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Tuning amount of time spent with warm starts



1 comment

  • Silke Horn
    Gurobi Staff Gurobi Staff

    There is no way to explicitly limit the amount of time spent in this phase, but the StartNodeLimit parameter is indeed what you should be looking at. Its default value is 500 (the default value of SubMIPNodes); so you could experiment with smaller numbers than that. (E.g. start 250 and then further decrease/bisect depending on how it goes.)

    You could also try shutting off MIP start processing entirely by setting StartNodeLimit to -2 since sometimes trying to complete partial MIP starts can take more time than it saves.


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