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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">John,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I did the changes (two lines in ClpSimplex.cpp) and there is still determinism problems.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Yves<o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></a></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> john.forrest@fastercoin.com [mailto:john.forrest@fastercoin.com]
<br>
<b>Sent:</b> Friday, February 05, 2016 5:33 PM<br>
<b>To:</b> Yves Touchard <ytouchard@gopro.com>; cbc@list.coin-or.org<br>
<b>Subject:</b> RE: [Cbc] Non Deterministic solution<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">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()<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">if that fixes I will check change in<br>
<br>
<br>
John<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">-------- Original Message --------<br>
Subject: [Cbc] Non Deterministic solution<br>
From: Yves Touchard <<a href="mailto:ytouchard@gopro.com"><span style="color:windowtext">ytouchard@gopro.com</span></a>><br>
Date: Thu, February 04, 2016 11:31 am<br>
To: "<a href="mailto:cbc@list.coin-or.org"><span style="color:windowtext">cbc@list.coin-or.org</span></a>" <<a href="mailto:cbc@list.coin-or.org"><span style="color:windowtext">cbc@list.coin-or.org</span></a>><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="FR" style="font-family:"Verdana",sans-serif;color:black">Hello,</span><span style="font-family:"Verdana",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="FR" style="font-family:"Verdana",sans-serif;color:black"> </span><span style="font-family:"Verdana",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black">I have just a got a determinism problem with a constraint file:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black">You will find at
<a href="https://www.dropbox.com/s/uzbmgj48kvtd5yj/pb.tar.gz?dl=0"><u><span style="color:blue">https://www.dropbox.com/s/uzbmgj48kvtd5yj/pb.tar.gz?dl=0</span></u></a>, a tar file containing five files:<o:p></o:p></span></p>
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<p class="MsoNormal" style="text-indent:-.25in"><span style="font-size:10.0pt;font-family:Symbol;color:black">·</span><span style="font-size:7.0pt;color:black">
</span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">pb.lp is the constraint file.<o:p></o:p></span></p>
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<p class="MsoNormal" style="text-indent:-.25in"><span style="font-size:10.0pt;font-family:Symbol;color:black">·</span><span style="font-size:7.0pt;color:black">
</span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">pbTriv.sol is a solution file of the trivial problem (same problem with relaxed constraints) used for mipstart.<o:p></o:p></span></p>
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<p class="MsoNormal" style="text-indent:-.25in"><span style="font-size:10.0pt;font-family:Symbol;color:black">·</span><span style="font-size:7.0pt;color:black">
</span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">pb.prio is the priority file.<o:p></o:p></span></p>
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<p class="MsoNormal" style="text-indent:-.25in"><span style="font-size:10.0pt;font-family:Symbol;color:black">·</span><span style="font-size:7.0pt;color:black">
</span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">pbCmd1.sol is the most frequent solution provided by coin.<o:p></o:p></span></p>
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<p class="MsoNormal" style="text-indent:-.25in"><span style="font-size:10.0pt;font-family:Symbol;color:black">·</span><span style="font-size:7.0pt;color:black">
</span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">pbCmd1Alt.sol is the alternative solution (not easy to catch it…).<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black">Command line is:<o:p></o:p></span></p>
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<p class="MsoNormal" style="text-indent:.5in"><span style="font-family:"Verdana",sans-serif;color:black">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<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black">Cbc coin is 2.9.7 rev:2232 compiled with gcc 4.9.0<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black">Could you have a look on it, please?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black">Thanks<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black">Yves<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">_______________________________________________<br>
Cbc mailing list<br>
<a href="mailto:Cbc@list.coin-or.org"><u><span style="color:blue">Cbc@list.coin-or.org</span></u></a><br>
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