Instructions to use summerAIO/Looped-qwen-pre2 with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use summerAIO/Looped-qwen-pre2 with Transformers:

# Use a pipeline as a high-level helper
from transformers import pipeline

pipe = pipeline("text-generation", model="summerAIO/Looped-qwen-pre2", trust_remote_code=True)
messages = [
    {"role": "user", "content": "Who are you?"},
]
pipe(messages)

# pip install -U transformers accelerate
# Load model directly
from transformers import AutoModelForCausalLM
model = AutoModelForCausalLM.from_pretrained("summerAIO/Looped-qwen-pre2", trust_remote_code=True, device_map="auto")

Notebooks
Google Colab
Kaggle
Local Apps Settings

vLLM

How to use summerAIO/Looped-qwen-pre2 with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "summerAIO/Looped-qwen-pre2"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "summerAIO/Looped-qwen-pre2",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/summerAIO/Looped-qwen-pre2

SGLang

How to use summerAIO/Looped-qwen-pre2 with SGLang:

Install from pip and serve model

# Install SGLang from pip:
pip install sglang
# Start the SGLang server:
python3 -m sglang.launch_server \
    --model-path "summerAIO/Looped-qwen-pre2" \
    --host 0.0.0.0 \
    --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "summerAIO/Looped-qwen-pre2",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker images

docker run --gpus all \
    --shm-size 32g \
    -p 30000:30000 \
    -v ~/.cache/huggingface:/root/.cache/huggingface \
    --env "HF_TOKEN=<secret>" \
    --ipc=host \
    lmsysorg/sglang:latest \
    python3 -m sglang.launch_server \
        --model-path "summerAIO/Looped-qwen-pre2" \
        --host 0.0.0.0 \
        --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "summerAIO/Looped-qwen-pre2",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Docker Model Runner
How to use summerAIO/Looped-qwen-pre2 with Docker Model Runner:
```
docker model run hf.co/summerAIO/Looped-qwen-pre2
```

summerMC/Looped-Qwen-pre2

j-llm/Qwen3.5-2B-SpeedX2 (全層 Gated DeltaNet) の 24 層を 空間マージして重み共有し、2 重ループにした Looped GDN (反復ステップ毎 LoRA 付き)。教師 Qwen/Qwen3.5-2B から蒸留。

for t in range(6):            # 外側ループ
    h = RoPE注入(h)             # 位置の再注入 + ループ段埋め込み
    for k in range(loops[t]):   # 内側ループ (ゲート付き)  loops = [4, 4, 4, 4, 4, 4]
        h = h + g_k(h) * (GDN_t(h) - h)   # GDN_t = 元の 4 層を平均マージした共有ブロック

使い方 (transformers)

import torch
from transformers import AutoModelForCausalLM, AutoTokenizer
repo = "summerMC/Looped-Qwen-pre"
tok = AutoTokenizer.from_pretrained(repo)
model = AutoModelForCausalLM.from_pretrained(repo, trust_remote_code=True, dtype=torch.bfloat16).cuda().eval()
ids = tok.apply_chat_template([{"role": "user", "content": "日本の首都はどこ？"}], add_generation_prompt=True,
                              return_tensors="pt", return_dict=True, enable_thinking=False)["input_ids"].cuda()
out = model.generate(ids, max_new_tokens=128, do_sample=True, temperature=0.7, top_p=0.9, repetition_penalty=1.1)
print(tok.decode(out[0, ids.shape[1]:], skip_special_tokens=True))

pip install -U transformers flash-linear-attention 推奨 (GDN 高速カーネル)。

ファイル

ファイル	内容
`modeling_looped_gdn.py` / `configuration_looped_gdn.py`	transformers 用カスタムコード (`trust_remote_code`)
`looped_gdn.py`	モデル本体・空間マージ変換 (`python looped_gdn.py --src j-llm/Qwen3.5-2B-SpeedX2 --groups 6`)
`scripts/colab_looped_distill.py`	蒸留スクリプト (Colab に貼るだけ)
`scripts/infer_looped_gdn.py`	推論 / 対話スクリプト
`scripts/colab_ast_transplant.py`	高度な空間移植 (活性考慮 RegMean + DP 可変長分割 + 活性考慮 LoRA)
`scripts/test_looped_gdn.py`	単体テスト
`looped_config.json`	旧形式の設定 (`LoopedGDNForCausalLM.load` 用)

学習

Stage 1: グループ単位 hidden 蒸留 (相対 MSE + コサイン) / Stage 2: 教師 logits KL + hidden 損失
データ: C4 (日本語・英語)

注意

蒸留による近似で教師より性能は低下します。ライセンスは元モデル (Qwen/Qwen3.5-2B) に従います。元モデル: Qwen Team / 全 GDN 化: summerMC, j-llm

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Safetensors

Model size

1.0B params

Tensor type

BF16

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