3,
          "prefill_tokens_per_second": 76.27288568381854,
          "decode_tokens_per_second": 75.53109934649305,
          "load_seconds": 0.725136917
        }
      ]
    },
    {
      "launch": 2,
      "engine": "coreai-pipelined",
      "command": [
        "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/swift-build-round3/out/Products/Release/llm-benchmark",
        "--model",
        "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/exports/system_one_qwen3_5_4b_scorer_decode_int8lin",
        "-p",
        "128",
        "-g",
        "256",
        "-n",
        "3",
        "--inference-engine-variant",
        "coreai-pipelined",
        "--output-json",
        "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/results/round3/llm-benchmark-coreai-pipelined-2.json"
      ],
      "stdout_stderr": "logs/round3-llm-benchmark-coreai-pipelined-2.log",
      "tool_json": "results/round3/llm-benchmark-coreai-pipelined-2.json",
      "started_utc": "2026-09-22T23:54:18.948016+00:00",
      "pid": 38425,
      "returncode": 0,
      "wall_seconds": 18.18477820896078,
      "completed_utc": "2026-09-22T23:54:37.132890+00:00",
      "load_seconds": 0.65903675,
      "warmup_seconds": 4.409661,
      "cache_hit": true,
      "trials": [
        {
          "engine": "coreai-pipelined",
          "launch": 2,
          "trial": 1,
          "prefill_tokens_per_second": 89.97606847459987,
          "decode_tokens_per_second": 89.50959536596652,
          "load_seconds": 0.65903675
        },
        {
          "engine": "coreai-pipelined",
          "launch": 2,
          "trial": 2,
          "prefill_tokens_per_second": 89.76007058799271,
          "decode_tokens_per_second": 89.484328135873,
          "load_seconds": 0.65903675
        },
        {
          "engine": "coreai-pipelined",
          "launch": 2,
          "trial": 3,
          "prefill_tokens_per_second": 90.10707604764856,
          "decode_tokens_per_second": 89.07818099385138,
          "load_seconds": 0.65903675
        }
      ]
    },
    {
      "launch": 2,
      "engine": "coreai-sequential",
      "command": [
        "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/swift-build-round3/out/Products/Release/llm-benchmark",
        "--model",
        "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/exports/system_one_qwen3_5_4b_scorer_decode_int8lin",
        "-p",
        "128",
        "-g",
        "256",
        "-n",
        "3",
        "--inference-engine-variant",
        "coreai-sequential",
        "--output-json",
        "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/results/round3/llm-benchmark-coreai-sequential-2.json"
      ],
      "stdout_stderr": "logs/round3-llm-benchmark-coreai-sequential-2.log",
      "tool_json": "results/round3/llm-benchmark-coreai-sequential-2.json",
      "started_utc": "2026-09-22T23:54:37.203113+00:00",
      "pid": 39411,
      "returncode": 0,
      "wall_seconds": 21.413501666975208,
      "completed_utc": "2026-09-22T23:54:58.616721+00:00",
      "load_seconds": 0.671255459,
      "warmup_seconds": 5.222092542,
      "cache_hit": true,
      "trials": [
        {
          "engine": "coreai-sequential",
          "launch": 2,
          "trial": 1,
          "prefill_tokens_per_second": 76.05521411989912,
          "decode_tokens_per_second": 74.9605832119629,
          "load_seconds": 0.671255459
        },
        {
          "engine": "coreai-sequential",
          "launch": 2,
          "trial": 2,
          "prefill_tokens_per_second": 76.02357502940346,
          "decode_tokens_per_second": 75.31637678561384,
          "load_seconds": 0.671255459
        },
        {
          "engine": "coreai-sequential",
          "launch": 2,
          "trial": 3,
          "prefill_tokens_per_second": 75.70149934324543,
          "decode_tokens_per_second": 74.70457727759012,
