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Hi,<div><br></div><div>there are several things that can cause this:</div><div><br></div><div><ul><li>different solvers version,</li><li>solving is a complex task: <span style="font-size: 10pt; ">presolve (cuting planes, heuristics, ...) and then b</span><span style="font-size: 10pt; ">ranch and bound (cut). If you omit the first part or you do not do exactly the same steps result could be different.</span></li></ul><div><br></div>Did you try to solve using CBC CLI (stand alone executable) ?</div><div><br></div><div>Regards<br><br><div><div id="SkyDrivePlaceholder"></div><hr id="stopSpelling">Date: Tue, 9 Oct 2012 12:16:49 +0300<br>From: chtsolak@gmail.com<br>To: cbc@list.coin-or.org<br>Subject: [Cbc] solving time in C++ >> time in Gams<br><br>
Hi all again,<br>
<br>
I have 1 question for you, if i solve it, i won't bother you again
<span class="ecxmoz-smiley-s4"><span> :-P </span></span><br>
<br>
I am using cbc in order to make an executable via MS visual studio
which solves a model.<br>
In order to solve it, takes 60 mins<br>
<br>
I have made the same problem with GAMS and solved it in 30 secs, 120
times faster!!<br>
<br>
Is it because of an error in modeling or due to the different
interface? (exe-GAMS)<br>
<br>
Why is there this enormous difference?<br>
<br>
<br>
Thank you in advance.<i><small><i><small><br>
</small></i></small></i><br>
<i><small><i><small><br>
</small></i><br>
</small></i>
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