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Should I get the same optimal solution when the initial point is different?

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  • Maliheh Aramon
    Gurobi Staff Gurobi Staff

    Hi Arezoo, 

    If you are solving the exact same model with the exact same input data, starting from different initial solutions should not change the optimal solution. Depending on the parameters used, the solution path taken to prove optimality might vary. 

    Strange solver results such as reaching different optimal solutions  by just using different initial solutions might be a sign of having a model with numerical issues. You can follow the steps outlined in our documentation of Does my model have numerical issues? to determine whether your model has numerical issues or not.

     

    Best regards,

    Maliheh

     

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