Free model after interrupt (ctrl-c)

回答済み

jake roth

2023年08月17日 14:45

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I am using julia, so my question might be more appropriate for the Gurobi.jl folks, but I was hoping to check here first to see if something is possible.

 

I have an optimization `model` that is currently getting optimized with `GRBoptimize(model)`. Partway through, an exception occurs (in my case, I interrupt the optimizer with ctrl-c). Similar to this post and this post, I would like to free the Gurobi memory with `GRBfreemodel(model)`. I have a try-catch block that should free the model if any exception occurs:

try
  err=GRBoptimize(model);
catch
  GRBterminate(model);
  err=GRBfreemodel(model);
end

but the code runs, I receive an error message coded 10017: OPTIMIZATION_IN_PROGRESS.

 

My question is: is there any way to halt the optimization and free the model for an "in-progress" optimization model?

 

Thanks,

Jake

関連

• Error
• Termination

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• 正式なコメント

  

  Simranjit Kaur

  • Gurobi Staff

  2026年11月13日 01:39

  This post is more than two 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

  2023年08月21日 08:27

  Hi Jake,

  I am not a Julia expert but I think that the Knowledge Base article How do I terminate Gurobi with SIGKILL? might give you an idea of how to handle the \(\texttt{GRBterminate}\) call properly. The important thing to know is that the terminate call may take a while to process the information and terminate all threads. This is what you need to capture and wait for before freeing the model.

  I hope this helps.

  Best regards, 
  Jaromił

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  jake roth

  2023年08月23日 02:14

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  Ahh, thank you for pointing out the waiting requirement!

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