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<div class="moz-cite-prefix">Yves,<br>
<br>
Difficult to debug this. I have run it a hundred times and got
the same answer each time.<br>
<br>
John<br>
<br>
On 08/02/16 12:11, Yves Touchard wrote:<br>
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<p class="MsoNormal"><span>John,</span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span>I did the changes (two lines in
ClpSimplex.cpp) and there is still determinism problems.</span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span>Yves</span></p>
<p class="MsoNormal"><a moz-do-not-send="true"
name="_MailEndCompose"><span> </span></a></p>
<div>
<div>
<p class="MsoNormal"><b><span>From:</span></b><span>
<a class="moz-txt-link-abbreviated" href="mailto:john.forrest@fastercoin.com">john.forrest@fastercoin.com</a>
[<a class="moz-txt-link-freetext" href="mailto:john.forrest@fastercoin.com">mailto:john.forrest@fastercoin.com</a>]
<br>
<b>Sent:</b> Friday, February 05, 2016 5:33 PM<br>
<b>To:</b> Yves Touchard <a class="moz-txt-link-rfc2396E" href="mailto:ytouchard@gopro.com"><ytouchard@gopro.com></a>;
<a class="moz-txt-link-abbreviated" href="mailto:cbc@list.coin-or.org">cbc@list.coin-or.org</a><br>
<b>Subject:</b> RE: [Cbc] Non Deterministic solution</span></p>
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<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal"><span>Yves,<br>
<br>
My guess is that it is because there are places where
CoinDrand48 is used. <br>
<br>
Most likely is in ClpSimplex.cpp - try changing<br>
<br>
Coindrand48()<br>
<br>
to<br>
<br>
randomNumberGenerator_.randomDouble()</span></p>
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<div>
<p class="MsoNormal"><span> </span></p>
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<div>
<p class="MsoNormal"><span>if that fixes I will check change
in<br>
<br>
<br>
John</span></p>
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<p class="MsoNormal"><span>-------- Original Message
--------<br>
Subject: [Cbc] Non Deterministic solution<br>
From: Yves Touchard <<a moz-do-not-send="true"
href="mailto:ytouchard@gopro.com"><span>ytouchard@gopro.com</span></a>><br>
Date: Thu, February 04, 2016 11:31 am<br>
To: "<a moz-do-not-send="true"
href="mailto:cbc@list.coin-or.org"><span>cbc@list.coin-or.org</span></a>"
<<a moz-do-not-send="true"
href="mailto:cbc@list.coin-or.org"><span>cbc@list.coin-or.org</span></a>></span></p>
<div>
<div>
<p class="MsoNormal"><span lang="FR">Hello,</span><span></span></p>
</div>
<div>
<p class="MsoNormal"><span lang="FR"> </span><span></span></p>
</div>
<div>
<p class="MsoNormal"><span>I have just a got a
determinism problem with a constraint file:</span></p>
</div>
<div>
<p class="MsoNormal"><span> </span></p>
</div>
<div>
<p class="MsoNormal"><span>You will find at
<a moz-do-not-send="true"
href="https://www.dropbox.com/s/uzbmgj48kvtd5yj/pb.tar.gz?dl=0"><u><span>https://www.dropbox.com/s/uzbmgj48kvtd5yj/pb.tar.gz?dl=0</span></u></a>,
a tar file containing five files:</span></p>
</div>
<div>
<p class="MsoNormal"><span>·</span><span>
</span><span>pb.lp is the constraint file.</span></p>
</div>
<div>
<p class="MsoNormal"><span>·</span><span>
</span><span>pbTriv.sol is a solution file of the
trivial problem (same problem with relaxed
constraints) used for mipstart.</span></p>
</div>
<div>
<p class="MsoNormal"><span>·</span><span>
</span><span>pb.prio is the priority file.</span></p>
</div>
<div>
<p class="MsoNormal"><span>·</span><span>
</span><span>pbCmd1.sol is the most frequent solution
provided by coin.</span></p>
</div>
<div>
<p class="MsoNormal"><span>·</span><span>
</span><span>pbCmd1Alt.sol is the alternative solution
(not easy to catch it…).</span></p>
</div>
<div>
<p class="MsoNormal"><span> </span></p>
</div>
<div>
<p class="MsoNormal"><span>Command line is:</span></p>
</div>
<div>
<p class="MsoNormal"><span>bin/cbc pb.lp threads 104
ratio 0.05 mipstart pbTriv.sol priority pb.prio
divingP on divingV on divesolves 301 multiple 4
branch printingOptions normal solution pb.sol</span></p>
</div>
<div>
<p class="MsoNormal"><span>Cbc coin is 2.9.7 rev:2232
compiled with gcc 4.9.0</span></p>
</div>
<div>
<p class="MsoNormal"><span> </span></p>
</div>
<div>
<p class="MsoNormal"><span>Could you have a look on it,
please?</span></p>
</div>
<div>
<p class="MsoNormal"><span> </span></p>
</div>
<div>
<p class="MsoNormal"><span>Thanks</span></p>
</div>
<div>
<p class="MsoNormal"><span> </span></p>
</div>
<div>
<p class="MsoNormal"><span>Yves</span></p>
</div>
<div>
<p class="MsoNormal"><span> </span></p>
</div>
</div>
<div class="MsoNormal"><span>
<hr width="100%">
</span></div>
<p class="MsoNormal"><span>_______________________________________________<br>
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href="mailto:Cbc@list.coin-or.org"><u><span>Cbc@list.coin-or.org</span></u></a><br>
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