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metadata
license: apache-2.0
license_link: https://huggingface.co/Qwen/Qwen2.5-7B-Instruct/blob/main/LICENSE
language:
  - en
pipeline_tag: text-generation
base_model: Qwen/Qwen2.5-7B
tags:
  - chat

Llama.cpp imatrix quantizations of Qwen/Qwen2.5-7B-Instruct

qwen

Using llama.cpp commit eca0fab for quantization.

Original model: Qwen/Qwen2.5-7B-Instruct

All quants were made using the imatrix option and Bartowski's calibration file.

Perplexity table (the lower the better)

Quant Size (MB) PPL Size (%) Accuracy (%) PPL error rate
IQ1_S 1816 29.2065 12.5 27.04 0.23022
IQ1_M 1948 17.5876 13.4 44.9 0.13256
IQ2_XXS 2168 13.0997 14.92 60.28 0.10138
IQ2_XS 2355 10.6611 16.21 74.06 0.07823
IQ2_S 2476 10.236 17.04 77.14 0.07461
IQ2_M 2652 9.5241 18.25 82.91 0.06876
Q2_K_S 2703 9.7181 18.6 81.25 0.07113
Q2_K 2877 9.271 19.8 85.17 0.06672
IQ3_XXS 2971 8.677 20.44 91 0.06191
IQ3_XS 3192 8.468 21.97 93.25 0.05972
Q3_K_S 3331 8.6524 22.92 91.26 0.06144
IQ3_S 3338 8.4723 22.97 93.2 0.06045
IQ3_M 3409 8.4488 23.46 93.46 0.05973
Q3_K_M 3632 8.2232 24.99 96.02 0.05882
Q3_K_L 3900 8.1675 26.84 96.68 0.05826
IQ4_XS 4024 8.0803 27.69 97.72 0.0579
IQ4_NL 4233 8.0301 29.13 98.33 0.05724
Q4_0 4239 7.9852 29.17 98.88 0.05586
Q4_K_S 4252 8.0483 29.26 98.11 0.05752
Q4_K_M 4467 7.997 30.74 98.74 0.05697
Q4_1 4648 8.1016 31.98 97.46 0.05824
Q5_K_S 5069 7.9466 34.88 99.36 0.05652
Q5_0 5082 7.9939 34.97 98.78 0.05726
Q5_K_M 5193 7.9279 35.73 99.6 0.05633
Q5_1 5491 7.9334 37.79 99.53 0.05634
Q6_K 5965 7.9066 41.05 99.87 0.05617
Q8_0 7724 7.8996 53.15 99.96 0.05614
F16 14532 7.8961 100 100 0.05608

Qwen2.5-7B-Instruct

Introduction

Qwen2.5 is the latest series of Qwen large language models. For Qwen2.5, we release a number of base language models and instruction-tuned language models ranging from 0.5 to 72 billion parameters. Qwen2.5 brings the following improvements upon Qwen2:

  • Significantly more knowledge and has greatly improved capabilities in coding and mathematics, thanks to our specialized expert models in these domains.
  • Significant improvements in instruction following, generating long texts (over 8K tokens), understanding structured data (e.g, tables), and generating structured outputs especially JSON. More resilient to the diversity of system prompts, enhancing role-play implementation and condition-setting for chatbots.
  • Long-context Support up to 128K tokens and can generate up to 8K tokens.
  • Multilingual support for over 29 languages, including Chinese, English, French, Spanish, Portuguese, German, Italian, Russian, Japanese, Korean, Vietnamese, Thai, Arabic, and more.

This repo contains the instruction-tuned 7B Qwen2.5 model, which has the following features:

  • Type: Causal Language Models
  • Training Stage: Pretraining & Post-training
  • Architecture: transformers with RoPE, SwiGLU, RMSNorm, and Attention QKV bias
  • Number of Parameters: 7.61B
  • Number of Paramaters (Non-Embedding): 6.53B
  • Number of Layers: 28
  • Number of Attention Heads (GQA): 28 for Q and 4 for KV
  • Context Length: Full 131,072 tokens and generation 8192 tokens
    • Please refer to this section for detailed instructions on how to deploy Qwen2.5 for handling long texts.

