mopd-iter200

Multi-teacher On-Policy Distillation (OPD) checkpoint of a Qwen3-8B student, exported at iteration 200.

Overview

  • Architecture: Qwen3-8B (dense, 36 layers, hidden 4096, GQA 32Q/8KV, vocab 151936, 32k context)
  • Training: on-policy distillation where a single student rolls out a mixed math + search + tool-use (tau) stream; the only training signal is per-token reverse-KL to a domain-specific teacher (static domain routing, task reward = 0).
  • Init: Qwen3-8B SFT chain (Math -> Sea-SFT -> Search -> Tau-SFT -> IF).
  • Format: converted from a Megatron torch_dist checkpoint to HuggingFace safetensors (bf16).

Usage

```python from transformers import AutoModelForCausalLM, AutoTokenizer import torch

model_id = "willamazon1/mopd-iter200" tok = AutoTokenizer.from_pretrained(model_id) model = AutoModelForCausalLM.from_pretrained(model_id, torch_dtype=torch.bfloat16, device_map="auto")

msgs = [{"role": "user", "content": "What is 12*8?"}] text = tok.apply_chat_template(msgs, add_generation_prompt=True, tokenize=False) ids = tok(text, return_tensors="pt").input_ids.to(model.device) out = model.generate(ids, max_new_tokens=64) print(tok.decode(out[0][ids.shape[1]:], skip_special_tokens=True)) ```

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