mirror of https://github.com/hpcaitech/ColossalAI
291 lines
9.3 KiB
Markdown
291 lines
9.3 KiB
Markdown
# Colossal-AI
|
||
<div id="top" align="center">
|
||
|
||
[](https://www.colossalai.org/)
|
||
|
||
一个整合高效并行技术的 AI 大模型训练系统。
|
||
|
||
<h3> <a href="https://arxiv.org/abs/2110.14883"> 论文 </a> |
|
||
<a href="https://www.colossalai.org/"> 文档 </a> |
|
||
<a href="https://github.com/hpcaitech/ColossalAI-Examples"> 例程 </a> |
|
||
<a href="https://github.com/hpcaitech/ColossalAI/discussions"> 论坛 </a> |
|
||
<a href="https://medium.com/@hpcaitech"> 博客 </a></h3>
|
||
|
||
[](https://github.com/hpcaitech/ColossalAI/actions/workflows/build.yml)
|
||
[](https://colossalai.readthedocs.io/en/latest/?badge=latest)
|
||
[](https://www.codefactor.io/repository/github/hpcaitech/colossalai)
|
||
[](https://huggingface.co/hpcai-tech)
|
||
[](https://join.slack.com/t/colossalaiworkspace/shared_invite/zt-z7b26eeb-CBp7jouvu~r0~lcFzX832w)
|
||
[](https://raw.githubusercontent.com/hpcaitech/public_assets/main/colossalai/img/WeChat.png)
|
||
|
||
| [English](README.md) | [中文](README-zh-Hans.md) |
|
||
|
||
</div>
|
||
|
||
|
||
## 目录
|
||
<ul>
|
||
<li><a href="#为何选择-Colossal-AI">为何选择 Colossal-AI</a> </li>
|
||
<li><a href="#特点">特点</a> </li>
|
||
<li>
|
||
<a href="#展示样例">展示样例</a>
|
||
<ul>
|
||
<li><a href="#ViT">ViT</a></li>
|
||
<li><a href="#GPT-3">GPT-3</a></li>
|
||
<li><a href="#GPT-2">GPT-2</a></li>
|
||
<li><a href="#BERT">BERT</a></li>
|
||
<li><a href="#PaLM">PaLM</a></li>
|
||
</ul>
|
||
</li>
|
||
|
||
<li>
|
||
<a href="#安装">安装</a>
|
||
<ul>
|
||
<li><a href="#PyPI">PyPI</a></li>
|
||
<li><a href="#从源代码安装">从源代码安装</a></li>
|
||
</ul>
|
||
</li>
|
||
<li><a href="#使用-Docker">使用 Docker</a></li>
|
||
<li><a href="#社区">社区</a></li>
|
||
<li><a href="#做出贡献">做出贡献</a></li>
|
||
<li><a href="#快速预览">快速预览</a></li>
|
||
<ul>
|
||
<li><a href="#几行代码开启分布式训练">几行代码开启分布式训练</a></li>
|
||
<li><a href="#构建一个简单的2维并行模型">构建一个简单的2维并行模型</a></li>
|
||
</ul>
|
||
<li><a href="#引用我们">引用我们</a></li>
|
||
</ul>
|
||
|
||
## 为何选择 Colossal-AI
|
||
<div align="center">
|
||
<a href="https://youtu.be/KnXSfjqkKN0">
|
||
<img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/colossalai/img/JamesDemmel_Colossal-AI.png" width="600" />
|
||
</a>
|
||
|
||
James Demmel 教授 (加州大学伯克利分校): Colossal-AI 让分布式训练高效、易用、可扩展。
|
||
</div>
|
||
|
||
<p align="right">(<a href="#top">返回顶端</a>)</p>
|
||
|
||
## 特点
|
||
|
||
Colossal-AI 为您提供了一系列并行训练组件。我们的目标是让您的分布式 AI 模型训练像普通的单 GPU 模型一样简单。我们提供的友好工具可以让您在几行代码内快速开始分布式训练。
|
||
|
||
- 并行化策略
|
||
- 数据并行
|
||
- 流水线并行
|
||
