Originally posted by: SystemAdmin

[steve said:]

Hello!

I get the message "Warning: integer solution contains unscaled infeasibilities." from one simulation, but only when I use CPLEX 11. With CPLEX 9.1 it works fine and get a result.
What can I do to get my system work also under version 11?
#CPLEXOptimizers
#DecisionOptimization

Originally posted by: SystemAdmin

[oussedik said:]

Hi,

CPLEX scales a model before solving it, after the solve, the error indicates that the corresponding unscaled solution contains variables that violate the feasibility tolerance.

This may occur when a problem is ill conditioned, so the error can be raised with CPLEX 11 and not with CPLEX 9 as the two solves are different and take different paths to solutions. You can try, if possible, to reduce large coefficients if present in your model, you should also refer to the CPLEX documentation on how to deal with ill-conditioned problems and unscaled infeasibilities.

Sofiane
#CPLEXOptimizers
#DecisionOptimization

Originally posted by: SystemAdmin

[steve said:]

Thank you, I will try it.
#CPLEXOptimizers
#DecisionOptimization