Xpress Mosel
Invoking the Tuner from within a Mosel model is as simple as adding the XPRS_TUNE flag to any call to minimize or maximize. For example, a MIP model with objective function myObjective using Barrier for the initial relaxation can be tuned by calling:
minimize(XPRS_TUNE+XPRS_BAR, myObjective)
The outcome of the tuning session will be printed in the standard output log. After tuning the model, the Optimizer will perform a final solve with the discovered control parameters fixed. Model execution can therefore continue as normal, and this way, it is possible to tune a specific solve within a model that involves multiple, iterative solves.
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