{
  "request": {
    "program": "#! title Three workers, three jobs, deterministic: this fails\n#! about The 3×3 assignment at temperature 0. Every cell starts at 0 and takes the sign of its field: all -, then all +, then all - again. It never comes to rest. Constraint problems need the temperature, in this version as in the first.\n#! expect fails\n#! item cell\n#! plus chosen\n#! minus not chosen\n#! check exactly 1 0-1-2 3-4-5 6-7-8 0-3-6 1-4-7 2-5-8\n#\n# Variable 3·r + c is the cell of row r and column c: + chosen, - not.\nvars 9\nexactly 1 0 1 2\nexactly 1 3 4 5\nexactly 1 6 7 8\nexactly 1 0 3 6\nexactly 1 1 4 7\nexactly 1 2 5 8\nminimize\n",
    "protocol": "wai.quantum.landscape/2"
  },
  "result": {
    "protocol": "wai.quantum.landscape/2",
    "label": "A classical emulator of the settling model of a planned energy-based processor, running on your machine. Energies are computed exactly. The joule line prices a run at temperature 0 at the settle rate measured on an FPGA board running this project's open reference design, with a published figure for one integer add beside it for scale, and leaves a run above temperature 0 unpriced, saying why. No photonic hardware, custom chip or quantum effect is involved in this run.",
    "member": {
      "id": "fpga:board-1",
      "class": "fpga",
      "kernel": "wai.quantum.landscape2/settle",
      "parity": "uncertified"
    },
    "program_digest": "e80891aeee8452db60b0dee8238a79866d1489efff8690dedfe57531c5c1f20a",
    "title": "Three workers, three jobs, deterministic: this fails",
    "about": "The 3×3 assignment at temperature 0. Every cell starts at 0 and takes the sign of its field: all -, then all +, then all - again. It never comes to rest. Constraint problems need the temperature, in this version as in the first.",
    "item": "cell",
    "expect": "fails",
    "variables": 9,
    "pairs": 18,
    "seed": "1",
    "mode": "settle",
    "mode_words": "Deterministic (temperature 0): every variable starts at 0, then settles, for at most 60 sweeps.",
    "temperature": 0.0,
    "temperature_from": null,
    "restarts": 1,
    "sweeps": 60,
    "state": "---------",
    "groups": [
      {
        "name": "chosen",
        "items": []
      },
      {
        "name": "not chosen",
        "items": [
          0,
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8
        ]
      }
    ],
    "energy": -9,
    "truth": {
      "arrangements": 19683,
      "lowest": -21.0,
      "at_lowest": 6,
      "at_lowest_passing": 6,
      "example": "--+-+-+--"
    },
    "reached": false,
    "declared": null,
    "warnings": [],
    "checks": [
      {
        "kind": "exactly",
        "passed": false,
        "detail": "6 of 6 groups do not hold exactly 1 + with their other variables −."
      }
    ],
    "verdict": "failed",
    "summary": "It never came to rest: the deterministic mode kept flipping between two states, so this answer means nothing. Try a temperature above 0. 6 of 6 groups do not hold exactly 1 + with their other variables −.",
    "work": {
      "sweeps": 3,
      "accumulates": 108,
      "cell_updates": 27,
      "draws": 0,
      "ended": "kept flipping between two states",
      "rests": false
    },
    "joules": {
      "kind": "priced",
      "class": "ModelBased",
      "describes": "the work on one FPGA board running this project's open reference design, not the machine that ran this job",
      "line": "Priced, not read from a meter: 108 accumulates × about 0.88 pJ = about 95 pJ.",
      "rate_pj_per_accumulate": 0.88,
      "rate_source": "Settle rate: measured on one FPGA board running this project's open reference design (wai/wai-quantum-landscape-fpga, its measurements of 2026-11-06): 162.0 mW of power, run minus halt on one bitstream, for a dense 64-cell settle repeated 12.5 million times a second, 1.831e11 accumulates a second at 100 MHz, its prediction committed first. One board and one whole-board sensor; one of the two null controls of that campaign failed at about 8 mW, which this reading is twenty times. No other board has repeated it.",
      "evidence": [
        "wai/wai-quantum-landscape-fpga/README.md (What it measured: Power)",
        "wai/wai-quantum-landscape-fpga/measurements/2026-11-06/emio-classes/t0-recall.dat",
        "wai/wai-quantum-landscape-fpga/measurements/2026-11-06/emio-checks/throughput-emio.txt"
      ],
      "pj": 95.04,
      "published_add": {
        "class": "Estimator",
        "rate_pj_per_accumulate": 0.03,
        "source": "a published 2014 figure for the energy of one 8-bit integer add in 45 nm logic",
        "pj": 3.2399999999999998,
        "line": "For scale: a published 2014 figure for one 8-bit integer add, about 0.03 pJ, puts this count at about 3.2 pJ. It is a reference point, not a model of any processor."
      },
      "left_out": {
        "board_watts": 3.14,
        "board_hz": 100000000.0,
        "clocks_at_least": 3,
        "pj": 94200.00000000001,
        "line": "Small jobs price low. This rate counts only the work: that board also draws about 3.1 W halted, at every clock. This run's 3 sweeps need at least 3 clocks, which is about 94 nJ of board power that the line above leaves out."
      },
      "why": null,
      "metered": null
    },
    "state_hash": "e604823a249029bf",
    "replay": "655f874220d4836c6f8c4d2ab3187489f084f5b18d450b923e44f2614e675ce8",
    "engine": {
      "name": "wai-quantum",
      "version": "0.9.0"
    },
    "schema": "wai.quantum.landscape/2",
    "receipt": {
      "alg": "ed25519",
      "canon": "rfc8785",
      "key": "197f6b23e16c8532c6abc838facd5ea789be0c76b2920334039bfa8b3d368d61",
      "digest": "2253c6189f438ae2a27a42ae149cee4c8387d0486c88ea959a45d9d6a43f3d85",
      "signature": "20a8320b24bd2cb9fd8c75de5e1d59404c5f1473d8ab04d847d6277c1b7bba820f2406ef361581c1e9f0999122cda00c8f8cd7e7c03118abab114084dd92cd04"
    }
  }
}