Hi, I have an application that uses glpk to solve millions of tiny LPs and I get several of the following messages.
Warning: numerical instability (primal simplex, phase II) I'm not sure about the difference between a warning and an error, and hence, whether I need to worry about this. I found the place in the code where this message is printed (in the file glpspx01.c) and after printing the message it appears to go back to the start of the main simplex solving loop. So I'm thinking that maybe it was able to recover from the problem and proceeded to find an accurate optimal solution. Is this case? Does the message mean that it was unable to find an accurate solution or does the message simply supply some information that can safely be ignored? -- Glenn C. Rhoads _______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
