Originally posted by: Zacharie_ALES

Hello,

If I know a priori a feasible solution of my problem. How can I give it to cplex? 

If I understand well a HeuristicCallback would work but it would also be called at each node to find an integer solution (and I just want to give a solution at the root). Is it possible to use my HeuristicCallback at the root and cplex HeuristicCallback at the other nodes? Or is their any better way of doing this?

Thanks !

What you are looking for is called a MIP start.

Originally posted by: Zacharie_ALES

Thanks, I was searching the keywords "feasible" and "solution" I did not thought about "start".