[Scip] why dual solutions of Soplex are different from CPLEX

[XiangyongLi]

Dear all,


I use SCIP to develop a branch and price method where soplex is used as the LP solver.  At the root node, I use SCIPgetDualsolLinear to get dual solutions. In the mean while, I also output the corresponding MIP at this node. I use CPLEX to solve the corresponding LP and get dual solutions.  But these dual solutions are different from those obtained by SCIPgetDualsolLinear  in my B&P.

Is there any reason for this situation?  Thanks. 

Xiangyong 
 
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