SimonRubenDrauz
commented
2 years ago Hi there again,
I tried to find out a bit more about the problem and realized the following:
If I run:
solver.solve(model, tee=solver_tee, symbolic_solver_labels=False, load_solutions=False, **solve_method_options) passing symbolic_solver_labels=False it is not working. However, if I don't pass it at all:
solver.solve(model, tee=solver_tee, load_solutions=False, **solve_method_options) at least the solver is returning a solution.
However, then the next error occurs when I call model.solution.load_from(results) and 'results' are the return of 'results = solver.solve(...)'.
Following error occurs then:
AttributeError: Unknown attribute `_cuid' for object with type <class 'pyomo.opt.results.solution.Solution'>Looking forward to your answer. (If I did any mistake in the parametrizing, sry for that, I am quite new to pyomo). Cheers, Simon
blnicho
jsiirola
Summary
Hi there,
I was trying to use a project on github which is called egret: https://github.com/grid-parity-exchange/Egret. Egret is doing optimizations in a power grid based on a pyomo model. I used the cyipopt solver, however, it raises an error if I do so. Unfortunately, I am not a developer of egret so I can only reference what I was doing when I used egret. I also got in contact with them and you find my issue here: https://github.com/grid-parity-exchange/Egret/issues/254. They adviced me to contact you as you might have a solution.
Steps to reproduce the issue
In egret run the following example (change the solver from 'cbc' to 'cyipopt') : Egret/examples/unit_commitment/uc_test_example.py. The solver within egret is built through 'solver = po.SolverFactory(solver)'. 'solver' is cyipopt.
Error Message
The error that is raised is the following:
File "...\pyomo\common\config.py", line 2178, in set_value raise ValueError( ValueError: key 'symbolic_solver_labels' not defined for ConfigDict '' and implicit (undefined) keys are not allowed
System information
Pyomo version: 6.2 Python version: 3.8 Operating system: Windows 10 How Pyomo was installed (PyPI, conda, source): conda-forge Solver (if applicable): cyipopt --> cyipot version: 1.1.0 --> ipopt version: 3.14.4
Additional information
If you cannot reproduce the problem, I will try to build a simple example that is not based on egret. Please let me know if it's required.
Looking forward to hearing from. Thank you! Kind regards, Simon