<p dir="ltr">Be sure to have a 64 bit cbc version also. </p>
<div class="gmail_quote">Em 11/06/2013 04:24, "Aditya Gandhi" <<a href="mailto:agandhi@sapient.com">agandhi@sapient.com</a>> escreveu:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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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.<u></u><u></u></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:<a href="mailto:haroldo.santos@gmail.com" target="_blank">haroldo.santos@gmail.com</a>]
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<b>Sent:</b> Monday, June 10, 2013 8:56 PM<br>
<b>To:</b> Aditya Gandhi<br>
<b>Cc:</b> <a href="mailto:cbc@list.coin-or.org" target="_blank">cbc@list.coin-or.org</a><br>
<b>Subject:</b> Re: [Cbc] bad_allocation error in large MILP<u></u><u></u></span></p>
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<p style="margin-left:.5in">Do you have a 64 bit operating system installed ? If not you would not use all your available memory.
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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" target="_blank">agandhi@sapient.com</a>> escreveu:<u></u><u></u></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<u></u><u></u></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<u></u><u></u></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.<u></u><u></u></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.<u></u><u></u></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<u></u><u></u></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<u></u><u></u></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<u></u><u></u></span></p>
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