Decision Optimization

Decision Optimization

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


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  • 1.  CPLEX performance

    Posted 08/05/09 05:50 AM

    Originally posted by: SystemAdmin


    [Chim said:]

    Does anyone know how many Floating Point Operations (FLOPS) CPLEX uses to solve a MIP or how to approximate the maximum computational burden that CPLEX might have on my cluster?  My university wants to know the computational requirements of cplex in FLOPS.  I saw some papers from the '90s that stated 5 GigaFLOPS, but nothing more recent.  Any ideas?
    #CPLEXOptimizers
    #DecisionOptimization


  • 2.  Re: CPLEX performance

    Posted 08/06/09 12:14 AM

    Originally posted by: SystemAdmin


    [prubin said:]

    [quote author=Chim link=topic=1323.msg3695#msg3695 date=1249433400]
    Does anyone know how many Floating Point Operations (FLOPS) CPLEX uses to solve a MIP


    Lots.

    [quote author=Chim link=topic=1323.msg3695#msg3695 date=1249433400]
    or how to approximate the maximum computational burden that CPLEX might have on my cluster?


    Doesn't the cluster provide a way to ration CPU cycles?  (Sorry if it's a silly question; I've never used a cluster.)  You can certainly set an execution time limit within CPLEX.

    [quote author=Chim link=topic=1323.msg3695#msg3695 date=1249433400]
    My university wants to know the computational requirements of cplex in FLOPS.   I saw some papers from the '90s that stated 5 GigaFLOPS, but nothing more recent.  Any ideas?


    Total number of floating point operations is obviously going to depend heavily on the problem -- and, while it's generally true that bigger problems tend to eat more CPU cycles, there's no useful formula I know of to predict floating point ops from problem dimensions.

    /Paul
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