Decision Optimization

Decision Optimization

Delivers prescriptive analytics capabilities and decision intelligence to improve decision-making.


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  • 1.  OPL memory leak in L-shaped method

    Posted 08/26/10 11:19 AM

    Originally posted by: SystemAdmin


    I am having problems managing memory as I iterate between my master and sub problems despite using the .end() method. After so many iterations I run out of memory even while using the -deploy option with oplrun. I am using OPL 5.5 on Windows 7 (64 bit). Has anyone experienced similar memory problems while working with master-sub problem formulations?
    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 2.  Re: OPL memory leak in L-shaped method

    Posted 08/27/10 03:15 AM

    Originally posted by: SystemAdmin


    You have to set
    subModel.settings.mainEndEnabled = true;
    

    otherwise the end() has no effect.

    Beside that there are memory leaks in the 5.x versions.
    I experienced the same. To avoid this you should switch to
    the current version.

    Hope this helps.

    Best regards
    Norbert
    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 3.  Re: OPL memory leak in L-shaped method

    Posted 08/27/10 11:53 AM

    Originally posted by: SystemAdmin


    Norbert,

    Thanks for the reply. I actually do have the end() setting enabled. I will try my model in the current version. Thanks again.
    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 4.  Re: OPL memory leak in L-shaped method

    Posted 08/27/10 12:12 PM

    Originally posted by: Laval


    I had some out of memory issues using Windows 7 (64-bit) but when I moved to a new OS (Windows Server 2003), the problem disappear and no more out of memory issue. I used the same script for both Operating systems. Give it a try. More details are available on the post out of memory issue with opl 6.3
    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 5.  Re: OPL memory leak in L-shaped method

    Posted 09/07/10 01:29 PM

    Originally posted by: SystemAdmin


    I upgraded from 5.5 to 6.3 and thats seems to have solved the memory issue. I used the same model file and stayed with Windows 7. Thanks for the help.
    #DecisionOptimization
    #OPLusingCPLEXOptimizer