          "load_seconds": 0.671255459
        }
      ]
    }
  ],
  "trials": [
    {
      "engine": "coreai-pipelined",
      "launch": 1,
      "trial": 1,
      "prefill_tokens_per_second": 88.93445488917162,
      "decode_tokens_per_second": 88.71065843803855,
      "load_seconds": 0.739691416
    },
    {
      "engine": "coreai-pipelined",
      "launch": 1,
      "trial": 2,
      "prefill_tokens_per_second": 88.54623090132424,
      "decode_tokens_per_second": 88.4022233937123,
      "load_seconds": 0.739691416
    },
    {
      "engine": "coreai-pipelined",
      "launch": 1,
      "trial": 3,
      "prefill_tokens_per_second": 88.74753735810599,
      "decode_tokens_per_second": 87.16880591632776,
      "load_seconds": 0.739691416
    },
    {
      "engine": "coreai-sequential",
      "launch": 1,
      "trial": 1,
      "prefill_tokens_per_second": 76.12615226528999,
      "decode_tokens_per_second": 75.29859769649778,
      "load_seconds": 0.725136917
    },
    {
      "engine": "coreai-sequential",
      "launch": 1,
      "trial": 2,
      "prefill_tokens_per_second": 75.86147405378841,
      "decode_tokens_per_second": 75.29623163036149,
      "load_seconds": 0.725136917
    },
    {
      "engine": "coreai-sequential",
      "launch": 1,
      "trial": 3,
      "prefill_tokens_per_second": 76.27288568381854,
      "decode_tokens_per_second": 75.53109934649305,
      "load_seconds": 0.725136917
    },
    {
      "engine": "coreai-pipelined",
      "launch": 2,
      "trial": 1,
      "prefill_tokens_per_second": 89.97606847459987,
      "decode_tokens_per_second": 89.50959536596652,
      "load_seconds": 0.65903675
    },
    {
      "engine": "coreai-pipelined",
      "launch": 2,
      "trial": 2,
      "prefill_tokens_per_second": 89.76007058799271,
      "decode_tokens_per_second": 89.484328135873,
      "load_seconds": 0.65903675
    },
    {
      "engine": "coreai-pipelined",
      "launch": 2,
      "trial": 3,
      "prefill_tokens_per_second": 90.10707604764856,
      "decode_tokens_per_second": 89.07818099385138,
      "load_seconds": 0.65903675
    },
    {
      "engine": "coreai-sequential",
      "launch": 2,
      "trial": 1,
      "prefill_tokens_per_second": 76.05521411989912,
      "decode_tokens_per_second": 74.9605832119629,
      "load_seconds": 0.671255459
    },
    {
      "engine": "coreai-sequential",
      "launch": 2,
      "trial": 2,
      "prefill_tokens_per_second": 76.02357502940346,
      "decode_tokens_per_second": 75.31637678561384,
      "load_seconds": 0.671255459
    },
    {
      "engine": "coreai-sequential",
      "launch": 2,
      "trial": 3,
      "prefill_tokens_per_second": 75.70149934324543,
      "decode_tokens_per_second": 74.70457727759012,
      "load_seconds": 0.671255459
    }
  ],
  "engines": {
    "coreai-pipelined": {
      "engine": "coreai-pipelined",
      "num_trials": 6,
      "num_launches": 2,
      "trials": [
        {
          "engine": "coreai-pipelined",
          "launch": 1,
          "trial": 1,
          "prefill_tokens_per_second": 88.93445488917162,
          "decode_tokens_per_second": 88.71065843803855,
          "load_seconds": 0.739691416
        },
        {
          "engine": "coreai-pipelined",
          "launch": 1,
          "trial": 2,
          "prefill_tokens_per_second": 88.54623090132424,
          "decode_tokens_per_second": 88.4022233937123,
          "load_seconds": 0.739691416
        },
        {
          "engine": "coreai-pipelined",
          "launch": 1,
          "trial": 3,
          "prefill_tokens_per_second": 88.74753735810599,
          "decode_tokens_per_second": 87.16880591632776,
          "load_seconds": 0.739691416
        },
        {
          "engine": "coreai-pipelined",
          "launch": 2,
          "trial": 1,
          "prefill_tokens_per_second": 89.97606847459987,
          "decode_tokens_per_second": 89.50959536596652,
