FSCIP_CMD not recognized

woutkonings commented 1 year ago

Details for the issue

What did you do?

I installed SCIPOptSuite-8.0.3-win64-VS15.exe and pulp version 2.7.0. SCIP_CMD is working fine for me when using solver = pulp.SCIP_CMD(path=solver_path=r"C:\Program Files\SCIPOptSuite 8.0.3\bin\scip.exe") I tried to instantiate a 'FSCIP_CMD' solver. The parallelized version of SCIP_CMD, using: solver = pulp.FSCIP_CMD(path=r"C:\Program Files\SCIPOptSuite 8.0.3\bin\fscip.exe")

What did you expect to see?

I expected the FSCIP to be autocompleted in VScode and the code to run normally, but it is not recognized as a class in the pulp library.

What did you see instead?

When trying to run the code using FSCIP_CMD, I got the following error:

Traceback (most recent call last):
  File "C:\Users\User\repos\Rolande_Logistic_Optimisation\python_solver\optimizer.py", line 170, in <module>
    m.run(solver_path=FSCIP_PATH)
  File "C:\Users\User\repos\Rolande_Logistic_Optimisation\python_solver\route_model.py", line 179, in run
    self.solve_problem(solver_path)
  File "C:\Users\User\repos\Rolande_Logistic_Optimisation\python_solver\route_model.py", line 160, in solve_problem
    status = self.problem.solve(solver=solver)
  File "C:\Users\User\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\pulp\pulp.py", line 1913, in solve
    status = solver.actualSolve(self, **kwargs)
  File "C:\Users\User\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\pulp\apis\scip_api.py", line 134, in actualSolve
    subprocess.check_call(proc, stdout=stdout, stderr=stderr)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\lib\subprocess.py", line 369, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['C:\\Program Files\\SCIPOptSuite 8.0.3\\bin\\fscip.exe', '-c', 'read "C:\\Users\\USER~1\\AppData\\Local\\Temp\\b8aad306ae3247fc871b96c2a67845fd-pulp.lp"', '-c', 'optimize', '-c', 'write solution "C:\\Users\\USER~1\\AppData\\Local\\Temp\\b8aad306ae3247fc871b96c2a67845fd-pulp.sol"', '-c', 'quit']' returned non-zero exit status 1.

Useful extra information

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What operating system are you using?

[x] Windows: ( _version: Microsoft Windows 11 Business )
[ ] Linux: ( distro: ___ )
[ ] Mac OS: ( version: ___ )
[ ] Other: ___

I'm using python version:

[ ] 2.7
[ ] 3.4
[ ] 3.5
[ ] 3.6
[x] Other: 3.10.11

I installed PuLP via:

[x] pypi (python -m pip install pulp)
[ ] github (python -m pip install -U git+https://github.com/coin-or/pulp)
[ ] Other: ___ (conda?)

Did you also

[ ] Tried out the latest github version: https://github.com/coin-or/pulp
[x] Searched for an existing similar issue: https://github.com/coin-or/pulp/issues?utf8=%E2%9C%93&q=is%3Aissue%20

JacekTomaszewski commented 1 year ago

Uninstall pulp and then run python -m pip install git+https://github.com/coin-or/pulp.git. It installs same version for now (2.7.0) but when you pull from github it pull code associated to FSCIP. Works for me

pchtsp commented 7 months ago

I'm going to close the issue as the new version is now in pypi. Feel to open it again if the problem re-appears.

coin-or / pulp