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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Yep. I was on 32 bit version and am now migrating to a 64 bit version.<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>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Haroldo Santos [mailto:haroldo.santos@gmail.com]
<br>
<b>Sent:</b> Monday, June 10, 2013 8:56 PM<br>
<b>To:</b> Aditya Gandhi<br>
<b>Cc:</b> cbc@list.coin-or.org<br>
<b>Subject:</b> Re: [Cbc] bad_allocation error in large MILP<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p style="margin-left:.5in">Do you have a 64 bit operating system installed ? If not you would not use all your available memory.
<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Em 10/06/2013 07:09, "Aditya Gandhi" <<a href="mailto:agandhi@sapient.com">agandhi@sapient.com</a>> escreveu:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I am currently using CBC to solve a large MILP<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">The model has ~130K rows, 260K cols, 20K integers (all binary) and ~650K elements<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">When we try to solve the model using cbc.exe it crashes. Basic exception handling code added to the tool suggests that CBC crashes with a bad_allocation
error suggesting memory issues. the exe gets to about 1.8 Gb when it crashes. We are running this on a box which has 16GB ram and at time of crash had about 50% of memory unused.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Any suggestions on what we should do to solve this.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">FYI.. running it with dualSimplex option yields an integer feasible answer in ~ 1.5 hrs<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Regards<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Aditya<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<br>
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