 contenteditable="false" data-testid="output_2" style="width: 458px; max-height: 261px;" data-width="428" data-height="18" data-hashorizontaloverflow="false"><div class="textElement">Elapsed time for building tril(K) on serial CPU: 1.295013</div></div></div></div><div class="inlineWrapper outputs"><div  class = 'S12'><span style="white-space: pre;"><span>fprintf(</span><span style="color: rgb(160, 32, 240);">'\tCPU speedup (CPU vs CPU, K vs tril(K)): %f\n'</span><span>,time/time_h);</span></span></div><div 