MPL for Windows Manual
MPL for Windows Manual
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You can change the log file options for XPRESS by choosing XPRESS Pprameters from the Options menu and then pressing the Log file tab. This will display the log file options for XPRESS in the dialog box as shown below:
Figure 4.55: The Log File Tab in XPRESS Options Dialog Box
Message Window: While the solver is optimizing, the iteration log information will be sent to the Message Window.
Log file: While the solver is optimizing, the iteration log information will be sent to a log file.
Log filename: Specifies the filename the solver will use for the log file. If the filename given contains asterisks '*' instead of the name, like the default entry '*.log', the solver will use the name of model file with the extension given.
The LP iteration log controls the amount of information that is sent to either the log window and/or the log file. The following are the possible selections:
Summary at end.
Summary every n iterations.
Details every n iterations.
The default is summary at every 100 iterations.
The MIP Node log option controls the frequency of the node logging. This option is useful for monitoring the progress of a problem that requires many nodes to solve. The following are the possible selections:
No node log.
Summary at end.
Detail all solutions.
Detail every node.
Summary every n nodes.
The default is summary at every 100 nodes.
The Barrier Progress Info Log option has the following possible selections:
No progress log.
Printout every iteration (default).