Time limit

[guimarqu]

Related to #384

[ysu1028]

Hello,

I'm wondering if there is a way to set a time limit for solver (e.g., if "default_optimizer" => CPLEX.Optimizer) when using coluna to solve the MIP problem?

Thank you very much!

Best, Yue

[guimarqu]

Hi,

You can indeed define a time limit for your subsolver using an optimizer_with_attributes from JuMP :

https://github.com/atoptima/Coluna.jl/blob/7a7d72688e3b326d0ad7273b38cd5adb828a9785/test/optimizer_with_attributes_test.jl#L13

These parameters will be applied to all subsolvers.

[ysu1028]

Hi,

You can indeed define a time limit for your subsolver using an optimizer_with_attributes from JuMP :

https://github.com/atoptima/Coluna.jl/blob/7a7d72688e3b326d0ad7273b38cd5adb828a9785/test/optimizer_with_attributes_test.jl#L13

These parameters will be applied to all subsolvers.

Thank you for the reply! Is this setting restrict only the execution time for sub-problem solving or the whole execution time? I think this setting could only restrict the execution time for sub-problem... In fact, I would like to restrict the whole problem solving time, sorry for not being clear. Do you know if there is a way to restrict it?

Best, Yue

[guimarqu]

Yes, it restricts the execution time for each subsolver call. Unfortunately, there is no way to define a time limit on the whole execution of Coluna at the moment. It will be available in the next few months. However, you can define a limit on the number of nodes explored (parameter maxnumnodes in https://atoptima.github.io/Coluna.jl/latest/dev/algorithms/#Coluna.Algorithm.TreeSearchAlgorithm).

[ysu1028]

Yes, it restricts the execution time for each subsolver call. Unfortunately, there is no way to define a time limit on the whole execution of Coluna at the moment. It will be available in the next few months. However, you can define a limit on the number of nodes explored (parameter maxnumnodes in https://atoptima.github.io/Coluna.jl/latest/dev/algorithms/#Coluna.Algorithm.TreeSearchAlgorithm).

Thank you! I'm looking forward to it! For this moment I'll try to define the limit on the number of nodes explored :)

Best, Yue