- 1维, [2维](https://arxiv.org/abs/2104.05343), [2.5维](https://arxiv.org/abs/2105.14500), [3维](https://arxiv.org/abs/2105.14450) 张量并行
|
||
- [序列并行](https://arxiv.org/abs/2105.13120)
|
||
- [零冗余优化器 (ZeRO)](https://arxiv.org/abs/2108.05818)
|
||
- 异构内存管理
|
||
- [PatrickStar](https://arxiv.org/abs/2108.05818)
|
||
- 使用友好
|
||
- 基于参数文件的并行化
|
||
<p align="right">(<a href="#top">返回顶端</a>)</p>
|
||
|
||
## 展示样例
|
||
### ViT
|
||
<p align="center">
|
||
<img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/colossalai/img/ViT.png" width="450" />
|
||
</p>
|
||
|
||
- 14倍批大小和5倍训练速度（张量并行=64）
|
||
|
||
### GPT-3
|
||
<p align="center">
|
||
<img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/colossalai/img/GPT3.png" width=700/>
|
||
</p>
|
||
|
||
- 释放 50% GPU 资源占用, 或 10.7% 加速
|
||
|
||
### GPT-2
|
||
<img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/colossalai/img/GPT2.png" width=800/>
|
||
|
||
- 降低11倍 GPU 显存占用，或超线性扩展（张量并行）
|
||
|
||
<img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/colossalai/img/(updated)GPT-2.png" width=800>
|
||
|
||
- 用相同的硬件条件训练24倍大的模型
|
||
- 超3倍的吞吐量
|
||
|
||
### BERT
|
||
<img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/colossalai/img/BERT.png" width=800/>
|
||
|
||
- 2倍训练速度，或1.5倍序列长度
|
||
|
||
### PaLM
|
||
- [PaLM-colossalai](https://github.com/hpcaitech/PaLM-colossalai): 可扩展的谷歌 Pathways Language Model ([PaLM](https://ai.googleblog.com/2022/04/pathways-language-model-palm-scaling-to.html)) 实现。
|
||
|
||
请访问我们的[文档和教程](https://www.colossalai.org/)以了解详情。
|
||
|
||
<p align="right">(<a href="#top">返回顶端</a>)</p>
|
||
|
||
## 安装
|
||
|
||
### PyPI
|
||
|
||
```bash
|
||
pip install colossalai
|
||
```
|
||
该命令将会安装 CUDA extension, 如果你已安装 CUDA, NVCC 和 torch。
|
||
|
||
如果你不想安装 CUDA extension, 可在命令中添加`--global-option="--no_cuda_ext"`, 例如:
|
||
```bash
|
||
pip install colossalai --global-option="--no_cuda_ext"
|
||
```
|
||
|
||
如果你想使用 `ZeRO`, 你可以使用:
|
||
```bash
|
||
pip install colossalai[zero]
|
||
```
|
||
|
||
### 从源代码安装
|
||
|
||
> Colossal-AI 的版本将与该项目的主分支保持一致。欢迎通过 issue 反馈你遇到的任何问题 :)
|
||
|
||
```shell
|
||
git clone https://github.com/hpcaitech/ColossalAI.git
|
||
cd ColossalAI
|
||
# 安装依赖
|
||
pip install -r requirements/requirements.txt
|
||
|
||
# 安装 colossalai
|
||
pip install .
|
||
```
|
||
|
||
如果你不想安装和使用 CUDA kernel fusion (使用 fused 优化器需安装):
|
||
|
||
```shell
|
||
pip install --global-option="--no_cuda_ext" .
|
||
```
|
||
|
||
<p align="right">(<a href="#top">返回顶端</a>)</p>
|
||
|
||
## 使用 Docker
|
||
|
||
运行以下命令从我们提供的 docker 文件中建立 docker 镜像。
|
||
|
||
```bash
|
||
cd ColossalAI
|
||
docker build -t colossalai ./docker
|
||
```
|
||
|
||
运行以下命令从以交互式启动 docker 镜像.
