Lora本地微调实战 --deepseek-r1蒸馏模型

一、准备工作

1.1 下载模型

Huggingface是一个开放的人工智能模型库，提供了大量经过预训练的模型供用户下载和使用。要下载模型访问Huggingface网站： https://huggingface.co/models。

如果huggingface无法下载，可以使用下面的地址下载：

• 模型下载地址：https://pan.quark.cn/s/a22f5a9e3490 （deepseek-r1-1.5b）
• 数据集准备：https://pan.quark.cn/s/a220f415b35c

确保模型目录 deepseekr1-1.5b 下包含以下关键文件：

config.json
pytorch_model.bin  # 或 model.safetensors（必须存在至少一个）
tokenizer.json     # 或其他分词器文件（如 tokenizer_config.json）

1.2 依赖安装

# 在安装命令后添加 -i 参数指定镜像源：
pip install transformers datasets -i https://mirrors.aliyun.com/pypi/simple/# Transformers 库需要依赖 PyTorch、TensorFlow 或 Flax 中的一个才能加载模型
# 通用安装命令（CPU版）
pip install torch
# 如果有NVIDIA显卡（CUDA，如果下载包无cuXXX后缀表示是CPU版本）
pip install torch torchvision torchaudio --index-url https://mirrors.aliyun.com/pypi/simple/# 其他依赖（device_map="auto"、quantization_config）
pip install bitsandbytes accelerate>=0.26.0 --index-url https://mirrors.aliyun.com/pypi/simple/# Windows 官方不提供预编译的 CUDA 版 bitsandbytes，windows场景：卸载现有版本，安装社区维护的预编译版本
# 关于其他版本可自行查看下载：https://github.com/jllllll/bitsandbytes-windows-webui/releases/
pip uninstall bitsandbytes -y
pip install https://github.com/jllllll/bitsandbytes-windows-webui/releases/download/wheels/bitsandbytes-0.43.0-py3-none-win_amd64.whl

ps：常用镜像源：

阿里云：https://mirrors.aliyun.com/pypi/simple/
豆瓣：  https://pypi.doubanio.com/simple/
华为云：https://repo.huaweicloud.com/repository/pypi/simple/

永久配置镜像源：

pip config set global.index-url  https://mirrors.aliyun.com/pypi/simple/
pip config list

查看 CUDA 版本（需提前安装 NVIDIA 驱动）：

nvidia-smi  # 右上角显示最高支持的 CUDA 版本（如 12.6）

1.3 训练数据

data_prepare.py:

# -*- coding: utf-8 -*-
# here is list of 50 examples of prompt and completions focused on singing skills
samples = [{"prompt": "Question 1: What is the first step to improving your singing voice?","completion": "Answer 1: Begin by warming up your vocal cords with gentle exercises like humming or lip trills."},{"prompt": "Question 2: How can you improve your breath control while singing?","completion": "Answer 2: Practice diaphragmatic breathing by inhaling deeply through your nose and controlling your exhale while singing sustained notes."},{"prompt": "Question 3: What are common mistakes beginners make when learning to sing?","completion": "Answer 3: Common mistakes include straining the voice, neglecting to warm up, and improper breathing techniques."},{"prompt": "Question 4: How do you find your vocal range?","completion": "Answer 4: Experiment by singing scales up and down to identify the lowest and highest note you can comfortably sustain."},{"prompt": "Question 5: What exercises help improve pitch accuracy?","completion": "Answer 5: Practice scales, use a piano or digital tuner for reference, and try interval training to enhance pitch precision."},{"prompt": "Question 6: How can you protect your vocal cords from strain?","completion": "Answer 6: Avoid over-singing, stay hydrated, and limit exposure to irritants like smoke or excessively dry air."},{"prompt": "Question 7: What role does posture play in singing?","completion": "Answer 7: Proper posture opens up the diaphragm and throat, allowing for better breath support and vocal projection."},{"prompt": "Question 8: How do you improve vocal tone quality?","completion": "Answer 8: Focus on resonance and placement, and practice vocal exercises like sirens to achieve a smoother tone."},{"prompt": "Question 9: What techniques help develop vibrato in singing?","completion": "Answer 9: Practice sustaining notes while gently oscillating your pitch; focus on relaxation and consistent airflow."},{"prompt": "Question 10: How can you overcome stage fright while singing?","completion": "Answer 10: Prepare thoroughly, practice mindfulness techniques, and start performing in smaller, supportive settings."},{"prompt": "Question 11: What warm-up exercises are essential for singers?","completion": "Answer 11: Lip trills, humming, and singing scales are effective warm-up exercises that prepare your voice for singing."},{"prompt": "Question 12: How do you sing high notes without straining?","completion": "Answer 12: Use proper breath support, relax your throat, and place the sound forward in your mask (resonance areas)."},{"prompt": "Question 13: What is the importance of ear training for singers?","completion": "Answer 13: Ear training helps singers recognize pitches, harmonies, and intervals, improving overall musicality and pitch accuracy."},{"prompt": "Question 14: How do you maintain vocal health during a busy singing schedule?","completion": "Answer 14: Stay hydrated, get adequate rest, and avoid overuse by incorporating regular vocal breaks and proper warm-ups."},{"prompt": "Question 15: What foods and drinks should singers avoid?","completion": "Answer 15: Avoid dairy, caffeine, and spicy foods before singing, as they can cause mucus buildup or throat irritation."},{"prompt": "Question 16: How can you improve d