          "load_seconds": 0.65903675
        },
        {
          "engine": "coreai-pipelined",
          "launch": 2,
          "trial": 2,
          "prefill_tokens_per_second": 89.76007058799271,
          "decode_tokens_per_second": 89.484328135873,
          "load_seconds": 0.65903675
        },
        {
          "engine": "coreai-pipelined",
          "launch": 2,
          "trial": 3,
          "prefill_tokens_per_second": 90.10707604764856,
          "decode_tokens_per_second": 89.07818099385138,
          "load_seconds": 0.65903675
        }
      ],
      "launches": [
        {
          "launch": 1,
          "engine": "coreai-pipelined",
          "command": [
            "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/swift-build-round3/out/Products/Release/llm-benchmark",
            "--model",
            "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/exports/system_one_qwen3_5_4b_scorer_decode_int8lin",
            "-p",
            "128",
            "-g",
            "256",
            "-n",
            "3",
            "--inference-engine-variant",
            "coreai-pipelined",
            "--output-json",
            "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/results/round3/llm-benchmark-coreai-pipelined-1.json"
          ],
          "stdout_stderr": "logs/round3-llm-benchmark-coreai-pipelined-1.log",
          "tool_json": "results/round3/llm-benchmark-coreai-pipelined-1.json",
          "started_utc": "2026-09-22T23:53:38.870229+00:00",
          "pid": 36239,
          "returncode": 0,
          "wall_seconds": 18.499330250080675,
          "completed_utc": "2026-09-22T23:53:57.369655+00:00",
          "load_seconds": 0.739691416,
          "warmup_seconds": 4.46210025,
          "cache_hit": true,
          "trials": [
            {
              "engine": "coreai-pipelined",
              "launch": 1,
              "trial": 1,
              "prefill_tokens_per_second": 88.93445488917162,
              "decode_tokens_per_second": 88.71065843803855,
              "load_seconds": 0.739691416
            },
            {
              "engine": "coreai-pipelined",
              "launch": 1,
              "trial": 2,
              "prefill_tokens_per_second": 88.54623090132424,
              "decode_tokens_per_second": 88.4022233937123,
              "load_seconds": 0.739691416
            },
            {
              "engine": "coreai-pipelined",
              "launch": 1,
              "trial": 3,
              "prefill_tokens_per_second": 88.74753735810599,
              "decode_tokens_per_second": 87.16880591632776,
              "load_seconds": 0.739691416
            }
          ]
        },
        {
          "launch": 2,
          "engine": "coreai-pipelined",
          "command": [
            "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/swift-build-round3/out/Products/Release/llm-benchmark",
            "--model",
            "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/exports/system_one_qwen3_5_4b_scorer_decode_int8lin",
            "-p",
            "128",
            "-g",
            "256",
            "-n",
            "3",
            "--inference-engine-variant",
            "coreai-pipelined",
            "--output-json",
            "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/results/round3/llm-benchmark-coreai-pipelined-2.json"
          ],
          "stdout_stderr": "logs/round3-llm-benchmark-coreai-pipelined-2.log",
          "tool_json": "results/round3/llm-benchmark-coreai-pipelined-2.json",
          "started_utc": "2026-09-22T23:54:18.948016+00:00",
          "pid": 38425,
          "returncode": 0,
          "wall_seconds": 18.18477820896078,
          "completed_utc": "2026-09-22T23:54:37.132890+00:00",
          "load_seconds": 0.65903675,
          "warmup_seconds": 4.409661,
          "cache_hit": true,
