{
  "layer": 24,
  "target": "reference",
  "recipe": "full_corpus_sequence_pass_v1",
  "batch_tokens": 262144,
  "sequence_order_sha256": "edebb22a5f7b34a6cbfa59c58aab9f111651d6ce0926212b5237dea3ef0ba485",
  "training_sequence_count": 17580,
  "training_passes": 1,
  "refinement": null,
  "lr_decay_after": 45,
  "lr_decay_factor": 0.25,
  "export_only": false,
  "training_output_export": "fixed validation/audit outputs only; full training trajectory export not performed",
  "codebook_lr": 0.048,
  "scale_lr": 0.032,
  "quantized_movement": {
    "codebook_changed": 0,
    "codebook_values": 1187840,
    "scales_changed": 21925779,
    "scale_values": 42762240
  },
  "initial_validation": {
    "target_rel": 0.03018070131383426,
    "reference_rel": 0.03018070131383426,
    "windows": [
      {
        "first_row": 0,
        "rows": 1024,
        "reference_sse": 450.3004150390625,
        "reference_energy": 563531.25
      },
      {
        "first_row": 1024,
        "rows": 1024,
        "reference_sse": 594.5325927734375,
        "reference_energy": 561642.25
      },
      {
        "first_row": 4096,
        "rows": 1024,
        "reference_sse": 922.370361328125,
        "reference_energy": 1125233.5
      },
      {
        "first_row": 5120,
        "rows": 1024,
        "reference_sse": 542.9873046875,
        "reference_energy": 557034.625
      },
      {
        "first_row": 8192,
        "rows": 1024,
        "reference_sse": 601.1998291015625,
        "reference_energy": 536050.625
      },
      {
        "first_row": 9216,
        "rows": 1024,
        "reference_sse": 1083.72607421875,
        "reference_energy": 1700031.375
      },
      {
        "first_row": 12288,
        "rows": 1024,
        "reference_sse": 499.10589599609375,
        "reference_energy": 519301.3125
      },
      {
        "first_row": 13312,
        "rows": 1024,
        "reference_sse": 393.5712890625,
        "reference_energy": 560700.0
      },
      {
        "first_row": 16384,
        "rows": 1024,
        "reference_sse": 441.8387756347656,
        "reference_energy": 561218.375
      },
      {
        "first_row": 17408,
        "rows": 1024,
        "reference_sse": 723.172607421875,
        "reference_energy": 568872.125
      },
      {
        "first_row": 20480,
        "rows": 1024,
        "reference_sse": 431.9334716796875,
        "reference_energy": 567083.0
      },
      {
        "first_row": 21504,
        "rows": 1024,
        "reference_sse": 1115.7115478515625,
        "reference_energy": 1138222.875
      },
      {
        "first_row": 24576,
        "rows": 1024,
        "reference_sse": 505.62261962890625,
        "reference_energy": 574013.75
      },
      {
        "first_row": 25600,
        "rows": 1024,
        "reference_sse": 504.1761779785156,
        "reference_energy": 567713.25
      },
      {
        "first_row": 28672,
        "rows": 1024,
        "reference_sse": 887.72607421875,
        "reference_energy": 534715.875
      },
      {
        "first_row": 29696,
        "rows": 1024,
        "reference_sse": 512.806884765625,
        "reference_energy": 574499.875
      }
    ]
  },
  "final_validation": {
    "target_rel": 0.030158258566731176,
    "reference_rel": 0.030158258566731176,
    "windows": [
      {
        "first_row": 0,
        "rows": 1024,
        "reference_sse": 450.01104736328125,
        "reference_energy": 563531.25
      },
      {
        "first_row": 1024,
        "rows": 1024,
        "reference_sse": 593.697998046875,
        "reference_energy": 561642.25
      },
      {
        "first_row": 4096,
        "rows": 1024,
        "reference_sse": 921.4935302734375,
        "reference_energy": 1125233.5
      },
      {
        "first_row": 5120,
        "rows": 1024,
        "reference_sse": 542.059814453125,
        "reference_energy": 557034.625
      },
      {
        "first_row": 8192,
        "rows": 1024,
        "reference_sse": 600.2554321289062,
        "reference_energy": 536050.625
      },
      {
        "first_row": 9216,
        "rows": 1024,
        "reference_sse": 1079.557861328125,
        "reference_energy": 1700031.375
      },
      {
        "first_row": 12288,
        "rows": 1024,
        "reference_sse": 498.54541015625,
        "reference_energy": 519301.3125
      },
      {
        "first_row": 13312,
        "rows": 1024,
        "reference_sse": 393.2210388183594,
        "reference_energy": 560700.0
      },
      {
        "first_row": 16384,
        "rows": 1024,
        "reference_sse": 441.29254150390625,
        "reference_energy": 561218.375
      },
      {
        "first_row": 17408,
        "rows": 1024,
        "reference_sse": 721.956298828125,
        "reference_energy": 568872.125
      },
      {
