non-compatibility issue in results processing model results using gams as solver

[Mohammad Amin Tahavori]

non-compatibility issue in results processing model results using gams as solver

When running a model using gams as solver, in backend/run.py, run_plan function faces an attribute error in line 152 where the attribute "name" is not found in object "opt". To get it work, I just commented the line to avoid running the if/else condition.

The ValueError:

Traceback (most recent call last):

  File C:\ProgramData\Anaconda3\envs\eurocalliope_2022_02_08\lib\site-packages\spyder_kernels\py3compat.py:356 in compat_exec
    exec(code, globals, locals)

  File c:\users\markal\onedrive - vito\documents\github\calliope-be\untitled0.py:12
    m.run()

  File C:\ProgramData\Anaconda3\envs\eurocalliope_2022_02_08\lib\site-packages\calliope\core\model.py:269 in run
    results, self._backend_model, self._backend_model_opt, interface = run_backend(

  File C:\ProgramData\Anaconda3\envs\eurocalliope_2022_02_08\lib\site-packages\calliope\backend\run.py:46 in run
    results, backend, opt = run_plan(

  File C:\ProgramData\Anaconda3\envs\eurocalliope_2022_02_08\lib\site-packages\calliope\backend\run.py:152 in run_plan
    if "persistent" in opt.name and persistent is True:

AttributeError: 'GAMSShell' object has no attribute 'name'

Run Configuration:

run:
    solver: gams
    solver_options:
        io_options:
            solver: cplex

Calliope version

'0.6.8'

[Stefan Pfenninger]

Just to confirm - if you remove the check for opt.name, you can use GAMS as a solver without any issues?

[Mohammad Amin Tahavori]

Yes. it runs without any issue, and to the extend I explored the results, I could not find any issues or inconsistencies. in the postprocessing.