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  <div class="section" id="paddlepaddle-in-docker-containers">
<h1>PaddlePaddle in Docker Containers<a class="headerlink" href="#paddlepaddle-in-docker-containers" title="Permalink to this headline">¶</a></h1>
<p>Docker container is currently the only officially-supported way to
running PaddlePaddle.  This is reasonable as Docker now runs on all
major operating systems including Linux, Mac OS X, and Windows.
Please be aware that you will need to change <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/issues/627">Dockers settings</a> to make full use
of your hardware resource on Mac OS X and Windows.</p>
<div class="section" id="development-using-docker">
<h2>Development Using Docker<a class="headerlink" href="#development-using-docker" title="Permalink to this headline">¶</a></h2>
<p>Developers can work on PaddlePaddle using Docker.  This allows
developers to work on different platforms &#8211; Linux, Mac OS X, and
Windows &#8211; in a consistent way.</p>
<ol class="arabic">
<li><p class="first">Build the Development Environment as a Docker Image</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span>git clone --recursive https://github.com/PaddlePaddle/Paddle
<span class="nb">cd</span> Paddle
docker build -t paddle:dev -f paddle/scripts/docker/Dockerfile .
</pre></div>
</div>
<p>Note that by default <code class="code docutils literal"><span class="pre">docker</span> <span class="pre">build</span></code> wouldn&#8217;t import source
tree into the image and build it.  If we want to do that, we need
to set a build arg:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span>docker build -t paddle:dev -f paddle/scripts/docker/Dockerfile --build-arg <span class="nv">BUILD_AND_INSTALL</span><span class="o">=</span>ON .
</pre></div>
</div>
</li>
<li><p class="first">Run the Development Environment</p>
<p>Once we got the image <code class="code docutils literal"><span class="pre">paddle:dev</span></code>, we can use it to develop
Paddle by mounting the local source code tree into a container that
runs the image:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span>docker run -d -p <span class="m">2202</span>:22 -v <span class="nv">$PWD</span>:/paddle paddle:dev
</pre></div>
</div>
<p>This runs a container of the development environment Docker image
with the local source tree mounted to <code class="code docutils literal"><span class="pre">/paddle</span></code> of the
container.</p>
<p>Note that the default entry-point of <code class="code docutils literal"><span class="pre">paddle:dev</span></code> is
<code class="code docutils literal"><span class="pre">sshd</span></code>, and above <code class="code docutils literal"><span class="pre">docker</span> <span class="pre">run</span></code> commands actually starts
an SSHD server listening on port 2202.  This allows us to log into
this container with:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span>ssh root@localhost -p <span class="m">2202</span>
</pre></div>
</div>
<p>Usually, I run above commands on my Mac.  I can also run them on a
GPU server <code class="code docutils literal"><span class="pre">xxx.yyy.zzz.www</span></code> and ssh from my Mac to it:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span>my-mac$ ssh root@xxx.yyy.zzz.www -p <span class="m">2202</span>
</pre></div>
</div>
</li>
<li><p class="first">Build and Install Using the Development Environment</p>
<p>Once I am in the container, I can use
<code class="code docutils literal"><span class="pre">paddle/scripts/docker/build.sh</span></code> to build, install, and test
Paddle:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span>/paddle/paddle/scripts/docker/build.sh
</pre></div>
</div>
<p>This builds everything about Paddle in <code class="code docutils literal"><span class="pre">/paddle/build</span></code>.  And
we can run unit tests there:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span><span class="nb">cd</span> /paddle/build
ctest
</pre></div>
</div>
</li>
</ol>
</div>
<div class="section" id="cpu-only-and-gpu-images">
<h2>CPU-only and GPU Images<a class="headerlink" href="#cpu-only-and-gpu-images" title="Permalink to this headline">¶</a></h2>
<p>For each version of PaddlePaddle, we release 2 Docker images, a
CPU-only one and a CUDA GPU one.  We do so by configuring
<a class="reference external" href="https://hub.docker.com/r/paddledev/paddle/">dockerhub.com</a>
automatically runs the following commands:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span>docker build -t paddle:cpu -f paddle/scripts/docker/Dockerfile .
docker build -t paddle:gpu -f paddle/scripts/docker/Dockerfile.gpu .
