Decision Optimization

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  • 1.  CPLEX Error 1300: Failure to solve multi-objective subproblem.

    Posted 11 days ago

    Hi,

    I am solving a Multi-objective minimization problem. The final status returned by CPLEX is 'JobSolveStatus.UNKNOWN' and this is not helping me find the the root cause of the issue.

    Secondly, what is more surprising to me is if turn off the PRESOLVE via command 'solver.parameters.preprocessing.presolve = 0' the same problem is solved to optimality.

    I was under the impression that PRESOLVE generally don't alter the status of problem but here I see it otherwise. What could be wrong in this situation? Can any one help me?



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    Vikas Garg
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  • 2.  RE: CPLEX Error 1300: Failure to solve multi-objective subproblem.

    Posted 10 days ago

    CPXmultiobjopt failed to solve one of the subproblems in multi-objective optimization.

    Try solving the sub-problems

    See.  https://www.ibm.com/docs/en/icos/20.1.0?topic=optimization-cpxerr-multiobj-subprob-solve



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    [Nzube] [Nzube]
    [Optimisation Research]
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