81 lines
3.2 KiB
Markdown
81 lines
3.2 KiB
Markdown
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---
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license: qwen
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license_name: Tongyi Qianwen LICENSE AGREEMENT
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license_link: LICENSE
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pipeline_tag: text-generation
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tags:
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- qwen2.5
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- gptq
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- int4
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- 量化修复
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- vLLM
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- sglang
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---
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# 通义千问2.5-7B-Chat-GPTQ-Int4-量化修复
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原模型 [qwen/Qwen2.5-7B-Instruct](https://www.modelscope.cn/models/qwen/Qwen2.5-7B-Instruct)
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### 【模型更新日期】
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注：通过`snapshot_download`函数传入`revision=...`来下载指定的`tag`版本
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```
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2024-09-23 tag g128v2
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1. 减少长文时吐字重复与消失的情况
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2024-09-23 tag g32v2
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1. 减少长文时吐字重复与消失的情况
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2024-09-22 tag g128
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1. add group 128
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2024-09-22 tag g32
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1. add group 32
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```
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### 【模型列表】
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| tag | 文件大小 | 最近更新时间 |
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|----------|---------|--------------|
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| `g128v2` | `5.3GB` | `2024-09-23` |
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| `g32v2` | `5.6GB` | `2024-09-23` |
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| `g128` | `5.3GB` | `2024-09-22` |
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| `g32` | `5.6GB` | `2024-09-22` |
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```python
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from modelscope import snapshot_download
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snapshot_download('tclf90/qwen2.5-7b-instruct-gptq-int4', cache_dir="本地路径", revision='g128v2')
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snapshot_download('tclf90/qwen2.5-7b-instruct-gptq-int4', cache_dir="本地路径", revision='g32v2')
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```
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### 【修复内容】
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1. 对GPTQ量化的校准做了额外优化；减少模型的 `1.乱吐字`、`2.无限循环`、`3.长文能力丢失`等情况。
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2. 有些推理框架的默认`top_k`与`top_p`较大，可以考虑减小对应数值，来获得更合理的模型输出。
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3. 根据模型实际情况，可以支持1卡、2卡及4卡的`tensor-parallel-size`启动。
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### 【介绍】
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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:
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- Significantly **more knowledge** and has greatly improved capabilities in **coding** and **mathematics**, thanks to our specialized expert models in these domains.
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- 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.
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- **Long-context Support** up to 128K tokens and can generate up to 8K tokens.
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- **Multilingual support** for over 29 languages, including Chinese, English, French, Spanish, Portuguese, German, Italian, Russian, Japanese, Korean, Vietnamese, Thai, Arabic, and more.
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For more details, please refer to our [blog](https://qwenlm.github.io/blog/qwen2.5/), [GitHub](https://github.com/QwenLM/Qwen2.5), and [Documentation](https://qwen.readthedocs.io/en/latest/).
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### 【模型下载】
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```python
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from modelscope import snapshot_download
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snapshot_download('tclf90/模型名', cache_dir="本地路径", revision='...tag...')
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```
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### 【高并发RESTFul API推理】
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方式1：[vllm](https://github.com/vllm-project/vllm)
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方式2：[sglang](https://github.com/sgl-project/sglang)
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目前推荐使用sglang进行部署，相较于vllm, sglang于A100实测，能有50%～100%的吞吐增益。
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