tch</span> <span class="o">=</span> <span class="n">stack_batch</span><span class="p">(</span><span class="n">batch</span><span class="p">)</span>
        <span class="n">output</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="p">(</span><span class="n">batch</span><span class="p">,</span> <span class="n">progress</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">progress</span><span c