CODEWITHSUNDEEP
visual-c++cplex
uluoo
uluoo

Reputation: 47

how to “catch” the break signal and return the best solution found so far

I am using Ilog Cplex with Visual C++ 2015 to solve my problem. How can I send a break signal to solver and make it return the best solution found so far?

Upvotes: 1

Views: 57

Answers (1)

Daniel Junglas
Daniel Junglas

Reputation: 5930

I take it, you are using Concert C++. Handling Ctrl-C (or break) is not within the scope of CPLEX.

But there is the IloCplex::Aborter class. You can install a handler for Ctrl-C (see for example here). Then also install an aborter with the IloCplex class and from the handler abort this aborter.

Of course, if your abort signal comes from a different source, you can use the same strategy: register and aborter and invoke its abort() function to abort CPLEX.

After CPLEX has been aborted, the best solution found so far can be queried using getValues() and getObjectiveValue(). These functions always query the best feasible solution found so far, no matter whether it has been proven optimal or not.

Upvotes: 1

Related Questions