ILOG CPLEX 11.0 Parameters Reference Manual > > Alphabetic List of Parameters > Computation time reporting |
Computation time reporting |
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C Name
CPX_PARAM_CLOCKTYPE
C++ Name
ClockType
Java Name
ClockType
.NET Name
ClockType
InteractiveOptimizer
clocktype
Identifier
1006
Description
Decides how computation times are measured for both reporting performance and terminating optimization when a time limit has been set. Small variations in measured time on identical runs may be expected on any computer system with any setting of this parameter.
On UNIX platforms, where it is possible to measure CPU time, the default setting 0 (zero) allows ILOG CPLEX to choose wall clock time when other parameters invoke parallel optimization and to choose CPU time when other parameters enforce sequential (not parallel) optimization.
On Microsoft Windows platforms, computation time is always measured as wall clock time.
Values
Value |
Meaning |
---|---|
0 |
Automatic: let CPLEX choose; default |
1 |
CPU time |
2 |
Wall clock time (total physical time elapsed) |
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