Originally posted by: magic_

Hi,

I've noticed strange behavior of cplex after setting parameter TiLim. Even though it's set to 2 hours (7200sec), getTime() returns values down to 6300. EpGap is set to 0 and solution status is Feasible so it didn't stop working because of finding optimal solution. I went through other threads but didn't find answer to my question. Also, EpGap and TiLim are the only parameters I've touched so I didn't change ClockType parameter from its default setting to CPU time.

Can anybody help & explain what's the reason of a such behavior? I'm using C++.

Thanks,
M
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Originally posted by: SystemAdmin

May it be that you ran out of memory?

Tobias
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Originally posted by: magic_

Hi, thanks for your answer.

Nope, not that. I didn't get any out of memory exception message, which I have previously seen couple of times. I wouldn't get any solution either.

M
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Originally posted by: SystemAdmin

Are you using multiple threads? Can you post a log file?
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Originally posted by: magic_

No multiple threads and unfortunately no logs. I left cplex running for couple of days with loop changing input and then I saw this behavior.
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Originally posted by: SystemAdmin

Sorry. Don't know what is going on. I guess you did not fiddle around with your system clock during the CPLEX run? For example, that your clock time was wrong and then the NTP demon fixed the issue automatically?

If you were able to reproduce the issue and then send a log file, this would be very helpful...
Tobias
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