For more details, please refer to our blog, GitHub, and Documentation.

Requirements

The code of Qwen2.5 has been in the latest Hugging face transformers and we advise you to use the latest version of transformers.

With transformers<4.37.0, you will encounter the following error:

KeyError: 'qwen2'

Quickstart

Here provides a code snippet with apply_chat_template to show you how to load the tokenizer and model and how to generate contents.

from transformers import AutoModelForCausalLM, AutoTokenizer

model_name = "Qwen/Qwen2.5-7B-Instruct"

model = AutoModelForCausalLM.from_pretrained(
    model_name,
    torch_dtype="auto",
    device_map="auto"
)
tokenizer = AutoTokenizer.from_pretrained(model_name)

prompt = "Give me a short introduction to large language model."
messages = [
    {"role": "system", "content": "You are Qwen, created by Alibaba Cloud. You are a helpful assistant."},
    {"role": "user", "content": prompt}
]
text = tokenizer.apply_chat_template(
    messages,
    tokenize=False,
    add_generation_prompt=True
)
model_inputs = tokenizer([text], return_tensors="pt").to(model.device)

generated_ids = model.generate(
    **model_inputs,
    max_new_tokens=512
)
generated_ids = [
    output_ids[len(input_ids):] for input_ids, output_ids in zip(model_inputs.input_ids, generated_ids)
]

response = tokenizer.batch_decode(generated_ids, skip_special_tokens=True)[0]

Processing Long Texts

The current config.json is set for context length up to 32,768 tokens. To handle extensive inputs exceeding 32,768 tokens, we utilize YaRN, a technique for enhancing model length extrapolation, ensuring optimal performance on lengthy texts.

For supported frameworks, you could add the following to config.json to enable YaRN:

{
  ...,
  "rope_scaling": {
    "factor": 4.0,
    "original_max_position_embeddings": 32768,
    "type": "yarn"
  }
}

For deployment, we recommend using vLLM. Please refer to our Documentation for usage if you are not familar with vLLM. Presently, vLLM only supports static YARN, which means the scaling factor remains constant regardless of input length, potentially impacting performance on shorter texts. We advise adding the rope_scaling configuration only when processing long contexts is required.

Evaluation & Performance

Detailed evaluation results are reported in this 📑 blog.

For requirements on GPU memory and the respective throughput, see results here.

Citation

If you find our work helpful, feel free to give us a cite.

@misc{qwen2.5,
    title = {Qwen2.5: A Party of Foundation Models},
    url = {https://qwenlm.github.io/blog/qwen2.5/},
    author = {Qwen Team},
    month = {September},
    year = {2024}
}

@article{qwen2,
      title={Qwen2 Technical Report}, 
      author={An Yang and Baosong Yang and Binyuan Hui and Bo Zheng and Bowen Yu and Chang Zhou and Chengpeng Li and Chengyuan Li and Dayiheng Liu and Fei Huang and Guanting Dong and Haoran Wei and Huan Lin and Jialong Tang and Jialin Wang and Jian Yang and Jianhong Tu and Jianwei Zhang and Jianxin Ma and Jin Xu and Jingren Zhou and Jinze Bai and Jinzheng He and Junyang Lin and Kai Dang and Keming Lu and Keqin Chen and Kexin Yang and Mei Li and Mingfeng Xue and Na Ni and Pei Zhang and Peng Wang and Ru Peng and Rui Men and Ruize Gao and Runji Lin and Shijie Wang and Shuai Bai and Sinan Tan and Tianhang Zhu and Tianhao Li and Tianyu Liu and Wenbin Ge and Xiaodong Deng and Xiaohuan Zhou and Xingzhang Ren and Xinyu Zhang and Xipin Wei and Xuancheng Ren and Yang Fan and Yang Yao and Yichang Zhang and Yu Wan and Yunfei Chu and Yuqiong Liu and Zeyu Cui and Zhenru Zhang and Zhihao Fan},
      journal={arXiv preprint arXiv:2407.10671},
      year={2024}
}