clone log in parallel optimization
Specifies whether to create clone log files during parallel optimization.
Purpose
Creates clone log files in parallel optimization
| API | Parameter Name | Name prior to V12.6.0 |
|---|---|---|
| C | CPXPARAM_Output_CloneLog | CPX_PARAM_CLONELOG |
| C++ | IloCplex::Param::Output::CloneLog | CloneLog |
| OPL | not available | |
| Interactive | output clonelog | output clonelog |
| Identifier |
Description
Specifies whether CPLEX clones the log files of nodes during parallel or concurrent optimization. When you use parallel or concurrent CPLEX, this feature makes it more convenient to check node logs when you use more than one thread to solve models. For parallel optimization on N threads, for example, turning on this parameter creates N logs,clone[0].log through clone[N-1].log. This feature is available only during concurrent optimization and mixed integer programming (MIP) optimization.
| Value | Meaning |
|---|---|
| -1 | CPLEX does not clone log files. (off) |
| 0 | Automatic: CPLEX clones log files if log file is specified. default |
| 1 | CPLEX clones log files. (on) |