> There #39;s a couple of features documented in 4.34 in the > stand-alone solver section (Appendix D):
> (Options specifi c to simplex method) > --bas fi lename read initial basis from filename in MPS format > --wbas fi lename write nal basis to fi lename in MPS format > Both are missing from the glpsol that I built on cygwin/Windows > Vista, for versions 4.34 as well as 4.39. > Now, documentation for 4.39 does NOT mention these features - so that > #39;s at least consistent. > I suspect this feature existed earlier on. I think this could be a > useful feature to keep, and I can quote my case here. > I am essentially solving a large-ish LP whose parameters are > generated by incrementing one parameter value. And so, I dont expect > too many changes in the solution for a large part of my increments, > and hence using a final basis for one solution as an initial basis for > the next could save a lot in time. Options --bas and --wbas were temporarily removed from glpsol, since they supported only fixed mps format. This made them useless in most cases due to limitation of row/column name length to 8 chars (in mathprog models the names produced by the translator are, as a rule, longer). _______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
