Phase 0 (canonical reference):
- scripts/benchmarks/qwen3_grpo_notebook.py: notebook-to-script port of
Qwen3_(4B)-GRPO.ipynb with StatisticsCallback from torch_debugging_utils
and equivalence-friendly sampling (temp=0.1, top_p=0.97, min_p=0.5, top_k=5).
- scripts/benchmarks/results/notebook_ref_10.md: 10-step reference run table
(median step post-warmup = 5.80s, peak 158.9 GB).
- scripts/benchmarks/results/stats/notebook_ref_10.json: full per-step logs
for downstream compare_training_runs checks.
Phase 1 (rollout-only LoRA comparison scaffold):
- scripts/benchmarks/make_lora_adapter.py: one-shot that materializes a
rank-32 LoRA at outputs/lora_rank32_fresh. Re-initializes lora_B with a
tiny gaussian so the adapter isn't a no-op (otherwise LoRA kernels can
short-circuit and we'd be measuring the base model).
- scripts/benchmarks/cb_vs_vllm_generation.py: extended with --lora_adapter
for vLLM (LoRARequest) and tpaged (peft.PeftModel.from_pretrained,
no merge_adapter), plus a new unsloth_fi_false backend that exercises the
custom HF inference path (cached fp16 LoRA via fast_linear_forward).
Sampling knobs are exposed and default to equivalence params.
Phase 2 scaffold:
- scripts/benchmarks/qwen3_grpo_unified.py: single entry point for all 5
backends (vllm, unsloth_fi_false, cb_paged, cb_sdpa, naive_trl) sharing
dataset, reward funcs, sampling, and StatisticsCallback. Skips the first
3 steps when reporting median step wall.
No unsloth internals touched.
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