| --- |
| tags: [agentic-ptb, index] |
| --- |
| |
| # AgentPTB checkpoint index |
|
|
| Every checkpoint produced by the AgentPTB driver × reasoning-effort sweep, one HF repo each. |
| All are `Qwen/Qwen3.5-9B-Base` derivatives in standard safetensors format. |
|
|
| ## Model id format |
|
|
| ``` |
| agentic-ptb/{cell}.h{HHH}.{family}.{step} |
| ``` |
|
|
| **`hHHH` is the hour of that cell's 100-hour run at which the checkpoint was written** — the |
| same x-axis the sweep figures use for eval panels. A checkpoint therefore drops straight onto |
| the performance-over-time curve, and sorting ids within a cell sorts them chronologically. |
| `hNA` means the hour could not be recovered (see `hour_source`). |
|
|
| `{cell}` is the plot key, so results join back to the figures directly. |
|
|
| ## Cells |
|
|
| | cell | driver | effort | checkpoints | |
| |---|---|---|---| |
| | `sol-high` | Codex / gpt-5.6-sol | high | 57 | |
| | `grok` | pi / grok-4.6 | xhigh | 59 | |
| | `dpsk-v4-flash` | pi / DeepSeek v4-flash | thinking | 40 | |
| | `kimi` | kimi-code / kimi-k3 | high | 38 | |
| | `opus-max` | Claude Code / claude-opus-5 | max | 13 | |
| | `sol-max` | Codex / gpt-5.6-sol | max | 13 | |
| | `opus-high-v1` | Claude Code / claude-opus-5 | high | 3 | |
| | `sol-max-opusnode` | Codex / gpt-5.6-sol | max | 9 | |
| | `sol-max-v2` | Codex / gpt-5.6-sol | max | 36 | |
|
|
| `opus-high-v1` is the opus@high cell. A rerun (`opus-high-v2`, run `a-rerun`) was aborted and |
| is **not valid** — it stopped producing checkpoints at ~h12 and submitted the base model's |
| tensors unchanged after all five of its SFT runs regressed. It is deliberately absent here. |
| `sol-max-v2` is the sol@max redo that ran the full 100 h after the original died at ~h16; |
| it submitted an **h7** checkpoint over 75 further hours of its own training. |
| `sol-max-opusnode` is an extra attempt, not one of the 7 plotted cells. |
|
|
| ## Fields |
|
|
| `manifest.json` / `manifest.csv`, one row per repo: |
|
|
| | field | meaning | |
| |---|---| |
| | `model_id` | full HF id | |
| | `cell`, `driver`, `effort` | which run produced it | |
| | `hour` | hours into the 100-hour run — **the plot x-axis** | |
| | `hour_source` | how the hour was determined — see below | |
| | `hour_upper_bound` | for untimed rows: latest known hour in the same family | |
| | `driver_tokens_at_hour` | cumulative driver tokens at that moment — **the cost axis** | |
| | `role` | `SUBMITTED` / `fallback` / `intermediate` | |
| | `eos_ok`, `eos_token_id` | packaging correctness — **read this before comparing** | |
| | `source` | original path in the run, or the msr-spare repo recovered from | |
|
|
| ### hour_source |
| |
| | value | n | meaning | |
| |---|---|---| |
| | `mtime` | 222 | checkpoint dir mtime on the PVC (exact) | |
| | `janitor` | 24 | archive timestamps from the arm's `ckpt-janitor.log` (exact) | |
| | `extrapolated` | 7 | that family's own step→time cadence; validated against independent local anchors to within ~1.4 h | |
| | `unrecoverable` | 15 | local copy pruned, no timing record survives. `hour` is null — use `hour_upper_bound` and step order, or exclude | |
| |
| ## What else is published per cell |
| |
| Every cell has three companion repos beyond its checkpoints: |
| |
| | repo | type | contents | |
| |---|---|---| |
| | `agentic-ptb/{cell}-record` | model | driver trajectory (every turn), harness source, configs, the arm's own evals, RUNLOG, supervisor history | |
| | `agentic-ptb/{cell}-data` | dataset | the training corpus the arm built for itself — downloaded, filtered and mixed | |
| | `agentic-ptb/{cell}.h*` | model | the checkpoints, indexed here | |
| |
| Driver credentials are never included in a record repo. |
| |
| Automated scanners flag credential-shaped strings inside the `-data` corpora. They were |
| checked: they are synthetic fixtures belonging to the training tasks themselves |
| (secret-scanning exercises whose text embeds fake keys). No project credential is present. |
| |
| ## Serving these checkpoints |
| |
| `Qwen/Qwen3.5-9B-Base` is `Qwen3_5ForConditionalGeneration` — a **vision** architecture, and |
| the vision tower is present in every checkpoint here. prime-rl exports only the text-side |
| files, so vLLM fails two different ways unless multimodality is switched off: it first demands |
| a `preprocessor_config.json` that was never exported, and if you supply one it dies inside the |
| vision kernel (`fmax() missing 1 required positional argument`). |
|
|
| Serve text-only, which is what the arms themselves did: |
|
|
| ``` |
| --limit-mm-per-prompt '{"image": 0, "video": 0}' |
| ``` |
|
|
| ## Before you compare two checkpoints |
|
|
| **Check `eos_ok`.** `248046` is `<|im_end|>`, which the Qwen3.5 chat template ends every |
| assistant turn with. A checkpoint missing it does not stop at end-of-turn and overruns the |
| context window, so its score is a **floor, not a measurement**. This is a packaging artifact, |
| not a capability difference, and it is not uniform across cells — grok is 0/59 correct while |
| sol-high is 39/57. Comparing across that boundary measures packaging. |
| |
| ## The baseline row |
| |
| `Qwen/Qwen3.5-9B-Base` is in the manifest as `cell = BASELINE`, `hour = 0`, |
| `driver_tokens_at_hour = 0` — the untrained model every cell started from, measured under the |
| **same stock pi harness** as everything else on both suites. It is the `baseline_score` in the |
| cost formula below; without it a "gain" has no zero point. |
| |
| It is well packaged: `eos_token_id = [248044, 248046]` (correct) and its chat template lives |
| inside `tokenizer_config.json` rather than a separate `chat_template.jinja`, so it needs no |
| eos-fixed variant. |
| |
| ## Cost per point of gain |
| |
| ```python |
| cost_per_point = row["driver_tokens_at_hour"] / (score - baseline_score) |
| ``` |
| |
| Both axes come from this manifest. Restrict to `eos_ok` rows, or the packaging artifact will |
| read as poor cost-efficiency. |
| |
