Should I dispose the original model after model.relax()?

Answered

Lorenzo Moreschini

March 19, 2022 16:47

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I have built a model with integer variables in Python.

If at some point I need the relaxed version of the model and I know that I no longer need the original one, can I (or should I) call dispose() on the original one? I.e., is it safe to do as follows?

relaxed_model = original_model.relax()
original_model.dispose()
relaxed_model.optimize()

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  November 16, 2025 23:41

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  Jaromił Najman

  • Gurobi Staff

  March 21, 2022 08:26

  Yes, it is safe. The relax() method produces a copy of the original model. However, it is often best to dispose of all models at the end of the program for better readability unless memory requirements are of very high importance, e.g., when the model is very large.

  Best regards, 
  Jaromił

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