Hi Xyron, Thanks for your reply.
What do you mean by "exploiting the natural sparsity of my problem"? I mean, how is that done exactly in my example for instance? Aly ----- Original Message ----- From: "glpk xypron" <[email protected]> To: "Aly Megahed" <[email protected]>, [email protected] Sent: Thursday, April 29, 2010 2:16:37 AM GMT -05:00 US/Canada Eastern Subject: Re: [Help-glpk] Problem in GLPK Hello Aly, > glp_malloc: no memory available > Error detected in file \src\glpenv05.c at line 70 > > The constraint that caused that error is: > > s.t. Delivery_from_Same_Project{j in J, k in K, p in P, t in T: j!=k}: > xx[j,k,p,t] ==0; > columns that are always zero should not be defined. Instead you should exploit the natural sparsity of your problem to reduce the memory usage. Best regards Xypron -- GRATIS fur alle GMX-Mitglieder: Die maxdome Movie-FLAT! Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01 -- PhD Student Vice President, Egyptian Student Association in North America, Georgia Tech Chapter Rm. 407 Main Building H. Milton Stewart School of Industrial and Systems Engineering Georgia Institute of Technology 765 Ferst Dr., NW Atlanta, Georgia 30332-0205, USA _______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
