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<h1>torch.autograd.Function.forward<a class="headerlink" href="#torch-autograd-function-forward" title="Permalink to this headline">¶</a></h1>
<dl class="py method">
<dt id="torch.autograd.Function.forward">
<em class="property"><span class="pre">static</span> </em><code class="sig-prename descclassname"><span class="pre">Function.</span></code><code class="sig-name descname"><span class="pre">forward</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">ctx</span></span></em>, <em class="sig-param"><span class="o"><span class="pre">*</span></span><span class="n"><span class="pre">args</span></span></em>, <em class="sig-param"><span class="o"><span class="pre">**</span></span><span class="n"><span class="pre">kwargs</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/torch/autograd/function.html#Function.forward"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#torch.autograd.Function.forward" title="Permalink to this definition">¶</a></dt>
<dd><p>Performs the operation.</p>
<p>This function is to be overridden by all subclasses.</p>
<p>It must accept a context ctx as the first argument, followed by any
number of arguments (tensors or other types).</p>
<p>The context can be used to store arbitrary data that can be then
retrieved during the backward pass. Tensors should not be stored
directly on <cite>ctx</cite> (though this is not currently enforced for
backward compatibility). Instead, tensors should be saved either with
<code class="xref py py-func docutils literal notranslate"><span class="pre">ctx.save_for_backward()</span></code> if they are intended to be used in
<code class="docutils literal notranslate"><span class="pre">backward</span></code> (equivalently, <code class="docutils literal notranslate"><span class="pre">vjp</span></code>) or <code class="xref py py-func docutils literal notranslate"><span class="pre">ctx.save_for_forward()</span></code>
if they are intended to be used for in <code class="docutils literal notranslate"><span class="pre">jvp</span></code>.</p>
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