[Cbc] bad_allocation error in large MILP

[Haroldo Santos]

Be sure to have a 64 bit cbc version also.
Em 11/06/2013 04:24, "Aditya Gandhi" <agandhi at sapient.com> escreveu:

>  Yep. I was on 32 bit version and am now migrating to a 64 bit version.***
> *
>
> ** **
>
> *From:* Haroldo Santos [mailto:haroldo.santos at gmail.com]
> *Sent:* Monday, June 10, 2013 8:56 PM
> *To:* Aditya Gandhi
> *Cc:* cbc at list.coin-or.org
> *Subject:* Re: [Cbc] bad_allocation error in large MILP****
>
> ** **
>
> Do you have a 64 bit operating system installed ? If not you would not use
> all your available memory. ****
>
> Em 10/06/2013 07:09, "Aditya Gandhi" <agandhi at sapient.com> escreveu:****
>
> I am currently using CBC to solve a large MILP****
>
>  ****
>
> The model has ~130K rows, 260K cols, 20K integers (all binary) and ~650K
> elements****
>
>  ****
>
> 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.****
>
>  ****
>
> Any suggestions on what we should do to solve this.****
>
>  ****
>
> FYI.. running it with dualSimplex option yields an integer feasible answer
> in ~ 1.5 hrs****
>
>  ****
>
> Regards****
>
> Aditya****
>
>  ****
>
>  ****
>
>
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>
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