---
pretty_name: EVAL_GRPO20
language:
- en
tags:
- evaluation
- aider
- cpp
- fixed26
---

# EVAL_GRPO20

This dataset contains the evaluation evidence for the Sept. 1 GRPO20
`iter_0000019` checkpoint. It intentionally excludes training artifacts,
checkpoint weights, training data, W&B metadata, and comparison runs.

## Results

| Result | Pass@1 | Multi turn with feedback (turn=2) | Trials | Samples |
| --- | ---: | ---: | ---: | ---: |
| Sept. 1 GRPO20, iter 19 | 10/26 mean | 14/26 mean | 4 | 104 |

| Pass@1 SD, range, 95% CI (out of 26) | Turn-2 SD, range, 95% CI (out of 26) | Conditional turn-2 recovery |
| --- | --- | ---: |
| 1.83; 8-12; 6.25-13.75 | 1.15; 13-15; 9.75-18.25 | 16/64 (25.0%; CI 13.2-40.4%) |

## Trials

| Trial | Evaluation run ID | Pass@1 | Turn 2 | Status |
| --- | --- | ---: | ---: | --- |
| 1 | `generalized-cpp-sept1-iter19-fixed26-20260902T103608Z-t04` | 11/26 | 15/26 | complete |
| 2 | `generalized-cpp-sept1-iter19-fixed26-20260902T103608Z-t01` | 12/26 | 13/26 | complete |
| 3 | `generalized-cpp-sept1-iter19-fixed26-20260902T103608Z-t02` | 8/26 | 15/26 | complete |
| 4 | `generalized-cpp-sept1-iter19-fixed26-20260902T103608Z-t03` | 9/26 | 13/26 | complete |

All four evaluations ran sequentially on one GCP Spot
`a3-highgpu-8g` host with 8×H100 80 GB GPUs. Each job completed and synced its
evidence before the next trial began. The host was terminated after the fourth
sync.

## Evaluation identity and integrity

- Contract: `fixed26-contract-v2`
- Evaluated checkpoint: `iter_0000019`
- Adapter SHA-256: `0c0da7a1c3553dfda66af622c8eb5002f3d7418321cfda261414ef020353240c`
- Serving adapter SHA-256: `6a7b3247245ab652fca0dbf4e628de05e5e636c17770fcb34f5f3ffb9961d4d5`
- Evaluation-driver SHA-256: `39044988bb9a73ff62aee78fbfa1051c8c5a3b165dcb02c0b2d4c162d9f015c4`
- Aider commit: `5dc9490bb35f9729ef2c95d00a19ccd30c26339c`
- Polyglot commit: `7e0611e77b54e2dea774cdc0aa00cf9f7ed6144f`
- Runtime image: `us-central1-docker.pkg.dev/lifeandhalf-24122025/w8-biayn/glm47-full-v5-unadmitted-grpo@sha256:5df1c41efb6062a292ac68a49d68ad955d9f8209c182d3fc2f7e8c634ca076a2`

Every selected receipt has `status=complete`, `terminal_tasks=26`,
`unique_testcases=26`, `well_formed_tasks=26`, `tries=2`, and verified LoRA
activation on both serving shards.

Confidence intervals use 100,000 deterministic task-clustered percentile
bootstrap replicates with seed `20260805`. Each replicate resamples the 26 task
IDs and retains all four outcomes for each sampled task. The 104 task-trial
records are not treated as independent Bernoulli observations.

These are assisted regression evaluations, not a pristine held-out benchmark
claim.

## Contents

- `evaluations/<run-id>/run_receipt.json`: aggregate receipt and per-task outcomes
- `evaluations/<run-id>/receipts/`: shard and task-level evidence
- `evaluations/<run-id>/shards/`: exact evaluated Fixed26 task trees
- `evaluations/<run-id>/*.log`: benchmark and serving logs
- `evaluations/<run-id>/audit.md` and `audit.json`: receipt audit
- `statistics.json` and `statistics.md`: cohort statistics
- `per_task_success.csv`: per-task frequencies across the four trials
- `compute_statistics.py`: deterministic recomputation
- `EVAL_MANIFEST.json` and `SHA256SUMS`: release inventory and checksums

No API keys, tokens, W&B data, training artifacts, model weights, or generated
virtual environments are included.