> Thanks for the link, from now on I won #39;t expect the same > behavior for Windows and Linux when solving a linear model. > But what about the difference in the number of digits?
The number of digits in the decimal exponent being an integer and thus exact quantity affects nothing. > However, I get a > difference when running an instance under Windows on the one hand and > on Linux on the other hand: it is the same optimal solution (same > primal values for variables), but the basis is different, as well as > the dual values of constraints and variables. It is a problem as I > need to use these dual values in a Branch-and-Price algorithm to get > new columns. If your branch-and-price algorithm is correct, it must not depend on which *optimal* basic solution is reported by lp solver. Don't you expect a particular optimal basis, do you? _______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
