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1. ijknabla commented on Jul 20, 2025

   

   ijknabla

   on Jul 20, 2025

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   I’ve noticed that some commands tend to hang when using omc --interactive=zmq.
   Right now, our code has very limited coverage, so we need to handle many different cases carefully.

   Your insights and issues are really helpful for deepening our understanding of how omc behaves.

   It might actually be a bug in omc itself.
   Even if that’s the case, I’d still like to understand the issue more thoroughly.

   ---

   We need more detailed log!
   And please send your stdout/stderr on script below.

      from omc4py import open_session
   ++ import logging
   
   ++ logging.getLogger("omc4py").setLevel(logging.DEBUG)
   ++ logging.getLogger("omc4py").addHandler(logging.FileHandler("omc4py.log"))
   ++ # Plese send `omc4py.log` after execute script
   
      model = 'ThermoSysPro.Examples.SimpleExamples.TestFan_Qin'
   
      with open_session(
          omc_exec_path
      ) as session:
          print(session.getVersion())
          session.loadFile('ThermoSysPro/package.mo')
          session.setCommandLineOptions("-d=bltdump")
          checkModelLog=session.checkModel(model)
          print(checkModelLog)
          buildModelResults = session.buildModel(model)
   ++     session.__check__()
          print(buildModelResults)

   • omc returns Modelica-expression-string as return value
   • omc4py compile these strings by Modelica syntax, and construct python values

   We need to know which is omc's failure or omc4py's failure.

   I am not a regular English speaker, and I am using a translation tool to write this response.
   If anything is unclear, please let me know and I will rewrite the sentence.