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improving the quality of feasible solution

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  • Maliheh Aramon
    Gurobi Staff Gurobi Staff

    Hi Yansong, 

    To speedup the Gurobi performance, you might want to experiment with the parameters below:

    • Cuts: The log file shows that the node throughput is very slow. Two nodes were processed on average per second. It might make sense to shut the Cuts off to increase the number of nodes processed per second. Processing more nodes can boost the probability of reaching the optimal solution faster.
    • Presolve: Intensifying the presolve level by setting it to 2 can result in a tighter model. Solving a tighter model increases the likelihood of having tighter bounds and better incumbents.
    • Heuristics (RINS): Applying heuristics more aggressively by setting appropriate values for these two parameters can be helpful.
    • ConcurrentMIP: This parameter allows to run multiple independent solves in parallel, each with a different parameter setting. Since you have access to a machine with 24 logical threads, this parameter might be helpful.

     

    Best regards,

    Maliheh

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  • yansong bai
    Gurobi-versary
    Conversationalist
    Curious

    Thank you, Maliheh. 

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