        "first_row": 20480,
        "rows": 1024,
        "reference_sse": 431.6265563964844,
        "reference_energy": 567083.0
      },
      {
        "first_row": 21504,
        "rows": 1024,
        "reference_sse": 1113.58984375,
        "reference_energy": 1138222.875
      },
      {
        "first_row": 24576,
        "rows": 1024,
        "reference_sse": 505.1883239746094,
        "reference_energy": 574013.75
      },
      {
        "first_row": 25600,
        "rows": 1024,
        "reference_sse": 503.7032470703125,
        "reference_energy": 567713.25
      },
      {
        "first_row": 28672,
        "rows": 1024,
        "reference_sse": 887.217529296875,
        "reference_energy": 534715.875
      },
      {
        "first_row": 29696,
        "rows": 1024,
        "reference_sse": 512.1853637695312,
        "reference_energy": 574499.875
      }
    ]
  },
  "serialized_validation": {
    "target_rel": 0.030158258566731176,
    "reference_rel": 0.030158258566731176
  },
  "development_audit": {
    "target_rel": 0.027647164830347667,
    "reference_rel": 0.027647164830347667,
    "windows": [
      {
        "first_row": 2048,
        "rows": 1024,
        "reference_sse": 578.1846313476562,
        "reference_energy": 545131.625
      },
      {
        "first_row": 3072,
        "rows": 1024,
        "reference_sse": 532.9863891601562,
        "reference_energy": 569101.875
      },
      {
        "first_row": 6144,
        "rows": 1024,
        "reference_sse": 511.6905517578125,
        "reference_energy": 555751.375
      },
      {
        "first_row": 7168,
        "rows": 1024,
        "reference_sse": 807.1260986328125,
        "reference_energy": 1714099.25
      },
      {
        "first_row": 10240,
        "rows": 1024,
        "reference_sse": 724.7220458984375,
        "reference_energy": 1120447.5
      },
      {
        "first_row": 11264,
        "rows": 1024,
        "reference_sse": 639.1360473632812,
        "reference_energy": 566138.125
      },
      {
        "first_row": 14336,
        "rows": 1024,
        "reference_sse": 585.853271484375,
        "reference_energy": 1133296.25
      },
      {
        "first_row": 15360,
        "rows": 1024,
        "reference_sse": 417.126953125,
        "reference_energy": 570597.5
      },
      {
        "first_row": 18432,
        "rows": 1024,
        "reference_sse": 557.397216796875,
        "reference_energy": 530403.625
      },
      {
        "first_row": 19456,
        "rows": 1024,
        "reference_sse": 601.7383422851562,
        "reference_energy": 578257.0625
      },
      {
        "first_row": 22528,
        "rows": 1024,
        "reference_sse": 547.8421630859375,
        "reference_energy": 554230.5
      },
      {
        "first_row": 23552,
        "rows": 1024,
        "reference_sse": 463.7409362792969,
        "reference_energy": 564676.1875
      },
      {
        "first_row": 26624,
        "rows": 1024,
        "reference_sse": 453.1725158691406,
        "reference_energy": 549056.9375
      },
      {
        "first_row": 27648,
        "rows": 1024,
        "reference_sse": 612.9688110351562,
        "reference_energy": 1137116.25
      },
      {
        "first_row": 30720,
        "rows": 1024,
        "reference_sse": 512.057373046875,
        "reference_energy": 539316.125
      },
      {
        "first_row": 31744,
        "rows": 1024,
        "reference_sse": 472.96783447265625,
        "reference_energy": 571327.5
      }
    ]
  },
  "initial_development_audit": {
    "target_rel": 0.02767054830140836,
    "reference_rel": 0.02767054830140836,
    "windows": [
      {
        "first_row": 2048,
        "rows": 1024,
        "reference_sse": 579.2672119140625,
        "reference_energy": 545131.625
      },
      {
        "first_row": 3072,
        "rows": 1024,
        "reference_sse": 534.0862426757812,
        "reference_energy": 569101.875
      },
      {
        "first_row": 6144,
        "rows": 1024,
        "reference_sse": 512.6669921875,
        "reference_energy": 555751.375
      },
      {
        "first_row": 7168,
        "rows": 1024,
        "reference_sse": 808.952880859375,
        "reference_energy": 1714099.25
      },
      {
        "first_row": 10240,
        "rows": 1024,
        "reference_sse": 725.7714233398438,
        "reference_energy": 1120447.5
      },
      {
        "first_row": 11264,
        "rows": 1024,
        "reference_sse": 641.5465087890625,
        "reference_energy": 566138.125
      },
      {
        "first_row": 14336,
        "rows": 1024,
        "reference_sse": 587.0452880859375,
        "reference_energy": 1133296.25
      },
      {
        "first_row": 15360,
        "rows": 1024,
        "reference_sse": 417.67633056640625,
        "reference_energy": 570597.5
