unscaled primal/dual violation Topic is solved

Solver related questions
Post Reply
User avatar
bussieck
Moderator
Moderator
Posts: 1033
Joined: 7 years ago

Re: unscaled primal/dual violation

Post by bussieck »

Ping,

All solvers work with tolerances and suffer from rounding errors. There are cases where your model is on the brink of feasibility. Hence with some solver settings (or different solvers) you get an "optimal" solution with others the model is reported as infeasible. The Cplex guys have done a nice video about analyzing infeasible models. Perhaps this helps: https://www.youtube.com/watch?v=tUALbhJ2xWY

-Michael
Post Reply