Decision Optimization

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Different LP objective values on different configuration machines for same input file

  • 1.  Different LP objective values on different configuration machines for same input file

    Posted 25 days ago
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    Hello Members,

    I am attaching data of LP objective values in each iteration of column generation on different AWS machine configurations. I am solving LP by barrier method without crossover with CPLEX 12.2.0.0 version on windows machines.

    Query - "If I look at the objective values on different configuration machines, it is not coming the same. Is this phenomenon common or not? If it is so what could be the possible reasons for this? I am using the same input file for all the machines."

    Thanks in advance!

    Rajat Mishra



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    Rajat Mishra
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  • 2.  RE: Different LP objective values on different configuration machines for same input file

    Posted 6 days ago
    Hello, this tech note explains when CPLEX will return the same solution or not: https://www.ibm.com/support/pages/note-reproducibility-cplex-runs

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    Vincent Beraudier
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