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<div>Hello,</div><div><br></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>I did tests using CBC (Cbc-2.7.5) and openMP to solve several problems (scenarios) in parallel. </div><div><br></div><div>I did it using both windows (Visual Studio 2010) and Linux and it was possible because of the great "recipes" that you give in your page, thank you for that. And It works properly but I found something odd with the internal CBC timer. I measured the time taken by solving N problems with M Cores (threads) with time.h routines, everithing it's nice when I use one core (or thread) but gets strange if M>1, look the table:</div><div><br></div><div>M=N time.h CBC intenal timers</div><div>---------------------------------</div><div>1<span class="Apple-tab-span" style="white-space:pre"> </span>57s<span class="Apple-tab-span" style="white-space:pre"> </span>54s</div><div>2<span class="Apple-tab-span" style="white-space:pre"> </span>61s<span class="Apple-tab-span" style="white-space:pre"> </span>110.79s,112.92s (two problems in parallel)</div><div>3<span class="Apple-tab-span" style="white-space:pre"> </span>61s<span class="Apple-tab-span" style="white-space:pre"> </span>166s,172s,173s</div><div>4 <span class="Apple-tab-span" style="white-space:pre"> </span>62s<span class="Apple-tab-span" style="white-space:pre"> </span>273s,239s,239s,240s</div><div>5<span class="Apple-tab-span" style="white-space:pre"> </span>91s<span class="Apple-tab-span" style="white-space:pre"> </span>324s, ..., 369s</div><div>...</div><div>7<span class="Apple-tab-span" style="white-space:pre"> </span>129s <span class="Apple-tab-span" style="white-space:pre"> </span>763.1s,771s, ..., 798s</div><div><br></div><div>Is It CBC time "correct"? What's the meaning? Why is It happening like that?</div><div><br></div><div>regards</div><div><br></div><div>David Ibarra</div><div><br></div> </div></body>
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