8G 显存玩转书生大模型 Demo

1、基础环境配置

studio-conda -o internlm-base -t demo
# 与 studio-conda 等效的配置方案
# conda create -n demo python==3.10 -y
# conda activate demo
# conda install pytorch==2.0.1 torchvision==0.15.2 torchaudio==2.0.2 pytorch-cuda=11.7 -c pytorch -c nvidia

1.1 下载依赖包

pip install huggingface-hub==0.17.3
pip install transformers==4.34 
pip install psutil==5.9.8
pip install accelerate==0.24.1
pip install streamlit==1.32.2 
pip install matplotlib==3.8.3 
pip install modelscope==1.9.5
pip install sentencepiece==0.1.99

2、下载 InternLM2-Chat-1.8B 模型

mkdir -p /root/demo
touch /root/demo/cli_demo.py
touch /root/demo/download_mini.py
cd /root/demo

3、将如下代码复制进/root/demo/download_mini.py 文件

import os
from modelscope.hub.snapshot_download import snapshot_download

# 创建保存模型目录

os.system("mkdir /root/models")

# save_dir是模型保存到本地的目录
save_dir="/root/models"

snapshot_download("Shanghai_AI_Laboratory/internlm2-chat-1_8b", 
                  cache_dir=save_dir, 
                  revision='v1.1.0')

4、执行命令，下载模型参数文件：

python /root/demo/download_mini.py

5、运行 cli_demo，双击打开 /root/demo/cli_demo.py 文件，复制以下代码：

import torch
from transformers import AutoTokenizer, AutoModelForCausalLM


model_name_or_path = "/root/models/Shanghai_AI_Laboratory/internlm2-chat-1_8b"

tokenizer = AutoTokenizer.from_pretrained(model_name_or_path, trust_remote_code=True, device_map='cuda:0')
model = AutoModelForCausalLM.from_pretrained(model_name_or_path, trust_remote_code=True, torch_dtype=torch.bfloat16, device_map='cuda:0')
model = model.eval()

system_prompt = """You are an AI assistant whose name is InternLM (书生·浦语).
- InternLM (书生·浦语) is a conversational language model that is developed by Shanghai AI Laboratory (上海人工智能实验室). It is designed to be helpful, honest, and harmless.
- InternLM (书生·浦语) can understand and communicate fluently in the language chosen by the user such as English and 中文.
"""

messages = [(system_prompt, '')]

print("=============Welcome to InternLM chatbot, type 'exit' to exit.=============")

while True:
    input_text = input("\nUser  >>> ")
    input_text = input_text.replace(' ', '')
    if input_text == "exit":
        break

    length = 0
    for response, _ in model.stream_chat(tokenizer, input_text, messages):
        if response is not None:
            print(response[length:], flush=True, end="")
            length = len(response)

5.1 、输入命令，执行 Demo 程序：

python /root/demo/cli_demo.py

等待模型加载完成，并输入示例：

6.1、生成一则300字左右的故事