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| <div class="section" id="nnpack-contrib-installation"> |
| <h1>NNPACK Contrib Installation<a class="headerlink" href="#nnpack-contrib-installation" title="Permalink to this headline">¶</a></h1> |
| <p><a class="reference external" href="https://github.com/Maratyszcza/NNPACK">NNPACK</a> is an acceleration package |
| for neural network computations, which can run on x86-64, ARMv7, or ARM64 architecture CPUs. |
| Using NNPACK, higher-level libraries like _MXNet_ can speed up |
| the execution on multi-core CPU computers, including laptops and mobile devices.</p> |
| <div class="admonition note"> |
| <p class="admonition-title">Note</p> |
| <p>AS TVM already has natively tuned schedules, NNPACK is here mainly for reference and comparison purpose. |
| For regular use prefer native tuned TVM implementation.</p> |
| </div> |
| <p>TVM supports NNPACK for forward propagation (inference only) in convolution, max-pooling, and fully-connected layers. |
| In this document, we give a high level overview of how to use NNPACK with TVM.</p> |
| <div class="section" id="conditions"> |
| <h2>Conditions<a class="headerlink" href="#conditions" title="Permalink to this headline">¶</a></h2> |
| <p>The underlying implementation of NNPACK utilizes several acceleration methods, |
| including fft and winograd. |
| These algorithms work better on some special <cite>batch size</cite>, <cite>kernel size</cite>, and <cite>stride</cite> settings than on other, |
| so depending on the context, not all convolution, max-pooling, or fully-connected layers can be powered by NNPACK. |
| When favorable conditions for running NNPACKS are not met,</p> |
| <p>NNPACK only supports Linux and OS X systems. Windows is not supported at present.</p> |
| </div> |
| <div class="section" id="build-install-nnpack"> |
| <h2>Build/Install NNPACK<a class="headerlink" href="#build-install-nnpack" title="Permalink to this headline">¶</a></h2> |
| <p>If the trained model meets some conditions of using NNPACK, |
| you can build TVM with NNPACK support. |
| Follow these simple steps:</p> |
| <p>build NNPACK shared library with the following commands. TVM will link NNPACK dynamically.</p> |
| <p>Note: The following NNPACK installation instructions have been tested on Ubuntu 16.04.</p> |
| <div class="section" id="build-ninja"> |
| <h3>Build Ninja<a class="headerlink" href="#build-ninja" title="Permalink to this headline">¶</a></h3> |
| <p>NNPACK need a recent version of Ninja. So we need to install ninja from source.</p> |
| <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>git<span class="w"> </span>clone<span class="w"> </span>git://github.com/ninja-build/ninja.git |
| <span class="nb">cd</span><span class="w"> </span>ninja |
| ./configure.py<span class="w"> </span>--bootstrap |
| </pre></div> |
| </div> |
| <p>Set the environment variable PATH to tell bash where to find the ninja executable. For example, assume we cloned ninja on the home directory ~. then we can added the following line in ~/.bashrc.</p> |
| <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="nb">export</span><span class="w"> </span><span class="nv">PATH</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">PATH</span><span class="si">}</span><span class="s2">:~/ninja"</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="build-nnpack"> |
| <h3>Build NNPACK<a class="headerlink" href="#build-nnpack" title="Permalink to this headline">¶</a></h3> |
| <p>The new CMAKE version of NNPACK download <a class="reference external" href="https://github.com/Maratyszcza/PeachPy">Peach</a> and other dependencies alone</p> |
| <p>Note: at least on OS X, running <cite>ninja install</cite> below will overwrite googletest libraries installed in <cite>/usr/local/lib</cite>. If you build googletest again to replace the nnpack copy, be sure to pass <cite>-DBUILD_SHARED_LIBS=ON</cite> to <cite>cmake</cite>.</p> |
| <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>git<span class="w"> </span>clone<span class="w"> </span>--recursive<span class="w"> </span>https://github.com/Maratyszcza/NNPACK.git |
| <span class="nb">cd</span><span class="w"> </span>NNPACK |
| <span class="c1"># Add PIC option in CFLAG and CXXFLAG to build NNPACK shared library</span> |
| sed<span class="w"> </span>-i<span class="w"> </span><span class="s2">"s|gnu99|gnu99 -fPIC|g"</span><span class="w"> </span>CMakeLists.txt |
| sed<span class="w"> </span>-i<span class="w"> </span><span class="s2">"s|gnu++11|gnu++11 -fPIC|g"</span><span class="w"> </span>CMakeLists.txt |
| mkdir<span class="w"> </span>build |
| <span class="nb">cd</span><span class="w"> </span>build |
| <span class="c1"># Generate ninja build rule and add shared library in configuration</span> |
| cmake<span class="w"> </span>-G<span class="w"> </span>Ninja<span class="w"> </span>-D<span class="w"> </span><span class="nv">BUILD_SHARED_LIBS</span><span class="o">=</span>ON<span class="w"> </span>.. |
| ninja |
| sudo<span class="w"> </span>ninja<span class="w"> </span>install |
| |
| <span class="c1"># Add NNPACK lib folder in your ldconfig</span> |
| <span class="nb">echo</span><span class="w"> </span><span class="s2">"/usr/local/lib"</span><span class="w"> </span>><span class="w"> </span>/etc/ld.so.conf.d/nnpack.conf |
| sudo<span class="w"> </span>ldconfig |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="build-tvm-with-nnpack-support"> |
| <h2>Build TVM with NNPACK support<a class="headerlink" href="#build-tvm-with-nnpack-support" title="Permalink to this headline">¶</a></h2> |
| <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>git<span class="w"> </span>clone<span class="w"> </span>--recursive<span class="w"> </span>https://github.com/apache/tvm<span class="w"> </span>tvm |
| </pre></div> |
| </div> |
| <ul class="simple"> |
| <li><p>Set <cite>set(USE_NNPACK ON)</cite> in config.cmake.</p></li> |
| <li><p>Set <cite>NNPACK_PATH</cite> to the $(YOUR_NNPACK_INSTALL_PATH)</p></li> |
| </ul> |
| <p>after configuration use <cite>make</cite> to build TVM</p> |
| <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>make |
| </pre></div> |
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