Decision Optimization

Decision Optimization

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


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  • 1.  importModel procedure much slower in cplex 12.5?

    Posted 01/24/13 05:48 PM

    Originally posted by: SystemAdmin


    Has anyone else noticed that the importModel IloCplex c++ command is much much slower in 12.5 than previous versions?

    thanks!
    #CPLEXOptimizers
    #DecisionOptimization


  • 2.  Re: importModel procedure much slower in cplex 12.5?

    Posted 01/25/13 01:16 AM

    Originally posted by: SystemAdmin


    Hm, that is not intended. What kind of model are you reading (.mps, .lp, .sav)? Is the model packed (.gz, .bz2) or not? What was the previous version you tried?
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  • 3.  Re: importModel procedure much slower in cplex 12.5?

    Posted 01/28/13 10:15 AM

    Originally posted by: SystemAdmin


    I've tried with both .mps and .lp (haven't tried .sav), the model was not packed. The previous versions that worked faster were 12.3 and 12.4.1
    thanks
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    #DecisionOptimization


  • 4.  Re: importModel procedure much slower in cplex 12.5?

    Posted 01/29/13 02:19 AM

    Originally posted by: SystemAdmin


    I have a hard time reproducing this here. What were the import times you observed with 12.3 and 12.4 and what are the times you observe with 12.5?
    Could you attach an example MPS file here or send one to daniel(dot)junglas(at)de(dot)ibm(dot)com.
    How many arguments do you pass to the importModel() function? Only the IloModel reference and the file name or do you use one of the overloads that returns arrays of variables, constraints, etc.?
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    #DecisionOptimization