|
||
|
||
```bash
|
||
docker run -ti --gpus all --rm --ipc=host colossalai bash
|
||
```
|
||
|
||
<p align="right">(<a href="#top">返回顶端</a>)</p>
|
||
|
||
## 社区
|
||
欢迎通过[论坛](https://github.com/hpcaitech/ColossalAI/discussions),
|
||
[Slack](https://join.slack.com/t/colossalaiworkspace/shared_invite/zt-z7b26eeb-CBp7jouvu~r0~lcFzX832w),
|
||
或[微信](https://raw.githubusercontent.com/hpcaitech/public_assets/main/colossalai/img/WeChat.png "qrcode")加入 Colossal-AI 社区，与我们分享你的建议和问题。
|
||
|
||
|
||
## 做出贡献
|
||
|
||
欢迎为该项目做出贡献，请参阅[贡献指南](./CONTRIBUTING.md)。
|
||
|
||
真诚感谢所有贡献者！
|
||
|
||
<a href="https://github.com/hpcaitech/ColossalAI/graphs/contributors"><img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/colossalai/img/contributor_avatar.png" width="800px"></a>
|
||
|
||
*贡献者头像的展示顺序是随机的。*
|
||
|
||
<p align="right">(<a href="#top">返回顶端</a>)</p>
|
||
|
||
## 快速预览
|
||
|
||
### 几行代码开启分布式训练
|
||
|
||
```python
|
||
import colossalai
|
||
from colossalai.utils import get_dataloader
|
||
|
||
|
||
# my_config 可以是 config 文件的路径或字典对象
|
||
# 'localhost' 仅适用于单节点，在多节点时需指明节点名
|
||
colossalai.launch(
|
||
config=my_config,
|
||
rank=rank,
|
||
world_size=world_size,
|
||
backend='nccl',
|
||
port=29500,
|
||
host='localhost'
|
||
)
|
||
|
||
# 构建模型
|
||
model = ...
|
||
|
||
# 构建数据集, dataloader 会默认处理分布式数据 sampler
|
||
train_dataset = ...
|
||
train_dataloader = get_dataloader(dataset=dataset,
|
||
shuffle=True
|
||
)
|
||
|
||
|
||
# 构建优化器
|
||
optimizer = ...
|
||
|
||
# 构建损失函数
|
||
criterion = ...
|
||
|
||
# 初始化 colossalai
|
||
engine, train_dataloader, _, _ = colossalai.initialize(
|
||
model=model,
|
||
optimizer=optimizer,
|
||
criterion=criterion,
|
||
train_dataloader=train_dataloader
|
||
)
|
||
|
||
# 开始训练
|
||
engine.train()
|
||
for epoch in range(NUM_EPOCHS):
|
||
for data, label in train_dataloader:
|
||
engine.zero_grad()
|
||
output = engine(data)
|
||
loss = engine.criterion(output, label)
|
||
engine.backward(loss)
|
||
engine.step()
|
||
|
||
```
|
||
|
||
### 构建一个简单的2维并行模型
|
||
|
||
假设我们有一个非常巨大的 MLP 模型，它巨大的 hidden size 使得它难以被单个 GPU 容纳。我们可以将该模型的权重以二维网格的形式分配到多个 GPU 上，且保持你熟悉的模型构建方式。
|
||
|
||
```python
|
||
from colossalai.nn import Linear2D
|
||
import torch.nn as nn
|
||
|
||
|
||
class MLP_2D(nn.Module):
|
||
|
||
def __init__(self):
|
||
super().__init__()
|
||
self.linear_1 = Linear2D(in_features=1024, out_features=16384)
|
||
self.linear_2 = Linear2D(in_features=16384, out_features=1024)
|
||
|
||
def forward(self, x):
|
||
x = self.linear_1(x)
|
||
x = self.linear_2(x)
|
||
return x
|
||
|
||
```
|
||
|
||
<p align="right">(<a href="#top">返回顶端</a>)</p>
|
||
|
||
## 引用我们
|
||
|
||
```
|
||
@article{bian2021colossal,
|
||
title={Colossal-AI: A Unified Deep Learning System For Large-Scale Parallel Training},
|
||
author={Bian, Zhengda and Liu, Hongxin and Wang, Boxiang and Huang, Haichen and Li, Yongbin and Wang, Chuanrui and Cui, Fan and You, Yang},
|
||
journal={arXiv preprint arXiv:2110.14883},
|
||
year={2021}
|
||
}
|
||
```
|
||
|
||
<p align="right">(<a href="#top">返回顶端</a>)</p> |