Remove solver options from default installation
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Description
The solvers for running MESSAGEix are currently specified in the file `message_ix/model/MESSAGE/auxiliary_settings.gms` - this causes issues for users who do not have a CPLEX license. It would be prefereable that GAMS defaults to the solver selection made during GAMS installation, and only make the MESSAGE-specific selection of solver optional.
Contributor guide
Research direction
Start by reading message_ix/model/MESSAGE/auxiliary_settings.gms and trace how its solver settings are applied when MESSAGEix runs. Confirm that GAMS uses the solver selected during installation by default, while the MESSAGE-specific solver choice remains optional, and verify the affected installation and model-running paths.
Written by the indexing model from the issue text.
Assessment
- Domain
- backend
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100