          "trials": [
            {
              "engine": "coreai-pipelined",
              "launch": 2,
              "trial": 1,
              "prefill_tokens_per_second": 89.97606847459987,
              "decode_tokens_per_second": 89.50959536596652,
              "load_seconds": 0.65903675
            },
            {
              "engine": "coreai-pipelined",
              "launch": 2,
              "trial": 2,
              "prefill_tokens_per_second": 89.76007058799271,
              "decode_tokens_per_second": 89.484328135873,
              "load_seconds": 0.65903675
            },
            {
              "engine": "coreai-pipelined",
              "launch": 2,
              "trial": 3,
              "prefill_tokens_per_second": 90.10707604764856,
              "decode_tokens_per_second": 89.07818099385138,
              "load_seconds": 0.65903675
            }
          ]
        }
      ],
      "load_seconds_per_launch": [
        0.739691416,
        0.65903675
      ],
      "median_prefill_tokens_per_second": 89.34726273858217,
      "min_prefill_tokens_per_second": 88.54623090132424,
      "max_prefill_tokens_per_second": 90.10707604764856,
      "median_decode_tokens_per_second": 88.89441971594496,
      "min_decode_tokens_per_second": 87.16880591632776,
      "max_decode_tokens_per_second": 89.50959536596652,
      "median_load_seconds": 0.699364083,
      "min_load_seconds": 0.65903675,
      "max_load_seconds": 0.739691416
    },
    "coreai-sequential": {
      "engine": "coreai-sequential",
      "num_trials": 6,
      "num_launches": 2,
      "trials": [
        {
          "engine": "coreai-sequential",
          "launch": 1,
          "trial": 1,
          "prefill_tokens_per_second": 76.12615226528999,
          "decode_tokens_per_second": 75.29859769649778,
          "load_seconds": 0.725136917
        },
        {
          "engine": "coreai-sequential",
          "launch": 1,
          "trial": 2,
          "prefill_tokens_per_second": 75.86147405378841,
          "decode_tokens_per_second": 75.29623163036149,
          "load_seconds": 0.725136917
        },
        {
          "engine": "coreai-sequential",
          "launch": 1,
          "trial": 3,
          "prefill_tokens_per_second": 76.27288568381854,
          "decode_tokens_per_second": 75.53109934649305,
          "load_seconds": 0.725136917
        },
        {
          "engine": "coreai-sequential",
          "launch": 2,
          "trial": 1,
          "prefill_tokens_per_second": 76.05521411989912,
          "decode_tokens_per_second": 74.9605832119629,
          "load_seconds": 0.671255459
        },
        {
          "engine": "coreai-sequential",
          "launch": 2,
          "trial": 2,
          "prefill_tokens_per_second": 76.02357502940346,
          "decode_tokens_per_second": 75.31637678561384,
          "load_seconds": 0.671255459
        },
        {
          "engine": "coreai-sequential",
          "launch": 2,
          "trial": 3,
          "prefill_tokens_per_second": 75.70149934324543,
          "decode_tokens_per_second": 74.70457727759012,
          "load_seconds": 0.671255459
        }
      ],
      "launches": [
        {
          "launch": 1,
          "engine": "coreai-sequential",
          "command": [
            "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/swift-build-round3/out/Products/Release/llm-benchmark",
            "--model",
            "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/exports/system_one_qwen3_5_4b_scorer_decode_int8lin",
            "-p",
            "128",
            "-g",
            "256",
            "-n",
            "3",
            "--inference-engine-variant",
            "coreai-sequential",
            "--output-json",
            "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/results/round3/llm-benchmark-coreai-sequential-1.json"
          ],
