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<h1 class="post-title">OSX Setup</h1>
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<h1 id="installing-mxnet-from-source-on-os-x-mac">Installing MXNet from source on OS X (Mac)</h1>
<p>The following installation instructions are for building MXNet from source. For
instructions to build MXNet from source on other platforms, see the general
<a href="build_from_source">Build From Source guide</a>.</p>
<p>Instead of building from source, you can install a binary version of MXNet. For
that, please follow the information at <a href="get_started">Get Started</a>.</p>
<p>Building MXNet from source is a two-step process:</p>
<ol>
<li>Build the shared library from the MXNet C++ source code.</li>
<li>(optional) Install the supported language-specific packages for MXNet.</li>
</ol>
<p>If you plan to build with GPU, you need to set up the environment for CUDA and
cuDNN. Please follow the <a href="https://docs.nvidia.com/cuda/cuda-installation-guide-mac-os-x/index.html">NVIDIA CUDA Installation Guide for Mac OS
X</a> and
<a href="https://docs.nvidia.com/deeplearning/sdk/cudnn-install/index.html#install-mac">cuDNN Installation
Guide</a>.
Note that CUDA stopped supporting macOS in 2019 and future versions of CUDA may
not support macOS.</p>
<h2 id="contents">Contents</h2>
<ul>
<li><a href="#build-mxnet-from-source">Build the MXNet shared library from source</a></li>
<li><a href="#installing-language-packages-for-mxnet">Install Language Packages</a>
<ul>
<li><a href="#install-the-mxnet-package-for-r">R</a></li>
<li><a href="#install-the-mxnet-package-for-julia">Julia</a></li>
<li><a href="#install-the-mxnet-package-for-scala">Scala</a></li>
<li><a href="#install-the-mxnet-package-for-java">Java</a></li>
<li><a href="#install-the-mxnet-package-for-perl">Perl</a></li>
<li><a href="#contributions">Contributions</a></li>
<li><a href="#next-steps">Next Steps</a></li>
</ul></li>
</ul>
<p><hr></p>
<h2 id="build-the-mxnet-shared-library-from-source">Build the MXNet shared library from source</h2>
<p>On OS X, you need the following dependencies:</p>
<p><strong>Step 1:</strong> Install prerequisite packages.</p>
<div class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="c"># Install OS X Developer Tools</span>
xcode-select <span class="nt">--install</span>
<span class="c"># Install Homebrew</span>
/usr/bin/ruby <span class="nt">-e</span> <span class="s2">"</span><span class="si">$(</span>curl <span class="nt">-fsSL</span> https://raw.githubusercontent.com/Homebrew/install/master/install<span class="si">)</span><span class="s2">"</span>
<span class="c"># Install dependencies</span>
brew <span class="nb">install </span>cmake ninja ccache opencv
</code></pre></div>
<p><code>opencv</code> is an optional dependency. You can delete it from above <code>brew install</code>
line and build MXNet without OpenCV support by setting <code>USE_OPENCV</code> to <code>OFF</code> in
the configuration file described below.</p>
<p><strong>Step 2:</strong> Download MXNet sources and configure</p>
<p>Clone the repository:</p>
<div class="highlight"><pre><code class="language-bash" data-lang="bash">git clone <span class="nt">--recursive</span> https://github.com/apache/mxnet.git mxnet
<span class="nb">cd </span>mxnet
<span class="nb">cp </span>config/darwin.cmake config.cmake
</code></pre></div>
<p>Please edit the config.cmake file based on your needs. The file contains a
series of <code>set(name value CACHE TYPE &quot;Description&quot;)</code> entries. For example, to
build without Cuda, change <code>set(USE_CUDA ON CACHE TYPE &quot;Build with CUDA
support&quot;)</code> to <code>set(USE_CUDA OFF CACHE TYPE &quot;Build with CUDA support&quot;)</code>.</p>
<p>For a GPU-enabled build make sure you have installed the <a href="#cuda-dependencies">CUDA dependencies
first</a>). When building a GPU-enabled build on a machine
without GPU, MXNet build can&#39;t autodetect your GPU architecture and will target
all available GPU architectures. Please set the <code>MXNET_CUDA_ARCH</code> variable in
<code>config.cmake</code> to your desired cuda architecture to speed up the build.</p>
<p>To (optionally) build with MKL math library, please install MKL first based on
the guide in <a href="build_from_source#math-library-selection">Math Library Selection</a>.</p>
<p><strong>Step 3:</strong> Build MXNet core shared library.</p>
<div class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="nb">rm</span> <span class="nt">-rf</span> build
<span class="nb">mkdir</span> <span class="nt">-p</span> build <span class="o">&amp;&amp;</span> <span class="nb">cd </span>build
cmake ..
