{
  "schema": "RUN_IDENTITY_V1",
  "run_id": "t30b2507-q4b-think-mix-l0.2-s0.8-v4-tail151643",
  "corrects": "Q4B-THINK Mix Distillation 0.2:0.8 (30B-A3B-Thinking : 4B-Thinking by rows)",
  "notes": "Mix Distillation Mix-Large (Li et al. 2025 arXiv 2502.12143): 30B-A3B-Thinking : 4B-Thinking = 0.2 : 0.8 by row/problem; one teacher trace per problem; dose target 32436894/ep ±1%, actual 1ep 32424225, 2ep 64848450. 30B source=/workspace/code-sft-runs/t30b2507-q4b-tn-v2-lr1e4-e1-20260907/data/THINK_PAIRED_V4_2EP.parquet sha=c160713fea76eae124dbbc3b5c619d3164862da83f61d91d3970ede990a12540 (2EP first half 4715 rows). 4B source=/workspace/code-sft-runs/t30b2507-q4b-tn-v2-lr1e4-e1-20260907/arms/Q4B-THINK-T4BDATA/data/joint-full-t4b_tail151643.parquet sha=d09c4d6272de7e50c9b2df0e401878864f09bda33db05a5833c43575969fa524. V4 recipe unchanged (LoRA r64/α128, lr 1e-4, both-sides B-row [151643,151667,151668], physical 2ep concat, seed 42). PI approved 2026-09-09.",
  "model": {
    "hf_id": "Qwen/Qwen3-4B-Base",
    "revision": "906bfd4b4dc7f14ee4320094d8b41684abff8539",
    "local_path": "/workspace/code-sft-infra/models/qwen3-4b-base",
    "tied_embeddings": true
  },
  "data": {
    "path": "/workspace/code-sft-runs/t30b2507-q4b-tn-v2-lr1e4-e1-20260907/arms/Q4B-THINK-MIX/data/mix_l0.2_s0.8_tail151643_2EP.parquet",
    "rows": 8310,
    "sha256": "6097d7bf8bc18621ed4fbc2c7f4e6a68b65186eb1d25964fd632580f97dabdfd",
    "census": "/workspace/code-sft-runs/t30b2507-q4b-tn-v2-lr1e4-e1-20260907/arms/Q4B-THINK-MIX/data/TOKEN_CENSUS_MIX.json",
    "physical_2ep": "concat(mix, mix) same order; teacher_source 30b/4b; tail 151643",
    "source_1ep_path": "/workspace/code-sft-runs/t30b2507-q4b-tn-v2-lr1e4-e1-20260907/arms/Q4B-THINK-MIX/data/mix_l0.2_s0.8_tail151643.parquet",
    "source_1ep_sha256": "3c5ae286e7e5242df3c011123edaf0727405d3b535e85d77ce6b99afe7c27e77",
    "source_1ep_rows": 4155,
    "teacher_30b_path": "/workspace/code-sft-runs/t30b2507-q4b-tn-v2-lr1e4-e1-20260907/data/THINK_PAIRED_V4_2EP.parquet",
    "teacher_30b_sha256": "c160713fea76eae124dbbc3b5c619d3164862da83f61d91d3970ede990a12540",
    "teacher_4b_path": "/workspace/code-sft-runs/t30b2507-q4b-tn-v2-lr1e4-e1-20260907/arms/Q4B-THINK-T4BDATA/data/joint-full-t4b_tail151643.parquet",
    "teacher_4b_sha256": "d09c4d6272de7e50c9b2df0e401878864f09bda33db05a5833c43575969fa524",
    "mix_ratio_rows": "0.2:0.8",
    "n30": 831,
    "n4": 3324,
    "active_tokens_1ep": 32424225
  },
  "seeds": {
    "train": 42,
    "eval": 3407,
    "mix": 42
  },
  "parameters": {
    "epochs": 2,
    "target_assistant_tokens": 64848450,
    "active_tokens_1ep": 32424225,
    "checkpoint_target_tokens": [
      32445505,
      48759220,
      64848450
    ],
    "milestone_updates": [
      495,
      744,
      990
    ],
    "warmup_target_tokens": 3890907,
    "learning_rate": 0.0001,
    "row_lr": 0.0001,
    "optimizer": "adamw",
    "optimizer_betas": [
      0.9,
      0.95
    ],
    "optimizer_eps": 1e-08,
    "lora_rank": 64,
    "lora_alpha": 128,
    "lora_dropout": 0.0,
    "lora_target_modules": [
      "q_proj",
      "k_proj",
      "v_proj",
      "o_proj",
      "gate_proj",
      "up_proj",
      "down_proj"
    ],
    "lora_weight_decay": 0.1,
    "row_weight_decay": 0.0,
    "max_grad_norm": 1.0,
    "tokens_per_optimizer_update": 65536,
    "packing": false,
    "truncation": false,
    "repeat_examples": false,
    "precision": "bfloat16",
    "trainable_dtype": "float32",
    "gradient_checkpointing": true,
    "eos_weight": 1.0,
    "scheduler": "cosine_by_assistant_target_token_dose",
    "worker_lr_scale": "rstar_dual_worker_v4._lr_scale",
    "supervised_tail": [
      151643
    ],
    "trainable_token_indices": {
      "embed_tokens": [
        151643,
        151667,
        151668
      ],
      "lm_head": [
        151643,
        151667,
        151668
      ]
    },
    "untie_tied_embeddings": true,
    "context": 32768,
    "eval": {
      "suite": "DEV256",
      "seed": 3407,
      "temperature": 0.6,
      "top_p": 0.95,
      "top_k": 20,
      "ctx": 32768,
      "stop_ids": [
        151643,
        151645
      ],
      "base_reeval_same_mode": true
    }
  },
  "code": {
    "path": "/workspace/tools/rstar_dual_worker_v4.py",
    "commit_or_sha256": "5cbdaca65556cbe0cf9e1374cf122c22511b02781eda6fab4ca780a869562cb7",
    "prep": "/workspace/code-sft-runs/t30b2507-q4b-tn-v2-lr1e4-e1-20260907/arms/Q4B-THINK-MIX/scripts/build_mix_distill_payload.py",
    "prep_sha256": "2ff0f61e200d18dd55b1301f9573e923abd6fe87608220f7126cf709d4cb7288"
  },
  "started_at": "2026-09-09T06:13:03Z",
  "endpoint": "2EP_ONLY @64848450 assistant tokens; no checkpoint picking",
  "status": "RUNNING"
}