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<div class="section" id="module-torch.distributed.elastic.multiprocessing.subprocess_handler">
<span id="subprocess-handling"></span><span id="elastic-subprocess-handler-api"></span><h1>Subprocess Handling<a class="headerlink" href="#module-torch.distributed.elastic.multiprocessing.subprocess_handler" title="Permalink to this heading">¶</a></h1>
<span class="target" id="module-torch.distributed.elastic.multiprocessing.subprocess_handler.subprocess_handler"></span><span class="target" id="module-torch.distributed.elastic.multiprocessing.subprocess_handler.handlers"></span><div class="section" id="retrieve-subprocesshandler">
<h2>Retrieve SubprocessHandler<a class="headerlink" href="#retrieve-subprocesshandler" title="Permalink to this heading">¶</a></h2>
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<dt class="sig sig-object py" id="torch.distributed.elastic.multiprocessing.subprocess_handler.handlers.get_subprocess_handler">
<span class="sig-prename descclassname"><span class="pre">torch.distributed.elastic.multiprocessing.subprocess_handler.handlers.</span></span><span class="sig-name descname"><span class="pre">get_subprocess_handler</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">entrypoint</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">args</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">env</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">stdout</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">stderr</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">local_rank_id</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/torch/distributed/elastic/multiprocessing/subprocess_handler/handlers.html#get_subprocess_handler"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="reference external" href="https://github.com/pytorch/pytorch/blob/v2.6.0/torch/distributed/elastic/multiprocessing/subprocess_handler/handlers.py#L19"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#torch.distributed.elastic.multiprocessing.subprocess_handler.handlers.get_subprocess_handler" title="Permalink to this definition">¶</a></dt>
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<h2>SubprocessHandler<a class="headerlink" href="#subprocesshandler" title="Permalink to this heading">¶</a></h2>
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<dt class="sig sig-object py" id="torch.distributed.elastic.multiprocessing.subprocess_handler.subprocess_handler.SubprocessHandler">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">torch.distributed.elastic.multiprocessing.subprocess_handler.subprocess_handler.</span></span><span class="sig-name descname"><span class="pre">SubprocessHandler</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">entrypoint</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">args</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">env</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">stdout</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">stderr</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">local_rank_id</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/torch/distributed/elastic/multiprocessing/subprocess_handler/subprocess_handler.html#SubprocessHandler"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="reference external" href="https://github.com/pytorch/pytorch/blob/v2.6.0/torch/distributed/elastic/multiprocessing/subprocess_handler/subprocess_handler.py#L28"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#torch.distributed.elastic.multiprocessing.subprocess_handler.subprocess_handler.SubprocessHandler" title="Permalink to this definition">¶</a></dt>
<dd><p>Convenience wrapper around python’s <code class="docutils literal notranslate"><span class="pre">subprocess.Popen</span></code>. Keeps track of
meta-objects associated to the process (e.g. stdout and stderr redirect fds).</p>
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