Store time to find incumbent

回答済み

Alejandro Arenas

2022年08月18日 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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• 正式なコメント

  

  Simranjit Kaur

  • Gurobi Staff

  2025年11月16日 23:30

  This post is more than three years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum, or try Gurobot, our chatbot interface offering instant, expert-level support.
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  Jaromił Najman

  • Gurobi Staff

  2022年08月18日 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

  2022年08月18日 15:04

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  Thank you again.

  It works perfectly

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