机器学习开源框架系列：Torch：2：MacOS上安装Torch7

╰半夏微凉° 2022-12-22 12:29 174阅读 0赞

![这里写图片描述][70]  
由于希望确认一下2015年和2016年的两篇论文相关的内容，这篇文章以官方提示的安装方式为例进行安装方法的memo。

--------------------

# 基本信息 #

<table> 
 <thead> 
  <tr> 
   <th>项目</th> 
   <th>说明</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>官方网站</td> 
   <td>http://torch.ch/</td> 
  </tr> 
  <tr> 
   <td>开源/闭源</td> 
   <td>开源</td> 
  </tr> 
  <tr> 
   <td>License类别</td> 
   <td>BSD License</td> 
  </tr> 
  <tr> 
   <td>代码管理地址</td> 
   <td>https://github.com/torch/torch7</td> 
  </tr> 
  <tr> 
   <td>开发语言</td> 
   <td>C，Lua</td> 
  </tr> 
  <tr> 
   <td>支持平台</td> 
   <td>由于使用C和Lua，Torch可以支持多种操作系统诸如Linux/MacOSX/iOS/Android等</td> 
  </tr> 
  <tr> 
   <td>当前版本</td> 
   <td>7.0 （2017/02/27）</td> 
  </tr> 
 </tbody> 
</table>

其他基本信息可参看：[https://liumiaocn.blog.csdn.net/article/details/80342750][https_liumiaocn.blog.csdn.net_article_details_80342750]

# 安装方式 #

## 步骤1: 下载git仓库 ##

> 执行命令：git clone https://github.com/torch/distro.git ~/torch --recursive

liumiaocn:~ liumiao$ git clone https://github.com/torch/distro.git ~/torch --recursive
    Cloning into '/Users/liumiao/torch'...
    remote: Enumerating objects: 1601, done.
    ...省略
    Submodule path 'pkg/xlua': checked out '41308fe696bf8b0892f4ad4f9857d12a87a3f75e'
    liumiaocn:~ liumiao$ du -k torch |tail -n1
    79120	torch
    liumiaocn:~ liumiao$

## 步骤2: 安装依赖 ##

> 执行命令：cd ~/torch; bash install-deps;

liumiaocn:~ liumiao$ cd torch/
    liumiaocn:torch liumiao$ ls
    CMakeLists.txt		clean.bat		extra			install.sh		travis_cuda_install.sh
    LICENSE.md		clean.sh		install-deps		pkg			uninstall.bat
    README.md		cmake			install-deps.bat	test.bat		update.sh
    admin			exe			install.bat		test.sh			win-files
    liumiaocn:torch liumiao$ view install-deps
    liumiaocn:torch liumiao$ which bash
    /bin/bash
    liumiaocn:torch liumiao$ bash install-deps
    ...省略
    Emacs Lisp files have been installed to:
      /usr/local/share/emacs/site-lisp/git
    ==> cmake
    Emacs Lisp files have been installed to:
      /usr/local/share/emacs/site-lisp/cmake
    liumiaocn:torch liumiao$

torch提供了上述的脚本用于直接下载相关的依赖，实际上确认一下可以看到对于不同操作系统的支持，比如此处是使用macOS的方式, 可以看到如果没有安装brew，它还会替你安装一个，然后通过brew来完成所需要的依赖的安装

79 if [[ `uname` == 'Darwin' ]]; then
     80     # GCC?
     81     if [[ `which gcc` == '' ]]; then
     82         echo "MacOS doesn't come with GCC: please install XCode and the command line tools."
     83         exit 1
     84     fi
     85 
     86     # Install Homebrew (pkg manager):
     87     if [[ `which brew` == '' ]]; then
     88         ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
     89     fi
     90 
     91     # Install dependencies:
     92     brew update
     93     brew install git readline cmake wget
     94     brew install libjpeg imagemagick zeromq graphicsmagick openssl
     95     brew link readline --force
     96     brew cask install xquartz
     97     brew list -1 | grep -q "^gnuplot\$" && brew remove gnuplot
     98     brew install gnuplot --with-wxmac --with-cairo --with-pdflib-lite --with-x11 --without-lua
     99     brew install qt || true

