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<div class="highlight"><pre><span class="lineno">1</span><span></span><span class="kn">import</span> <span class="nn">torch</span>
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<span class="lineno">2</span>
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<span class="lineno">3</span><span class="kn">from</span> <span class="nn">labml.configs</span> <span class="kn">import</span> <span class="n">BaseConfigs</span><span class="p">,</span> <span class="n">hyperparams</span><span class="p">,</span> <span class="n">option</span></pre></div>
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<div class="highlight"><pre><span class="lineno">6</span><span class="k">class</span> <span class="nc">DeviceInfo</span><span class="p">:</span></pre></div>
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<a href='#section-2'>#</a>
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<div class="highlight"><pre><span class="lineno">7</span> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="p">,</span>
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<span class="lineno">8</span> <span class="n">use_cuda</span><span class="p">:</span> <span class="nb">bool</span><span class="p">,</span>
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<span class="lineno">9</span> <span class="n">cuda_device</span><span class="p">:</span> <span class="nb">int</span><span class="p">):</span>
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<span class="lineno">10</span> <span class="bp">self</span><span class="o">.</span><span class="n">use_cuda</span> <span class="o">=</span> <span class="n">use_cuda</span>
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<span class="lineno">11</span> <span class="bp">self</span><span class="o">.</span><span class="n">cuda_device</span> <span class="o">=</span> <span class="n">cuda_device</span>
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<span class="lineno">12</span> <span class="bp">self</span><span class="o">.</span><span class="n">cuda_count</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">cuda</span><span class="o">.</span><span class="n">device_count</span><span class="p">()</span>
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<span class="lineno">13</span>
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<span class="lineno">14</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_cuda</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">use_cuda</span> <span class="ow">and</span> <span class="n">torch</span><span class="o">.</span><span class="n">cuda</span><span class="o">.</span><span class="n">is_available</span><span class="p">()</span>
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<span class="lineno">15</span> <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_cuda</span><span class="p">:</span>
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<span class="lineno">16</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">device</span><span class="p">(</span><span class="s1">'cpu'</span><span class="p">)</span>
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<span class="lineno">17</span> <span class="k">else</span><span class="p">:</span>
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<span class="lineno">18</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">cuda_device</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">cuda_count</span><span class="p">:</span>
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<span class="lineno">19</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">device</span><span class="p">(</span><span class="s1">'cuda'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">cuda_device</span><span class="p">)</span>
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<span class="lineno">20</span> <span class="k">else</span><span class="p">:</span>
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<span class="lineno">21</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">device</span><span class="p">(</span><span class="s1">'cuda'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">cuda_count</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span></pre></div>
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<div class='docs'>
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<a href='#section-3'>#</a>
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<div class='code'>
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<div class="highlight"><pre><span class="lineno">23</span> <span class="k">def</span> <span class="fm">__str__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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<span class="lineno">24</span> <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_cuda</span><span class="p">:</span>
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<span class="lineno">25</span> <span class="k">return</span> <span class="s2">"CPU"</span>
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<span class="lineno">26</span>
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<span class="lineno">27</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">cuda_device</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">cuda_count</span><span class="p">:</span>
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<span class="lineno">28</span> <span class="k">return</span> <span class="sa">f</span><span class="s2">"GPU:</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">cuda_device</span><span class="si">}</span><span class="s2"> - </span><span class="si">{</span><span class="n">torch</span><span class="o">.</span><span class="n">cuda</span><span class="o">.</span><span class="n">get_device_name</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cuda_device</span><span class="p">)</span><span class="si">}</span><span class="s2">"</span>
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<span class="lineno">29</span> <span class="k">else</span><span class="p">:</span>
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<span class="lineno">30</span> <span class="k">return</span> <span class="p">(</span><span class="sa">f</span><span class="s2">"GPU:</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">cuda_count</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="si">}</span><span class="s2">(</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">cuda_device</span><span class="si">}</span><span class="s2">) "</span>
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<span class="lineno">31</span> <span class="sa">f</span><span class="s2">"- </span><span class="si">{</span><span class="n">torch</span><span class="o">.</span><span class="n">cuda</span><span class="o">.</span><span class="n">get_device_name</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cuda_count</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span></pre></div>
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<div class='section' id='section-4'>
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<div class='docs doc-strings'>
