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Selecting the solver in CS FMU

#10185  Permalink Top

Selecting the solver in CS FMU

Aug-12-20 15:05:29

By now, there should be two available solvers for CS, Euler and CVODE.

How can i select the solver I want to use?

I just found the tracs which confimes that CVODE is available, but in the user-guides, this possibility is (as far as i have seen) not available.

I am using the newest nightly build of OMEdit and FMpy for the transfer to python.

Best regards,

Henrik

#10186  Permalink Top

Re: Selecting the solver in CS FMU

Aug-12-20 17:49:11

See: https://www.openmodelica.org/doc/OpenMo … g-fmiflags
use: --fmiFlags=s:cvode


#10187  Permalink Top

Re: Selecting the solver in CS FMU

Aug-13-20 06:34:30

Thanks!

After setting this flag

Code:

OpenModelica.Scripting.loadFile("grid.mo"); getErrorString();

OpenModelica.Scripting.loadFile("network_ctrl_lim2.mo"); getErrorString();

setCommandLineOptions("-d=newInst"); getErrorString();

setCommandLineOptions("-d=initialization"); getErrorString();

//setCommandLineOptions("--simCodeTarget=Cpp"); getErrorString();

setCommandLineOptions("-d=-disableDirectionalDerivatives"); getErrorString();

setCommandLineOptions("--fmiFlags=s:cvode"); getErrorString();

OpenModelica.Scripting.translateModelFMU(network_ctrl_lim2, version="2.0", fmuType = "cs"); getErrorString();

I receive following error message while trying to execute the file:

Code:

Traceback (most recent call last):

  File "C:\Users\hbode\Miniconda3\envs\omgtest\lib\site-packages\fmpy\fmi1.py", line 142, in __init__

    self.dll = cdll.LoadLibrary(libraryPath)

  File "C:\Users\hbode\Miniconda3\envs\omgtest\lib\ctypes\__init__.py", line 442, in LoadLibrary

    return self._dlltype(name)

  File "C:\Users\hbode\Miniconda3\envs\omgtest\lib\ctypes\__init__.py", line 364, in __init__

    self._handle = _dlopen(self._name, mode)

OSError: [WinError 126] Das angegebene Modul wurde nicht gefunden



During handling of the above exception, another exception occurred:



Traceback (most recent call last):

  File "C:/Users/hbode/PycharmProjects/omg/examples/test_pll.py", line 89, in <module>

    simulate_custom_input()

  File "C:/Users/hbode/PycharmProjects/omg/examples/test_pll.py", line 34, in simulate_custom_input

    instanceName='instance1')

  File "C:\Users\hbode\Miniconda3\envs\omgtest\lib\site-packages\fmpy\fmi2.py", line 509, in __init__

    super(FMU2Slave, self).__init__(**kwargs)

  File "C:\Users\hbode\Miniconda3\envs\omgtest\lib\site-packages\fmpy\fmi2.py", line 85, in __init__

    super(_FMU2, self).__init__(**kwargs)

  File "C:\Users\hbode\Miniconda3\envs\omgtest\lib\site-packages\fmpy\fmi1.py", line 144, in __init__

    raise Exception("Failed to load shared library %s. %s" % (libraryPath, e))

Exception: Failed to load shared library C:\Users\hbode\AppData\Local\Temp\tmpzlcvhz9b\binaries\win64\network_ctrl_lim2.dll. [WinError 126] Das angegebene Modul wurde nicht gefunden

The german Error messages (Winerror126) mean: "This module could not be found".

Except this flag, everything is the same. Anyone an idea, why this happens, and how to solve it? :-)

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