Hello bug list
This is essentially a cosmetic issue. Note the
following output and, in particular, the redundant
'glp_simplex' reportage:
Constructing initial basis...
Size of triangular part = 26
0: obj = 1.866666667e-11 infeas = 1.150e+08 (1)
1: obj = 1.866666667e-11 infeas = 1.150e+08 (1)
PROBLEM HAS NO FEASIBLE SOLUTION
glp_simplex: unable to recover undefined or non-optimal solution
GLPK Integer Optimizer, v4.45
54 rows, 38 columns, 97 non-zeros
1 integer variable, which is binary
Here is a patch:
--- src/glpapi06.c.orig 2011-05-12 15:59:47.082202533 +0200
+++ src/glpapi06.c 2011-05-12 16:00:04.342703792 +0200
@@ -330,7 +330,7 @@
/* only optimal solution can be postprocessed */
if (!(ret == 0 && lp->pbs_stat == GLP_FEAS && lp->dbs_stat ==
GLP_FEAS))
- { if (parm->msg_lev >= GLP_MSG_ERR)
+ { if (parm->msg_lev >= GLP_MSG_DBG)
xprintf("glp_simplex: unable to recover undefined or non-op"
"timal solution\n");
if (ret == 0)
---
In addition, it could be useful to consider a debug
reporting option for GLPSOL:
--debug n enable debug reporting (0 = off 3 = all)
all the best, Robbie
---
Robbie Morrison
PhD student -- policy-oriented energy system simulation
Technical University of Berlin (TU-Berlin), Germany
University email (redirected) : [email protected]
Webmail (preferred) : [email protected]
[from Webmail client]
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