cmake <span class="nt">--build</span> <span class="nb">.</span>
</code></pre></div>
<p>Specify <code>cmake --build . --parallel N</code> to set the number of parallel compilation
jobs. Default is derived from CPUs available.</p>
<p>After a successful build, you will find the <code>libmxnet.dylib</code> in the <code>build</code>
folder in your MXNet project root. <code>libmxnet.dylib</code> is required to install
language bindings described in the next section.</p>
<p><hr></p>
<h2 id="installing-language-packages-for-mxnet">Installing Language Packages for MXNet</h2>
<p>After you have installed the MXNet core library. You may install MXNet interface
packages for the programming language of your choice:
- <a href="#install-mxnet-for-python">Python</a>
- <a href="#install-the-mxnet-package-for-c&plus;&plus;">C++</a>
- <a href="#install-the-mxnet-package-for-clojure">Clojure</a>
- <a href="#install-the-mxnet-package-for-julia">Julia</a>
- <a href="#install-the-mxnet-package-for-perl">Perl</a>
- <a href="#install-the-mxnet-package-for-r">R</a>
- <a href="#install-the-mxnet-package-for-scala">Scala</a>
- <a href="#install-the-mxnet-package-for-java">Java</a></p>
<p><hr></p>
<h3 id="install-mxnet-for-python">Install MXNet for Python</h3>
<p>To install the MXNet Python binding navigate to the root of the MXNet folder then run the following:</p>
<div class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="nb">cd </span>python
pip <span class="nb">install</span> <span class="nt">--user</span> <span class="nt">-e</span> <span class="nb">.</span>
</code></pre></div>
<p>Note that the <code>-e</code> flag is optional. It is equivalent to <code>--editable</code> and means
that if you edit the source files, these changes will be reflected in the
package installed.</p>
<h3 id="install-the-mxnet-package-for-c">Install the MXNet Package for C++</h3>
<p>Refer to the <a href="c_plus_plus">C++ Package setup guide</a>.
<hr></p>
<h3 id="install-the-mxnet-package-for-clojure">Install the MXNet Package for Clojure</h3>
<p>Refer to the <a href="https://github.com/apache/mxnet/tree/master/contrib/clojure-package">Clojure setup guide</a>.
<hr></p>
<h3 id="install-the-mxnet-package-for-r">Install the MXNet Package for R</h3>
<p>Run the following commands to install the MXNet dependencies and build the MXNet
R package.</p>
<div class="highlight"><pre><code class="language-r" data-lang="r"><span class="w"> </span><span class="n">Rscript</span><span class="w"> </span><span class="o">-</span><span class="n">e</span><span class="w"> </span><span class="s2">"install.packages('devtools', repo = 'https://cran.rstudio.com')"</span><span class="w">
</span></code></pre></div><div class="highlight"><pre><code class="language-bash" data-lang="bash"> <span class="nb">cd </span>R-package
Rscript <span class="nt">-e</span> <span class="s2">"library(devtools); library(methods); options(repos=c(CRAN='https://cran.rstudio.com')); install_deps(dependencies = TRUE)"</span>
<span class="nb">cd</span> ..
