> I had a line of math-prog code that had a circular reference: > param FromNode{ (train,sd,seq) in TRAIN_SEGS } symbolic > := Terminal[FromNode[train,sd,seq]];
> GMPL, much further down in the model, just stops without any > warning or anything else. It took a while to figure out the circular > reference > and fix my error. If possible, it would be nice if GMPL could > discover this > and issue a message. It is problematic, because mathprog allows recursive definition of sets and parameters. Incorrect definition, as in your case, leads to infinite loop that, in turn, causes stack overflow--the same that would happen in any programming language. _______________________________________________ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk