参考
https://caffe2.ai/docs/tutorials

运行环境

  • OS: debian8_x86_64

学习文档安装

下载教程源码

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git clone --recursive https://github.com/caffe2/tutorials caffe2_tutorials

安装依赖

运行教程，需要一些第三方库，包括 ipython-notebooks 和 matplotlib

如果你是Anaconda用户， 用conda install代替pip install

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pip install -U pip setuptools
pip install \
    graphviz \
    hypothesis \
    ipython \
    jupyter \
    matplotlib \
    notebook \
    pydot \
    python-nvd3 \
    pyyaml \
    requests \
    scikit-image \
    scipy
``` 

一般来说应该没问题  
但是祸不单行我的就报错了  

```sh
ipykernel 4.8.2 has requirement ipython>=4.0.0, but you'll have ipython 2.3.0 which is incompatible.
networkx 2.1 has requirement decorator>=4.1.0, but you'll have decorator 3.4.0 which is incompatible.
ipywidgets 7.2.1 has requirement ipython<6.0.0,>=4.0.0; python_version < "3.3", but you'll have ipython 2.3.0 which is incompatible.

卸载ipython并且把配置文件删除

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apt purge ipython

再次pip 报错

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networkx 2.1 has requirement decorator>=4.1.0, but you'll have decorator 3.4.0 which is incompatible.

卸载decorator

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pip uninstall decorator

再次pip
输出末尾显示自动装好的decorator 4.3.0

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Installing collected packages: decorator
Successfully installed decorator-4.3.0

回到教程

安装zeromq

有些教程用到的包不在pip里面：zeromq

Mac用户运行: brew install unzip zeromq
Ubuntu用户运行 : apt-get install unzip zeromq
Centos用户运行 : yum install unzip zeromq

apt并没有找到zeromq
http://zeromq.org/area:download

deb安装

https://build.opensuse.org/package/binaries/network:messaging:zeromq:release-stable/libzmq/Debian_8.0

编译安装

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wget https://github.com/zeromq/libzmq/releases/download/v4.2.3/zeromq-4.2.3.tar.gz
tar zxvf zeromq-4.2.3.tar.gz
cd zeromq-4.2.3/
./autogen.sh && ./configure && make -j 4
make check && make install && sudo ldconfig

deb安装

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wget http://ftp.halifax.rwth-aachen.de/opensuse/repositories/network:/messaging:/zeromq:/release-stable/Debian_8.0/amd64/libzmq5_4.2.5_amd64.deb
dpkg -i libzmq5_4.2.5_amd64.deb

依赖报错

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dpkg -i libzmq5_4.2.5_amd64.deb 

Selecting previously unselected package libzmq5:amd64.
(Reading database ... 73719 files and directories currently installed.)
Preparing to unpack libzmq5_4.2.5_amd64.deb ...
Unpacking libzmq5:amd64 (4.2.5) ...
dpkg: dependency problems prevent configuration of libzmq5:amd64:
 libzmq5:amd64 depends on libnorm1; however:
  Package libnorm1 is not installed.
 libzmq5:amd64 depends on libpgm-5.1-0 (>= 5.1.116~dfsg); however:
  Package libpgm-5.1-0 is not installed.
 libzmq5:amd64 depends on libsodium13 (>= 0.6.0); however:
  Package libsodium13 is not installed.

dpkg: error processing package libzmq5:amd64 (--install):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 libzmq5:amd64

自动修复依赖
apt -f install
但是还是有个叫libnorm1的包找不到

还是编译安装吧 =。=

然后运行在 caffe2_tutorials 目录中shell 脚本

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./start_ipython_notebook.sh

输出

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root@debian:~/caffe2_tutorials# ./start_ipython_notebook.sh 
[TerminalIPythonApp] WARNING | Subcommand `ipython notebook` is deprecated and will be removed in future versions.
[TerminalIPythonApp] WARNING | You likely want to use `jupyter notebook` in the future
[I 09:15:27.557 NotebookApp] Writing notebook server cookie secret to /root/.local/share/jupyter/runtime/notebook_cookie_secret
[W 09:15:27.589 NotebookApp] WARNING: The notebook server is listening on all IP addresses and not using encryption. This is not recommended.
[C 09:15:27.658 NotebookApp] Running as root is not recommended. Use --allow-root to bypass.

看下这个脚本内容

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root@debian:~/caffe2_tutorials# cat start_ipython_notebook.sh 
#!/usr/bin/env sh
# This script simply starts the ipython notebook and allows all network machines
# to access it.

# Use the following command for very verbose prints.
# GLOG_logtostderr=1 GLOG_v=1 ipython notebook --ip='*'

# Use the following command for a normal run.
ipython notebook --ip='*'

allow root

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ipython notebook --ip='*' --allow-root

然后就启动了notebook server

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root@debian:~/caffe2_tutorials# ipython notebook --ip='*' --allow-root
[TerminalIPythonApp] WARNING | Subcommand `ipython notebook` is deprecated and will be removed in future versions.
[TerminalIPythonApp] WARNING | You likely want to use `jupyter notebook` in the future
[W 09:21:04.119 NotebookApp] WARNING: The notebook server is listening on all IP addresses and not using encryption. This is not recommended.
[I 09:21:04.149 NotebookApp] Serving notebooks from local directory: /root/caffe2_tutorials
[I 09:21:04.149 NotebookApp] 0 active kernels
[I 09:21:04.149 NotebookApp] The Jupyter Notebook is running at:
[I 09:21:04.149 NotebookApp] http://[all ip addresses on your system]:8888/?token=def4b7ebc92506308fd9221242fc47fcbfd2933744a15aa3
[I 09:21:04.149 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 09:21:04.151 NotebookApp] 
    
    Copy/paste this URL into your browser when you connect for the first time,
    to login with a token:
        http://localhost:8888/?token=def4b7ebc92506308fd9221242fc47fcbfd2933744a15aa3

或者你可以运行jupyter notebook,当你在浏览器打开本地jupyter server(默认是http://localhost:8888), 浏览Caffe2的仓库,在caffe2_tutorials 目录中查看教程. 用这种方式打开notebook会启动他们的交互功能，就像运行shell 脚本一样。该脚本具有设置PYTHONPATH环境变量的附加功能。