可以通过以下代码下载并加载模型，以facebook/opt-6.7b为例：

from transformers import AutoModelForCausalLM, AutoTokenizer

tokenizer = AutoTokenizer.from_pretrained('facebook/opt-6.7b', cache_dir='your_loaded_path')
model = AutoModelForCausalLM.from_pretrained('facebook/opt-6.7b', cache_dir='your_loaded_path',
                                             device_map='your_device', load_in_8bit=True)

如果出现以下报错，则说明是网络连接问题：无法连接到 Hugging Face 的服务器

OSError: We couldn't connect to 'https://huggingface.co' to load this file, couldn't find it in the cached files and it looks like facebook/opt-6.7b is not the path to a directory containing a file named config.json.
Checkout your internet connection or see how to run the library in offline mode at 'https://huggingface.co/docs/transformers/installation#offline-mode'.

解决方法：只需要设置 HF mirror 就可以修复HF的网络连接问题，在终端输入以下命令

export HF_ENDPOINT=https://hf-mirror.com

成功开始下载：

如果仅需要下载模型，且安装了 Hugging Face CLI 工具，可以使用以下命令简单快捷地下载模型ckpt到本地：

huggingface-cli download facebook/opt-6.7b --cache-dir [/本地路径]

# Shell
huggingface-cli download --repo-type dataset --token [你的token] --resume-download [数据集名称] --cache-dir [/本地路径] --local-dir-use-symlinks False