| --- |
| pretty_name: tiny-llm training logs |
| license: mit |
| tags: |
| - language-model |
| - pretraining |
| - learning-rate-schedule |
| - decentralized-training |
| - training-logs |
| size_categories: |
| - 1K<n<10K |
| --- |
| |
| # tiny-llm retained training evidence |
|
|
| 1782 seed/horizon records across 594 configurations: cosine-to-zero and WSD |
| schedules, synchronous and four- and eight-worker decentralized training, at 20 to 160 |
| global tokens per parameter, for 20.4M-parameter models on C4. Snapshot 2026-09-17. |
|
|
| This mirrors `doc/data/current-training/` in |
| [WangZesen/tiny-llm](https://github.com/WangZesen/tiny-llm). The website built from it is |
| at <https://wangzesen.github.io/tiny-llm/>. |
|
|
| ## Layout |
|
|
| Retained artifacts are grouped into gzipped JSONL containers, one line per artifact: |
|
|
| ```json |
| {"path":"logs/cosine/sync/h20/lr-0.01-b1-0.9-b2-0.99/s42/metrics.jsonl", |
| "bytes":71410,"sha256":"...","text":"<the artifact verbatim>"} |
| ``` |
|
|
| `sources.json` is the index: it maps every artifact to its container and records the |
| digest of the original file. Metrics containers concatenate one gzip member per line, so |
| `offset` and `compressedBytes` address a single run's log directly; every other container |
| is a single stream. Placement is a pure rule, so a misfiled container is detectable. |
|
|
| ## What is retained, and what is not |
|
|
| 9836 artifacts are byte-identical to the files written |
| during training. The 1296 `metrics.jsonl` logs had two |
| members deleted from every train event: `local_grad_norms`, `local_losses`. |
| These are per-worker diagnostics for the packed models; no published figure, table or |
| curve reads them, and they were 37% of the logged bytes. |
|
|
| The transform is a deletion, not a re-serialization: no other byte of any line, and no |
| line, was changed, added or reordered. `sources.json.sha256` remains the digest of the |
| original file and can no longer be recomputed from this copy for those logs — but for the |
| cosine runs it stays independently attested by the retained `receipt.json`, which records |
| the trainer's own hash of `metrics.jsonl` and is checked on every verification run. The |
| complete pre-repack bundle, with the arrays intact, is this repo at revision |
| `per-file-original`. |
|
|
| ## Verify and regenerate |
|
|
| ```bash |
| uv run python scripts/export_publication.py --check --bundle hf://zesen-kth/tiny-llm |
| ``` |
|
|
| No GPU, campaign directory or checkpoint is needed. Verification checks every retained |
| byte against `sources.json` and every derived file against `checksums.json`. |
|
|
