Originally posted by: SystemAdmin
[steve said:]
Hello!
I am using CPLEX 8, 9.1 and 11 on different computer.
Sometimes it happens, that there is something unsolvable in my system. CPLEX 8 and 9.1 run until the set time limit is reached and put out text "could not solve it within time".
But with CPLEX 11 I have a problem, because when there is some error (e.g. a condition in my system is violated), then it writes me a line
"CPX-I-INFO , Rechenzeitvorgabe: 20.0 sec"
with the time until I stop the simulation. And CPLEX writes it very fast, so the log-file gets big in some seconds (til gigabyte). Also CPLEX did not stopped, it only wrote the line until I broke up the simulation.
What is the problem? Is there an flag I can use to prevent this error?
----------------------------
Here is an example:
CPX-I-INFO , CPLEX wird intialisiert.
CPX-I-INFO , CPLEX erfolgreich initialisiert.
CPX-I-INFO , Daten werden eingelesen.
CPX-I-INFO , Daten eingelesen.
CPX-I-INFO , Problem wird aufbereitet.
Selected objective sense: MINIMIZE
Selected objective name: ZIELFKT [1 free row deleted]
Selected RHS name: RS
Selected bound name: BND
CPX-I-INFO , Problem erfolgreich aufbereitet.
CPX-I-INFO , Berechnung der kontinuierlichen Loesung.
Tried aggregator 1 time.
LP Presolve eliminated 4600 rows and 2017 columns.
Aggregator did 2015 substitutions.
Reduced LP has 2882 rows, 4319 columns, and 15555 nonzeros.
Presolve time = 0.03 sec.
Iteration log . . .
Iteration: 1 Scaled infeas = 9.562261
Iteration: 72 Scaled infeas = 0.050284
Iteration: 248 Scaled infeas = 0.027988
Iteration: 370 Scaled infeas = 0.025954
Iteration: 520 Scaled infeas = 0.021701
Iteration: 663 Scaled infeas = 0.018538
Iteration: 779 Scaled infeas = 0.016147
Iteration: 908 Scaled infeas = 0.013660
Iteration: 1074 Scaled infeas = 0.010236
Iteration: 1226 Scaled infeas = 0.006544
Iteration: 1366 Scaled infeas = 0.002891
Switched to devex.
Iteration: 1460 Objective = -502.236035
Iteration: 1621 Objective = -13892.674289
Iteration: 1649 Objective = -34281.704574
Iteration: 1823 Objective = -40065.833257
Iteration: 2004 Objective = -51408.024768
Iteration: 2207 Objective = -66321.624884
Iteration: 2414 Objective = -75983.304108
Iteration: 2588 Objective = -83414.564707
Iteration: 2764 Objective = -92266.857965
Iteration: 3009 Objective = -92685.620755
Removing shift (3).
CPX-I-INFO , Optimale Loesung gefunden.
CPX-I-INFO , Zielfunktionswert: -92685.524
CPX-I-INFO , Kontinuierliche Loesung erfolgreich berechnet.
CPX-I-INFO , Berechnung der (sub)optimalen ganzzahligen Loesung.
Selected objective sense: MINIMIZE
Selected objective name: ZIELFKT [1 free row deleted]
Selected RHS name: RS
Selected bound name: BND
CPX-I-INFO , Rechenzeitvorgabe: 20.0 sec
Generated priority order by decreasing cost.
MIP Presolve eliminated 287 redundant SOS constraints.
Row 'SK0100I.' infeasible, all entries at implied bounds.
Presolve time = 0.06 sec.
CPX-I-INFO , Rechenzeitvorgabe: 20.0 sec
CPX-I-INFO , Rechenzeitvorgabe: 20.0 sec
CPX-I-INFO , Rechenzeitvorgabe: 20.0 sec
CPX-I-INFO , Rechenzeitvorgabe: 20.0 sec
CPX-I-INFO , Rechenzeitvorgabe: 20.0 sec
CPX-I-INFO , Rechenzeitvorgabe: 20.0 sec
CPX-I-INFO , Rechenzeitvorgabe: 20.0 sec
CPX-I-INFO , Rechenzeitvorgabe: 20.0 sec
CPX-I-INFO , Rechenzeitvorgabe: 20.0 sec
...
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