Allow retrieval of best solution found as yet while allowing the optimization to keep running

回答済み

Santanu Banerjee

2024年09月17日 03:15

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While running a very large model, I am interested to know the best solution found as yet, as the next solution could be found 5-7 hours later...

Therefore it would be great if a variable dump happens after say an hour (this time could be a toggleable Gurobi Parameter), so that when the optimization is run, it would update the best-found values of the variables (i.e. of the best feasible solution found as yet) while the optimization continues.

Apart from real-time benefits, this will help understand how the solution is improving after say 5 hrs -vs- say 10 hours...

関連

• Solutions

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  Simranjit Kaur

  • Gurobi Staff

  2024年09月17日 03:27

  Hi Santanu,

  You can use Gurobi's Callback feature to retrieve solutions as they are found during optimization. Specifically, you can use the MIPSOL callback, which is triggered whenever a new incumbent is found during the run. Please have a look at our Python example callback.py for details on how to use Gurobi callbacks.

  Best regards,
  Simran 

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  Riley Clement

  • Gurobi Staff

  2024年09月17日 10:52

  SolFiles is also an option - Riley

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