      },
      {
        "first_row": 18432,
        "rows": 1024,
        "reference_sse": 557.5767211914062,
        "reference_energy": 530403.625
      },
      {
        "first_row": 19456,
        "rows": 1024,
        "reference_sse": 602.01123046875,
        "reference_energy": 578257.0625
      },
      {
        "first_row": 22528,
        "rows": 1024,
        "reference_sse": 548.8507690429688,
        "reference_energy": 554230.5
      },
      {
        "first_row": 23552,
        "rows": 1024,
        "reference_sse": 464.78753662109375,
        "reference_energy": 564676.1875
      },
      {
        "first_row": 26624,
        "rows": 1024,
        "reference_sse": 453.28515625,
        "reference_energy": 549056.9375
      },
      {
        "first_row": 27648,
        "rows": 1024,
        "reference_sse": 613.8060302734375,
        "reference_energy": 1137116.25
      },
      {
        "first_row": 30720,
        "rows": 1024,
        "reference_sse": 512.9866943359375,
        "reference_energy": 539316.125
      },
      {
        "first_row": 31744,
        "rows": 1024,
        "reference_sse": 473.6563415527344,
        "reference_energy": 571327.5
      }
    ]
  },
  "best_step": 5,
  "steps_run": 69,
  "history": [
    {
      "step": 5,
      "validation": {
        "target_rel": 0.030158258566731176,
        "reference_rel": 0.030158258566731176
      },
      "training_probe_rel": 0.9138644813428671,
      "batch_loss": 0.8043025434017181,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 46.88190507888794,
      "quantized_movement": {
        "codebook_changed": 0,
        "codebook_values": 1187840,
        "scales_changed": 21925779,
        "scale_values": 42762240
      }
    },
    {
      "step": 10,
      "validation": {
        "target_rel": 0.03023963739838703,
        "reference_rel": 0.03023963739838703
      },
      "training_probe_rel": 0.9123139501605702,
      "batch_loss": 0.7723357081413269,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 91.0893759727478,
      "quantized_movement": {
        "codebook_changed": 57411,
        "codebook_values": 1187840,
        "scales_changed": 28475018,
        "scale_values": 42762240
      }
    },
    {
      "step": 15,
      "validation": {
        "target_rel": 0.03020637895236609,
        "reference_rel": 0.03020637895236609
      },
      "training_probe_rel": 0.9079347075584104,
      "batch_loss": 0.8137887567281723,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 139.0504024028778,
      "quantized_movement": {
        "codebook_changed": 22523,
        "codebook_values": 1187840,
        "scales_changed": 31039188,
        "scale_values": 42762240
      }
    },
    {
      "step": 20,
      "validation": {
        "target_rel": 0.030210442964955647,
        "reference_rel": 0.030210442964955647
      },
      "training_probe_rel": 0.9057199354363328,
      "batch_loss": 0.8178923279047012,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 200.3402237892151,
      "quantized_movement": {
        "codebook_changed": 18303,
        "codebook_values": 1187840,
        "scales_changed": 32532586,
        "scale_values": 42762240
      }
    },
    {
      "step": 25,
      "validation": {
        "target_rel": 0.03021249722566402,
        "reference_rel": 0.03021249722566402
      },
      "training_probe_rel": 0.9047083208124811,
      "batch_loss": 0.8121031224727631,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 246.05291604995728,
      "quantized_movement": {
        "codebook_changed": 17517,
        "codebook_values": 1187840,
        "scales_changed": 33459183,
        "scale_values": 42762240
      }
    },
    {
      "step": 30,
      "validation": {
        "target_rel": 0.030219606536998463,
        "reference_rel": 0.030219606536998463
      },
      "training_probe_rel": 0.9041102429568784,
      "batch_loss": 0.7963638454675674,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 300.4645085334778,
      "quantized_movement": {
        "codebook_changed": 17375,
        "codebook_values": 1187840,
        "scales_changed": 34092906,
        "scale_values": 42762240
      }
    },
    {
      "step": 35,
      "validation": {
        "target_rel": 0.0302218575408398,
        "reference_rel": 0.0302218575408398
      },
      "training_probe_rel": 0.9034387354975693,
      "batch_loss": 0.7660077214241028,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 347.53945565223694,
      "quantized_movement": {
        "codebook_changed": 15927,
        "codebook_values": 1187840,
        "scales_changed": 34562460,
        "scale_values": 42762240
      }
    },
    {
      "step": 40,
      "validation": {
        "target_rel": 0.03022220488747357,
        "reference_rel": 0.03022220488747357