</pre></div>
</div>
<p>To run the CPU-only image as an interactive container:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span>docker run -it --rm paddledev/paddle:cpu-latest /bin/bash
</pre></div>
</div>
<p>or, we can run it as a daemon container</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span>docker run -d -p <span class="m">2202</span>:22 paddledev/paddle:cpu-latest
</pre></div>
</div>
<p>and SSH to this container using password <code class="code docutils literal"><span class="pre">root</span></code>:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span>ssh -p <span class="m">2202</span> root@localhost
</pre></div>
</div>
<p>An advantage of using SSH is that we can connect to PaddlePaddle from
more than one terminals.  For example, one terminal running vi and
another one running Python interpreter.  Another advantage is that we
can run the PaddlePaddle container on a remote server and SSH to it
from a laptop.</p>
<p>Above methods work with the GPU image too &#8211; just please don&#8217;t forget
to install CUDA driver and let Docker knows about it:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span><span class="nb">export</span> <span class="nv">CUDA_SO</span><span class="o">=</span><span class="s2">&quot;</span><span class="k">$(</span><span class="se">\l</span>s /usr/lib64/libcuda* <span class="p">|</span> xargs -I<span class="o">{}</span> <span class="nb">echo</span> <span class="s1">&#39;-v {}:{}&#39;</span><span class="k">)</span><span class="s2"> </span><span class="k">$(</span><span class="se">\l</span>s /usr/lib64/libnvidia* <span class="p">|</span> xargs -I<span class="o">{}</span> <span class="nb">echo</span> <span class="s1">&#39;-v {}:{}&#39;</span><span class="k">)</span><span class="s2">&quot;</span>
<span class="nb">export</span> <span class="nv">DEVICES</span><span class="o">=</span><span class="k">$(</span><span class="se">\l</span>s /dev/nvidia* <span class="p">|</span> xargs -I<span class="o">{}</span> <span class="nb">echo</span> <span class="s1">&#39;--device {}:{}&#39;</span><span class="k">)</span>
docker run <span class="si">${</span><span class="nv">CUDA_SO</span><span class="si">}</span> <span class="si">${</span><span class="nv">DEVICES</span><span class="si">}</span> -it paddledev/paddle:gpu-latest
</pre></div>
</div>
</div>
<div class="section" id="non-avx-images">
<h2>Non-AVX Images<a class="headerlink" href="#non-avx-images" title="Permalink to this headline">¶</a></h2>
<p>Please be aware that the CPU-only and the GPU images both use the AVX
instruction set, but old computers produced before 2008 do not support
AVX.  The following command checks if your Linux computer supports
AVX:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span><span class="k">if</span> cat /proc/cpuinfo <span class="p">|</span> grep -i avx<span class="p">;</span> <span class="k">then</span> <span class="nb">echo</span> Yes<span class="p">;</span> <span class="k">else</span> <span class="nb">echo</span> No<span class="p">;</span> <span class="k">fi</span>
</pre></div>
</div>
<p>If it doesn&#8217;t, we will need to build non-AVX images manually from
source code:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span><span class="nb">cd</span> ~
git clone https://github.com/PaddlePaddle/Paddle.git
<span class="nb">cd</span> Paddle
docker build --build-arg <span class="nv">WITH_AVX</span><span class="o">=</span>OFF -t paddle:cpu-noavx -f paddle/scripts/docker/Dockerfile .
docker build --build-arg <span class="nv">WITH_AVX</span><span class="o">=</span>OFF -t paddle:gpu-noavx -f paddle/scripts/docker/Dockerfile.gpu .
</pre></div>
</div>
</div>
<div class="section" id="documentation">
<h2>Documentation<a class="headerlink" href="#documentation" title="Permalink to this headline">¶</a></h2>
<p>Paddle Docker images include an HTML version of C++ source code
generated using <a class="reference external" href="https://github.com/woboq/woboq_codebrowser">woboq code browser</a>.  This makes it easy
for users to browse and understand the C++ source code.</p>
<p>As long as we give the Paddle Docker container a name, we can run an
additional Nginx Docker container to serve the volume from the Paddle
container:</p>
<div class="highlight-bash"><div class="highlight"><pre><span></span>docker run -d --name paddle-cpu-doc paddle:cpu
docker run -d --volumes-from paddle-cpu-doc -p <span class="m">8088</span>:80 nginx
</pre></div>
</div>
<p>Then we can direct our Web browser to the HTML version of source code
at <a class="reference external" href="http://localhost:8088/paddle/">http://localhost:8088/paddle/</a></p>
</div>
</div>


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