## 步骤3: 安装torch ##

> 执行命令：./install.sh

liumiaocn:torch liumiao$ pwd
    /Users/liumiao/torch
    liumiaocn:torch liumiao$ ls
    CMakeLists.txt		clean.bat		extra			install.sh		travis_cuda_install.sh
    LICENSE.md		clean.sh		install-deps		pkg			uninstall.bat
    README.md		cmake			install-deps.bat	test.bat		update.sh
    admin			exe			install.bat		test.sh			win-files
    liumiaocn:torch liumiao$ ./install.sh 
    Prefix set to /Users/liumiao/torch/install
    Installing Lua version: LUAJIT21
    CMake Warning (dev) in CMakeLists.txt:
    ...省略
    -- Configuring done
    -- Generating done
    -- Build files have been written to: /Users/liumiao/torch/pkg/torch/build
    Scanning dependencies of target luaT
    Scanning dependencies of target TH
    [  2%] Building C object lib/luaT/CMakeFiles/luaT.dir/luaT.c.o
    ...省略
    Do you want to automatically prepend the Torch install location
    to PATH and LD_LIBRARY_PATH in your /Users/liumiao/.bashrc? (yes/no)
    [yes] >>> 
    yes
    liumiaocn:torch liumiao$ cat ~/.bashrc |tail -n1
    . /Users/liumiao/torch/install/bin/torch-activate
    liumiaocn:torch liumiao$

# 安装确认 #

## 步骤1: 读取环境变量 ##

> 执行命令：source ~/.bashrc

liumiaocn:torch liumiao$ source ~/.bashrc 
    liumiaocn:torch liumiao$ which th
    /Users/liumiao/torch/install/bin/th
    liumiaocn:torch liumiao$

## 步骤2: 确认luagit ##

Torch7希望自己是自包含的，这里面luagit起到了一个重要作用，luajit会同时一同被安装，所以需要进行确认

liumiaocn:torch liumiao$ which luajit
    /Users/liumiao/torch/install/bin/luajit
    liumiaocn:torch liumiao$ luajit -v
    LuaJIT 2.1.0-beta1 -- Copyright (C) 2005-2015 Mike Pall. http://luajit.org/
    
     _____              _     
    |_   _|            | |    
      | | ___  _ __ ___| |__  
      | |/ _ \| '__/ __| '_ \ 
      | | (_) | | | (__| | | |
      \_/\___/|_|  \___|_| |_|
    
    liumiaocn:torch liumiao$

使用此版本的luajit进行动作确认

liumiaocn:torch liumiao$ luajit
    LuaJIT 2.1.0-beta1 -- Copyright (C) 2005-2015 Mike Pall. http://luajit.org/
    
     _____              _     
    |_   _|            | |    
      | | ___  _ __ ___| |__  
      | |/ _ \| '__/ __| '_ \ 
      | | (_) | | | (__| | | |
      \_/\___/|_|  \___|_| |_|
    
    JIT: ON SSE2 SSE3 SSE4.1 fold cse dce fwd dse narrow loop abc sink fuse
    th> print "Hello LiuMiao"
    Hello LiuMiao
    th>

可以看到Torch7下的luajit确实很小

liumiaocn:torch liumiao$ which luajit
    /Users/liumiao/torch/install/bin/luajit
    liumiaocn:torch liumiao$ du -k /Users/liumiao/torch/install/bin/luajit
    680	/Users/liumiao/torch/install/bin/luajit
    liumiaocn:torch liumiao$

## 步骤3: 确认luarocks ##

除此之外，luarocks作为Lua的包管理的工具也非常重要，确认其版本以及是否能够进行正常操作，后续会通过luarocks install来安装所需的依赖

liumiaocn:torch liumiao$ luarocks
    LuaRocks 2.3.0, a module deployment system for Lua
    ...省略
    CONFIGURATION
    	Lua version: 5.1
    	Configuration files:
    		System: /Users/liumiao/torch/install/etc/luarocks/config.lua (ok)
    		User  : /Users/liumiao/.luarocks/config-5.1.lua (not found)
    
    	Rocks trees in use: 
    		/Users/liumiao/.luarocks
    		/Users/liumiao/torch/install
    liumiaocn:torch liumiao$ 
    liumiaocn:torch liumiao$ luarocks list nn
    ...省略
    nn
       scm-1 (installed) - /Users/liumiao/torch/install/lib/luarocks/rocks
    nngraph
       scm-1 (installed) - /Users/liumiao/torch/install/lib/luarocks/rocks
    nnx
       0.1-1 (installed) - /Users/liumiao/torch/install/lib/luarocks/rocks
    liumiaocn:torch liumiao$

## 步骤4: 确认th ##

Torch可以通过交互式的th进行操作，确认其是否能够正常进入

liumiaocn:torch liumiao$ th
     
      ______             __   |  Torch7 
     /_  __/__  ________/ /   |  Scientific computing for Lua. 
      / / / _ \/ __/ __/ _ \  |  Type ? for help 
     /_/  \___/_/  \__/_//_/  |  https://github.com/torch 
                              |  http://torch.ch 
    	
    th>

# 总结 #

这篇文章介绍了Torch官方的安装方式，并以MacOS为例进行了memo。

# 参考内容 #

http://torch.ch/docs/getting-started.html

[70]: /images/20221120/cdd0096b067c4a7a8d09b866901bc00e.png
[https_liumiaocn.blog.csdn.net_article_details_80342750]: https://liumiaocn.blog.csdn.net/article/details/80342750