In a specialized single-commodity network flow solver, the arithmetic is normally exact even if done in floating point.
That is usually not true with multi-commodity flows. If glpk floating point gives you the correct basis, glpk exact should give you the exact answer in fairly short order. So long as the glpk floating point basis is near-optimal and feasible, a subsequent call to glok exact should be fairly quick. -- Michael [EMAIL PROTECTED] "Those parts of the system that you can hit with a hammer (not advised) are called Hardware; those program instructions that you can only curse at are called Software." _______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
