Dynamical timeout

Answered

Frederick Zhang

• June 24, 2019 04:35

This question might sound weird, but the point of "dynamical timeout" is that: my model stops exploring more nodes and returns the sub-optimal value when it has already "stayed" on the same objective value (say) 1 minute

I know we can set the timeout limit before we turn on the model, but I refer to this kind of action as the statical timeout, and that's why I name my question as the dynamical timeout.

Is there any way to do such kind of "dynamical timeout"? 

Thanks a lot!

0

• Official comment

  

  Kostja Siefen

  Gurobi Staff

  • June 28, 2019 08:59

  Absolutely, you can implement this with a callback function. 

  Here is a documentation link for Python: https://www.gurobi.com/documentation/current/refman/py_callbacks.html

  Within the callback, you would have to keep track of the timing and the current progress (see also https://www.gurobi.com/documentation/current/refman/callback_codes.html) . You can then call the terminate() function whenever you want the process to stop.

  There is a callback example for each API in the "examples" folder of your Gurobi installation.

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