make <span class="nt">-f</span> R-package/Makefile rpkg
</code></pre></div>
<h2 id="install-the-mxnet-package-for-julia">Install the MXNet Package for Julia</h2>
<p>The MXNet package for Julia is hosted in a separate repository, MXNet.jl, which is available on <a href="https://github.com/dmlc/MXNet.jl">GitHub</a>. To use Julia binding it with an existing libmxnet installation, set the <code>MXNET_HOME</code> environment variable by running the following command:</p>
<div class="highlight"><pre><code class="language-bash" data-lang="bash"> <span class="nb">export </span><span class="nv">MXNET_HOME</span><span class="o">=</span>/&lt;path to&gt;/libmxnet
</code></pre></div>
<p>The path to the existing libmxnet installation should be the root directory of libmxnet. In other words, you should be able to find the <code>libmxnet.so</code> file at <code>$MXNET_HOME/lib</code>. For example, if the root directory of libmxnet is <code>~</code>, you would run the following command:</p>
<div class="highlight"><pre><code class="language-bash" data-lang="bash"> <span class="nb">export </span><span class="nv">MXNET_HOME</span><span class="o">=</span>/~/libmxnet
</code></pre></div>
<p>You might want to add this command to your <code>~/.bashrc</code> file. If you do, you can install the Julia package in the Julia console using the following command:</p>
<div class="highlight"><pre><code class="language-julia" data-lang="julia"> <span class="n">Pkg</span><span class="o">.</span><span class="n">add</span><span class="x">(</span><span class="s">"MXNet"</span><span class="x">)</span>
</code></pre></div>
<p>For more details about installing and using MXNet with Julia, see the <a href="/versions/1.9.1/api/julia">MXNet Julia documentation</a>.</p>
<h3 id="install-the-mxnet-package-for-scala">Install the MXNet Package for Scala</h3>
<p>To use the MXNet-Scala package, you can acquire the Maven package as a dependency.</p>
<p>Further information is in the <a href="scala_setup">MXNet-Scala Setup Instructions</a>.</p>
<p>If you use IntelliJ or a similar IDE, you may want to follow the <a href="/versions/1.9.1/api/scala/docs/tutorials/mxnet_scala_on_intellij">MXNet-Scala on IntelliJ tutorial</a> instead.</p>
<h3 id="install-the-mxnet-package-for-perl">Install the MXNet Package for Perl</h3>
<p>Before you build MXNet for Perl from source code, you must complete <a href="#build-the-shared-library">building the shared library</a>.
After you build the shared library, run the following command from the MXNet source root directory to build the MXNet Perl package:</p>
<div class="highlight"><pre><code class="language-bash" data-lang="bash"> brew <span class="nb">install </span>swig
<span class="nb">sudo </span>sh <span class="nt">-c</span> <span class="s1">'curl -L https://cpanmin.us | perl - App::cpanminus'</span>
<span class="nb">sudo </span>cpanm <span class="nt">-q</span> <span class="nt">-n</span> PDL Mouse Function::Parameters Hash::Ordered PDL::CCS
<span class="nv">MXNET_HOME</span><span class="o">=</span><span class="k">${</span><span class="nv">PWD</span><span class="k">}</span>
<span class="nb">export </span><span class="nv">PERL5LIB</span><span class="o">=</span><span class="k">${</span><span class="nv">HOME</span><span class="k">}</span>/perl5/lib/perl5
<span class="nb">cd</span> <span class="k">${</span><span class="nv">MXNET_HOME</span><span class="k">}</span>/perl-package/AI-MXNetCAPI/
perl Makefile.PL <span class="nv">INSTALL_BASE</span><span class="o">=</span><span class="k">${</span><span class="nv">HOME</span><span class="k">}</span>/perl5
make
install_name_tool <span class="nt">-change</span> lib/libmxnet.so <span class="se">\</span>
<span class="k">${</span><span class="nv">MXNET_HOME</span><span class="k">}</span>/lib/libmxnet.so <span class="se">\</span>
blib/arch/auto/AI/MXNetCAPI/MXNetCAPI.bundle
make <span class="nb">install
cd</span> <span class="k">${</span><span class="nv">MXNET_HOME</span><span class="k">}</span>/perl-package/AI-NNVMCAPI/
perl Makefile.PL <span class="nv">INSTALL_BASE</span><span class="o">=</span><span class="k">${</span><span class="nv">HOME</span><span class="k">}</span>/perl5
make
install_name_tool <span class="nt">-change</span> lib/libmxnet.so <span class="se">\</span>
<span class="k">${</span><span class="nv">MXNET_HOME</span><span class="k">}</span>/lib/libmxnet.so <span class="se">\</span>
blib/arch/auto/AI/NNVMCAPI/NNVMCAPI.bundle
make <span class="nb">install
cd</span> <span class="k">${</span><span class="nv">MXNET_HOME</span><span class="k">}</span>/perl-package/AI-MXNet/
perl Makefile.PL <span class="nv">INSTALL_BASE</span><span class="o">=</span><span class="k">${</span><span class="nv">HOME</span><span class="k">}</span>/perl5
make <span class="nb">install</span>
</code></pre></div>
<h2 id="contributions">Contributions</h2>
<p>You are more than welcome to contribute easy installation scripts for other operating systems and programming languages.
See the <a href="/versions/1.9.1/community/contribute">community contributions page</a> for further information.</p>
<h2 id="next-steps">Next Steps</h2>
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