          "stdout_stderr": "logs/round3-llm-benchmark-coreai-sequential-1.log",
          "tool_json": "results/round3/llm-benchmark-coreai-sequential-1.json",
          "started_utc": "2026-09-22T23:53:57.436833+00:00",
          "pid": 37400,
          "returncode": 0,
          "wall_seconds": 21.443092125002295,
          "completed_utc": "2026-09-22T23:54:18.880033+00:00",
          "load_seconds": 0.725136917,
          "warmup_seconds": 5.24364125,
          "cache_hit": true,
          "trials": [
            {
              "engine": "coreai-sequential",
              "launch": 1,
              "trial": 1,
              "prefill_tokens_per_second": 76.12615226528999,
              "decode_tokens_per_second": 75.29859769649778,
              "load_seconds": 0.725136917
            },
            {
              "engine": "coreai-sequential",
              "launch": 1,
              "trial": 2,
              "prefill_tokens_per_second": 75.86147405378841,
              "decode_tokens_per_second": 75.29623163036149,
              "load_seconds": 0.725136917
            },
            {
              "engine": "coreai-sequential",
              "launch": 1,
              "trial": 3,
              "prefill_tokens_per_second": 76.27288568381854,
              "decode_tokens_per_second": 75.53109934649305,
              "load_seconds": 0.725136917
            }
          ]
        },
        {
          "launch": 2,
          "engine": "coreai-sequential",
          "command": [
            "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/swift-build-round3/out/Products/Release/llm-benchmark",
            "--model",
            "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/exports/system_one_qwen3_5_4b_scorer_decode_int8lin",
            "-p",
            "128",
            "-g",
            "256",
            "-n",
            "3",
            "--inference-engine-variant",
            "coreai-sequential",
            "--output-json",
            "/Users/majimadaisuke/code/codex-conversions/2026-09-23/pngwn-scorer-4b-coreai/results/round3/llm-benchmark-coreai-sequential-2.json"
          ],
          "stdout_stderr": "logs/round3-llm-benchmark-coreai-sequential-2.log",
          "tool_json": "results/round3/llm-benchmark-coreai-sequential-2.json",
          "started_utc": "2026-09-22T23:54:37.203113+00:00",
          "pid": 39411,
          "returncode": 0,
          "wall_seconds": 21.413501666975208,
          "completed_utc": "2026-09-22T23:54:58.616721+00:00",
          "load_seconds": 0.671255459,
          "warmup_seconds": 5.222092542,
          "cache_hit": true,
          "trials": [
            {
              "engine": "coreai-sequential",
              "launch": 2,
              "trial": 1,
              "prefill_tokens_per_second": 76.05521411989912,
              "decode_tokens_per_second": 74.9605832119629,
              "load_seconds": 0.671255459
            },
            {
              "engine": "coreai-sequential",
              "launch": 2,
              "trial": 2,
              "prefill_tokens_per_second": 76.02357502940346,
              "decode_tokens_per_second": 75.31637678561384,
              "load_seconds": 0.671255459
            },
            {
              "engine": "coreai-sequential",
              "launch": 2,
              "trial": 3,
              "prefill_tokens_per_second": 75.70149934324543,
              "decode_tokens_per_second": 74.70457727759012,
              "load_seconds": 0.671255459
            }
          ]
        }
      ],
      "load_seconds_per_launch": [
        0.725136917,
        0.671255459
      ],
      "median_prefill_tokens_per_second": 76.03939457465128,
      "min_prefill_tokens_per_second": 75.70149934324543,
      "max_prefill_tokens_per_second": 76.27288568381854,
      "median_decode_tokens_per_second": 75.29741466342963,
      "min_decode_tokens_per_second": 74.70457727759012,
