The Tuner Log
While the tuner evaluates various control settings, it prints a summary log for each finished run. When tuning a MIP problem, the summary log consists of eight columns of information:
| RunID | A sequential tuner run number. |
| Stat | Status of a finished run: S - Solved, T - Timeout, U - Unsolved and C - Cancelled. |
| Solution | The best integer solution. |
| Bound | The best bound. |
| Integral | The primal dual integral. |
| Gap | The relative MIP gap. |
| RunTime | The time spent for solving with this control setting. |
| TotTime | The total time spent for the tuner. |
When tuning an LP problem, the summary log consists of five columns of information:
| RunID | A sequential tuner run number. |
| Stat | Status of a finished run: S - Solved, T - Timeout, U - Unsolved and C - Cancelled. |
| Solution | The LP objective. |
| RunTime | The time spent for solving with this control setting. |
| TotTime | The total time spent for the tuner. |
When the tuner finds an improving control setting, it will highlight the run with an asterisk (*) at the beginning of the log line. The tuner will also specify the control parameters and the log file name for the improving run.
If a control setting has been evaluated in previous tuner runs, its result can be reused. In this case, the tuner will print an extra H in the Stat column.