Qwen3-8B SWE-Gym Distill + KL-GRPO LoRA

This repository contains the best held-out LoRA adapter checkpoint from the Qwen3-8B SWE-Gym patch-generation run:

/mnt/disks/unslothai/datta0/cache/qwen3-grpo-patch/20260604_052201_swegym_q3-8b-distill_8ce2ceb/checkpoints/best_holdout

Base model: unsloth/Qwen3-8B.

Training path:

  1. Distill-SFT on Coder-30B passing patches under the same anchored context used by the student.
  2. KL-regularized GRPO continuation.
  3. Best checkpoint selected by held-out greedy reward.

Measured held-out result from runs/passk_q3_8b_distill_passk/summary.json:

split greedy pass@1 pass@8
overall 6/35 8/35
single-file 6/18 8/18
multi-file 0/17 0/17

Best checkpoint selection:

field value
best step 75
held-out greedy 6/35
held-out reward 0.3806

Interpretation: the anchored teacher distill path was non-harmful and improved measured pass@8 by one over the robust Qwen3-8B KL-GRPO baseline (7/35 -> 8/35). The extra pass@8 coverage is single-file tail coverage, not multi-file transfer. Treat 8/35 as measured but not seed-checked.

This is a PEFT LoRA adapter, not a standalone full-precision base model.

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Framework versions

  • PEFT 0.19.1
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