      "max_decode_tokens_per_second": 75.53109934649305,
      "median_load_seconds": 0.698196188,
      "min_load_seconds": 0.671255459,
      "max_load_seconds": 0.725136917
    }
  },
  "interpretation": "S=1 prefill-rate proxy over 128 synthetic input tokens. The scalar head has output width 1, so llm-benchmark samples prompt id 0 and always emits id 0; generated tokens are meaningless as text. Decode throughput is recorded only as a rate, not task quality or question latency. No coreai-kit throughput was measured in this round.",
  "contention_rule": "Preserve sibling top-eight ps snapshots and additionally inspect full process commands for active Python inference or engine executables; ordinary desktop services are excluded. A quiet inference window is required; no competing GPU job is permitted.",
  "snapshots": [
    {
      "path": "results/round3/ps-before.txt",
      "full_path": "results/round3/ps-before-full.txt",
      "args_path": "results/round3/ps-before-args.txt",
      "at": "2026-09-22T23:53:38.803366+00:00",
      "engine_jobs": []
    },
    {
      "path": "results/round3/ps-coreai-pipelined-1-before.txt",
      "full_path": "results/round3/ps-coreai-pipelined-1-before-full.txt",
      "args_path": "results/round3/ps-coreai-pipelined-1-before-args.txt",
      "at": "2026-09-22T23:53:38.870203+00:00",
      "engine_jobs": []
    },
    {
      "path": "results/round3/ps-coreai-sequential-1-before.txt",
      "full_path": "results/round3/ps-coreai-sequential-1-before-full.txt",
      "args_path": "results/round3/ps-coreai-sequential-1-before-args.txt",
      "at": "2026-09-22T23:53:57.436808+00:00",
      "engine_jobs": []
    },
    {
      "path": "results/round3/ps-coreai-pipelined-2-before.txt",
      "full_path": "results/round3/ps-coreai-pipelined-2-before-full.txt",
      "args_path": "results/round3/ps-coreai-pipelined-2-before-args.txt",
      "at": "2026-09-22T23:54:18.947992+00:00",
      "engine_jobs": []
    },
    {
      "path": "results/round3/ps-coreai-sequential-2-before.txt",
      "full_path": "results/round3/ps-coreai-sequential-2-before-full.txt",
      "args_path": "results/round3/ps-coreai-sequential-2-before-args.txt",
      "at": "2026-09-22T23:54:37.203076+00:00",
      "engine_jobs": []
    },
    {
      "path": "results/round3/ps-after.txt",
      "full_path": "results/round3/ps-after-full.txt",
      "args_path": "results/round3/ps-after-args.txt",
      "at": "2026-09-22T23:54:58.686512+00:00",
      "engine_jobs": []
    }
  ],
  "contended": false,
  "started_utc": "2026-09-22T23:53:38.731320+00:00",
  "gpu_lock": {
    "path": "/Users/majimadaisuke/code/coreai/_GPU_LOCK",
    "method": "fcntl.flock LOCK_EX|LOCK_NB, tagged only while A runs; original untagged bytes restored on release",
    "released": true,
    "initial_contents": "",
    "tag": "pngwn-scorer-4b-coreai round3 A pid=36232 2026-09-22T23:53:38.803380+00:00\n",
    "acquired_utc": "2026-09-22T23:53:38.803481+00:00",
    "released_utc": "2026-09-22T23:54:58.686636+00:00",
    "restored_initial_contents": ""
  },
  "background_activity_note": "Quiet refers to inference workloads; desktop, Spotlight indexing and other CPU-only system activity may remain.",
  "benchmark_process_wall_seconds": 79.95443275000434,
  "load_measurement": "llm-benchmark prepare_seconds: EngineFactory creation; per launch, not per trial; excludes warmup.",
  "completed_utc": "2026-09-22T23:54:58.686575+00:00",
  "prior_attempt": {
    "path": "results/round3/benchmark-first-attempt",
    "outcome": "Stopped before launch3 after conservative Python-process check observed PID34398 .venv/bin/python scripts/verify_snapshot.py at98.8% CPU; it exited before cwd/source inspection. This did not prove GPU contention. No signals were sent; all required launches were repeated and only fresh quiet-window data are summarized here."
  }
}