Hi Chris, > > There is no need (and technically it'd be difficult) to load Q > back into > the PP wksp. It would be sufficient to provide some specific > preprocessor routines that allows, for example, fixing a > column or add a > row to the current instance residing in the workspace. > > > If I understand correctly, currently glp_npp_build_prob() frees almost > all problem data from the workspace, keeping only the references > needed for glp_npp_load_sol() and glp_npp_recover_sol(). This is a > reasonable design since in most cases there is no need to keep the > additional data in the workspace. However this means that after > calling glp_npp_build_prob() no further preprocessing can be done > using the same workspace, and that glp_npp_build_prob() can only be > called once.
Currently, yes, npp_build_prob removes that data from the workspace. However on api level there will be a flag not to do that. I think to implement an initial version of api and then to see what needs to be added or improved. Best, Andrew Makhorin _______________________________________________ Help-glpk mailing list Help-glpk@gnu.org https://lists.gnu.org/mailman/listinfo/help-glpk
