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93cd35a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | # 05. 训练与蒸馏
训练只在服务器运行,且必须先完成源码、数据、环境和 teacher checkpoint 校验。所有 recipe 会验证 source commit、processed dataset manifest、全局 batch、学习率、teacher family 和输出 checkpoint。
## Teacher / 多步模型
直接使用已下载官方 checkpoint 的方法无需重新训练。需要 reference reproduction 或 project-owned checkpoint 时,用对应 wrapper:
```bash
bash scripts/train/flm.sh --dataset lm1b --source upstreams/flm \
--output checkpoints/self_trained/lm1b/flm
bash scripts/train/duo.sh --dataset lm1b --source upstreams/duo \
--output checkpoints/self_trained/lm1b/duo
bash scripts/train/mdlm.sh --dataset lm1b --source upstreams/mdlm \
--output checkpoints/self_trained/lm1b/mdlm
bash scripts/train/candi.sh --dataset owt --source upstreams/candi \
--output checkpoints/reference_reproduction/candi/owt
bash scripts/train/rdlm.sh --dataset lm1b --source upstreams/rdlm \
--output checkpoints/self_trained/lm1b/rdlm
```
这些命令默认使用锁定 recipe。FLM 论文配置为 1,000,000 steps、global batch 512、LR `3e-4`、warmup 2,500;官方发布脚本的 1,500,000 steps 只作为 drift evidence,不覆盖论文主配置。CANDI/OWT 是项目 reference recipe,生成前必须确认 `model.ckpt` 和 `config.yaml` 已被 checkpoint lock 记录。
## 少步蒸馏
```bash
bash scripts/distill/fmlm.sh --dataset lm1b --teacher-checkpoint \
checkpoints/official/flm/lm1b/model.safetensors \
--output checkpoints/self_trained/lm1b/fmlm
bash scripts/distill/duo_dcd.sh --dataset lm1b --source upstreams/duo \
--teacher checkpoints/reference_reproduction/flm_baselines/lm1b/lm1b_Duo.ckpt \
--output checkpoints/reference_reproduction/duo_dcd/lm1b
bash scripts/distill/mdlm_sdtt.sh --dataset lm1b --source upstreams/sdtt \
--teacher checkpoints/reference_reproduction/flm_baselines/lm1b/lm1b_MDLM_.ckpt \
--output checkpoints/reference_reproduction/mdlm_sdtt/lm1b
bash scripts/distill/di4c.sh --model duo_di4c --dataset lm1b \
--teacher-family uniform_duo \
--teacher-checkpoint checkpoints/reference_reproduction/flm_baselines/lm1b/lm1b_Duo.ckpt \
--output checkpoints/reference_reproduction/duo_di4c/lm1b \
--student-init teacher \
--upstream-override is_di4c=true
```
DCD/SDTT 使用 8 rounds × 10,000 steps、global batch 128、LR `6e-5`、warmup 2,500。Di4C 的 LM1B/OWT 采样 checkpoint 分别是 20,000/50,000;不能把 Zenodo masked SDTT checkpoint 当作 Duo/Di4C teacher。LM1B Di4C 默认用 `--student-init teacher`,避免公开 OWT/GPT2-vocab student 初始化与 LM1B/BERT vocab 不兼容;`--student-init scratch` 仅用于实验性随机 student 初始化。
## dry-run 与恢复
先在服务器检查命令而不启动训练:
```bash
python -m dlb.recipes --root "$DLB_ROOT" --recipe candi \
--dataset owt --dry-run
```
默认 `--resume`。输出目录中会写 `recipe.json`、`launch_argv.json`、`provenance.json`、`config.yaml`、日志和 `completed.json`。若 checkpoint/config digest 改变,recipe 会拒绝复用旧输出;不要删除 provenance 来强行继续。
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