Store time to find incumbent

Answered

Alejandro Arenas

August 18, 2022 00:51

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Hello everybody.

Now I know that I must use a callback to know when an incumbent was found. Is there any way to store this value?

Thanks a lot!!

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  November 16, 2025 23:30

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• 

  Jaromił Najman

  • Gurobi Staff

  August 18, 2022 08:42

  Hi Alejandro,

  You can define a private variable in the model object and set it in the callback

  def mycallback:
    # ...
    # in callback
    model._incumbenttime = model.cbGet(GRB.Callback.RUNTIME)
  
  # define private variable which can be set in callback
  model._incumbenttime = -1
  model.optimize(mycallback)
  print(model._incumbenttime)

  Best regards, 
  Jaromił

   

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  Alejandro Arenas

  August 18, 2022 15:04

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  Thank you again.

  It works perfectly

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