Decision Optimization

Decision Optimization

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


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Reducing memory consumption for MIP problem solution

  • 1.  Reducing memory consumption for MIP problem solution

    Posted 06/12/09 02:10 AM

    Originally posted by: SystemAdmin


    [Tavs said:]

    Hi,

    I've got [url=http://www.pastey.net/115868l]this[/url] ampl model for a problem with about 3000 Customers and 13000 sellers but I can't have cplex-ampl  solve it because it would require too much memory.
    With 3000 Customers and 7000 sellers it already eats up 89% of available memory (2GB). On the other hand, solving  the 3000 x 7000 instance takes less than 40s.

    I tried activating the 'emphasis memory' option with no result.

    What should I do?

    Perhaps it's the ampl front-end that uses too much memory to parse the model?
    Would passing data through the C API avoid the problem?

    TIA

    Tavs
    #CPLEXOptimizers
    #DecisionOptimization


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