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<div class='section-link'>
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<a href='#section-4'>#</a>
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</div>
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<p> This is a configurable module to get a single device to train model on. It can pick up CUDA devices and it will fall back to CPU if they are not available.</p>
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<p>It has other small advantages such as being able to view the actual device name on configurations view of <code class="highlight"><span></span><span class="n">labml</span> <span class="n">app</span> <span class="o"><</span><span class="n">https</span><span class="p">:</span><span class="o">//</span><span class="n">github</span><span class="o">.</span><span class="n">com</span><span class="o">/</span><span class="n">labmlai</span><span class="o">/</span><span class="n">labml</span><span class="o">/</span><span class="n">tree</span><span class="o">/</span><span class="n">master</span><span class="o">/</span><span class="n">app</span><span class="o">></span></code>
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_</p>
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<p>Arguments: cuda_device (int): The CUDA device number. Defaults to <code class="highlight"><span></span></code>
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0<code class="highlight"><span></span></code>
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. use_cuda (bool): Whether to use CUDA devices. Defaults to <code class="highlight"><span></span></code>
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True<code class="highlight"><span></span></code>
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.</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="lineno">34</span><span class="k">class</span> <span class="nc">DeviceConfigs</span><span class="p">(</span><span class="n">BaseConfigs</span><span class="p">):</span></pre></div>
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<div class='section' id='section-5'>
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<div class='docs'>
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<a href='#section-5'>#</a>
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<div class='code'>
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<div class="highlight"><pre><span class="lineno">47</span> <span class="n">cuda_device</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">0</span>
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<span class="lineno">48</span> <span class="n">use_cuda</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span>
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<span class="lineno">49</span>
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<span class="lineno">50</span> <span class="n">device_info</span><span class="p">:</span> <span class="n">DeviceInfo</span>
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<span class="lineno">51</span>
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<span class="lineno">52</span> <span class="n">device</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">device</span></pre></div>
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<div class='section' id='section-6'>
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<div class='docs'>
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<a href='#section-6'>#</a>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="lineno">54</span> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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<span class="lineno">55</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">_primary</span><span class="o">=</span><span class="s1">'device'</span><span class="p">)</span></pre></div>
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</div>
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<div class='section' id='section-7'>
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<div class='docs'>
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<div class='section-link'>
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<a href='#section-7'>#</a>
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<div class='code'>
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<div class="highlight"><pre><span class="lineno">58</span><span class="nd">@option</span><span class="p">(</span><span class="n">DeviceConfigs</span><span class="o">.</span><span class="n">device</span><span class="p">)</span>
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<span class="lineno">59</span><span class="k">def</span> <span class="nf">_device</span><span class="p">(</span><span class="n">c</span><span class="p">:</span> <span class="n">DeviceConfigs</span><span class="p">):</span>
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<span class="lineno">60</span> <span class="k">return</span> <span class="n">c</span><span class="o">.</span><span class="n">device_info</span><span class="o">.</span><span class="n">device</span>
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<span class="lineno">61</span>
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<span class="lineno">62</span>
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<span class="lineno">63</span><span class="n">hyperparams</span><span class="p">(</span><span class="n">DeviceConfigs</span><span class="o">.</span><span class="n">cuda_device</span><span class="p">,</span> <span class="n">DeviceConfigs</span><span class="o">.</span><span class="n">use_cuda</span><span class="p">,</span>
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<span class="lineno">64</span> <span class="n">is_hyperparam</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
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<span class="lineno">65</span>
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<span class="lineno">66</span>
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<span class="lineno">67</span><span class="nd">@option</span><span class="p">(</span><span class="n">DeviceConfigs</span><span class="o">.</span><span class="n">device_info</span><span class="p">)</span>
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<span class="lineno">68</span><span class="k">def</span> <span class="nf">_device_info</span><span class="p">(</span><span class="n">c</span><span class="p">:</span> <span class="n">DeviceConfigs</span><span class="p">):</span>
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<span class="lineno">69</span> <span class="k">return</span> <span class="n">DeviceInfo</span><span class="p">(</span><span class="n">use_cuda</span><span class="o">=</span><span class="n">c</span><span class="o">.</span><span class="n">use_cuda</span><span class="p">,</span>
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<span class="lineno">70</span> <span class="n">cuda_device</span><span class="o">=</span><span class="n">c</span><span class="o">.</span><span class="n">cuda_device</span><span class="p">)</span></pre></div>
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