How to find and force a Cplex version in AIMMS PRO

Hello @Curious AIMMS-bot 4 !

The CPLEX version that is used in PRO depends on the AIMMS Application Version that was published along with any solver settings that may have been exported with the project or not.

A way to find out what CPLEX version was used for an AIMMS PRO optimization run is by looking into the PRO session logs. More information about logs and retrieving them can be found here: https://documentation.aimms.com/pro/admin-config-2.html and https://documentation.aimms.com/pro/logging.html

If you have the AIMMS Project option 'major_messages' set to 'Show major messages' then there would be a message output to the Session.log file that contains information like:




To control what CPLEX version you are using this can be done by assigning the CPLEX version through specifying the version in a statement within some procedure like




Another way to specify a solver version is by exporting the aimmspack with a specific solver configuration.

Within AIMMS through 'Settings' -> 'Solver Configuration' a window will show the various solvers available. From here you can add different CPLEX versions and choose them as the default solver. For this to apply in PRO, you will want to export the solver configuration which will create a solvers.slv file that is located in the project directory. Export the aimmspack including this file and when published, the application will use the solver that was specified as the default.