      },
      "training_probe_rel": 0.9026837417987907,
      "batch_loss": 0.7586035132408142,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 410.05751872062683,
      "quantized_movement": {
        "codebook_changed": 15280,
        "codebook_values": 1187840,
        "scales_changed": 34936301,
        "scale_values": 42762240
      }
    },
    {
      "step": 45,
      "validation": {
        "target_rel": 0.030222717162425212,
        "reference_rel": 0.030222717162425212
      },
      "training_probe_rel": 0.9025112192865485,
      "batch_loss": 0.7733148634433746,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 455.66184067726135,
      "quantized_movement": {
        "codebook_changed": 14736,
        "codebook_values": 1187840,
        "scales_changed": 35231324,
        "scale_values": 42762240
      }
    },
    {
      "step": 50,
      "validation": {
        "target_rel": 0.030210608413942994,
        "reference_rel": 0.030210608413942994
      },
      "training_probe_rel": 0.9016472595139594,
      "batch_loss": 0.786723181605339,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 505.11398434638977,
      "quantized_movement": {
        "codebook_changed": 6715,
        "codebook_values": 1187840,
        "scales_changed": 35290594,
        "scale_values": 42762240
      }
    },
    {
      "step": 55,
      "validation": {
        "target_rel": 0.03021182221949185,
        "reference_rel": 0.03021182221949185
      },
      "training_probe_rel": 0.9016574185349,
      "batch_loss": 0.7979924380779266,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 551.4612936973572,
      "quantized_movement": {
        "codebook_changed": 8477,
        "codebook_values": 1187840,
        "scales_changed": 35338102,
        "scale_values": 42762240
      }
    },
    {
      "step": 60,
      "validation": {
        "target_rel": 0.03021178901395322,
        "reference_rel": 0.03021178901395322
      },
      "training_probe_rel": 0.9017543203744955,
      "batch_loss": 0.7520456165075302,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 608.7220456600189,
      "quantized_movement": {
        "codebook_changed": 9573,
        "codebook_values": 1187840,
        "scales_changed": 35380044,
        "scale_values": 42762240
      }
    },
    {
      "step": 65,
      "validation": {
        "target_rel": 0.03021192688202948,
        "reference_rel": 0.03021192688202948
      },
      "training_probe_rel": 0.9016388481949483,
      "batch_loss": 0.7722304165363312,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 660.7106537818909,
      "quantized_movement": {
        "codebook_changed": 9429,
        "codebook_values": 1187840,
        "scales_changed": 35414409,
        "scale_values": 42762240
      }
    },
    {
      "step": 69,
      "validation": {
        "target_rel": 0.030213516824934866,
        "reference_rel": 0.030213516824934866
      },
      "training_probe_rel": 0.9016076855768295,
      "batch_loss": 0.797200471162796,
      "best_step": 5,
      "overfit_checks": 0,
      "seconds": 700.1213462352753,
      "quantized_movement": {
        "codebook_changed": 9706,
        "codebook_values": 1187840,
        "scales_changed": 35444985,
        "scale_values": 42762240
      }
    }
  ],
  "index_reassignments": [
    {
      "method": "expert_parallel_output_gradient_prefix_backtracking_v1",
      "proposals": 288,
      "accepted": 260,
      "changed_groups": 107877,
      "training_before": 9451.625,
      "training_after": 9420.640625,
      "acceptance": "proposal and separate training check batches",
      "step": 20
    },
    {
      "method": "expert_parallel_output_gradient_prefix_backtracking_v1",
      "proposals": 283,
      "accepted": 249,
      "changed_groups": 95119,
      "training_before": 9233.873046875,
      "training_after": 9206.25390625,
      "acceptance": "proposal and separate training check batches",
      "step": 40
    },
    {
      "method": "expert_parallel_output_gradient_prefix_backtracking_v1",
      "proposals": 286,
      "accepted": 253,
      "changed_groups": 97897,
      "training_before": 9516.775390625,
      "training_after": 9484.6201171875,
      "acceptance": "proposal and separate training check batches",
      "step": 60
    }
  ],
  "coverage_threshold": 256,
  "checkpoint_selection": "held-out original reference trajectory for both arms",
  "world_size": 8,
  "microbatch": 65536,
  "proposal_communication": "sparse routed rows",
  "parallelism": "expert-sharded coupled output",
  "arithmetic": "fp4_planes4_fp16_boundaries_v1",
  "scope": "text-only, cached prompt partitions; historical audit is development only",
  "train_rows": 18001846,
  "validation_rows": 16384,
  "audit_rows": 16384,
  "complete": true
}