fastest way to find first integer solution

[William Vitari]

What parameters can i modify to make gurobi find an integer solution in the fastest way??

I don't care about the quality of the solution or if the solution is very "far" from the continuous relaxation

[Daniel Espinoza]

In MIP is always hard to make general predictions, but if you want to find feasible solutions quickly I would suggest 

1.- playing with all heuristics settings,

2.- Set the gap criteria to 100% or more, or change the limit of integer solutions to just one

Parameters are described here

http://www.gurobi.com/documentation/6.5/refman/parameters.html

Best,

Daniel

[Tim Chippington Derrick]

Just as a general comment, have you considered using a hand-crafted heuristic to create an initial solution (e.g. a simple greedy heuristic) that can then be fed into the solver as a starting solution candidate. We have found this approach can be very useful for some large problems.

Tim

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Dr Tim Chippington Derrick

Chippington Derrick Consultants Ltd

Tel: +44 01276 508949

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