-------- Forwarded Message -------- From: Diederik Veenendaal <diederik.veenend...@gmail.com> To: help-glpk@gnu.org Subject: 4.60 script not working in 4.65 Date: Tue, 10 Nov 2020 09:28:13 +0100
> Dear Andrew, > Thank you for providing GLPK. I'm trying to share a knapsack ILP > script that works on my computer with someone else, but it fails on > his computer. > We're both running GLPK through CVXOPT, installed via Anaconda. > However, I'm using v4.60, and he has installed v4.65. I'm unable to > install an older version of GLPK through Anaconda. > I'm not sure where to even begin to look, because I don't understand > if the problem is with my script, with CVXOPT or with GLPK. > I hope the problem is familiar, or that you can point me in some > possible directions. > Kind regards, > Diederik > The script runs identical until an LP solution is found, but then > deviates. > My computer: > OPTIMAL LP SOLUTION FOUND > Integer optimization begins... > + 12: mip = not found yet >= -inf (1; 0) > Solution found by heuristic: -1500 > Solution found by heuristic: -1560 > Solution found by heuristic: -1570 > Solution found by heuristic: -1610 > Solution found by heuristic: -1620 > + 185: mip = -1.620000000e+003 >= tree is empty 0.0% (0; 205) > INTEGER OPTIMAL SOLUTION FOUND > His computer. > OPTIMAL LP SOLUTION FOUND > Integer optimization begins... > Long-step dual simplex will be used > + 0: mip = not found yet >= -inf (1; 0) > + 0: >>>>> 0.000000000e+000 >= 0.000000000e+000 0.0% (1; 0) > + 0: mip = 0.000000000e+000 >= tree is empty 0.0% (0; 1) > INTEGER OPTIMAL SOLUTION FOUND > Wrong parameter 1 in LAPACKE_cgtsv_work > Wrong parameter 1 in LAPACKE_cgtsv_work > Wrong parameter 1 in LAPACKE_cggesx_work > Wrong parameter 1 in LAPACKE_cggesx_work > Wrong parameter 1 in LAPACKE_cggesx_work