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Ansys Learning Forum › Forums › Discuss Simulation › Photonics › Error when running a topology optimization on a cluster (Linux) › Reply To: Error when running a topology optimization on a cluster (Linux)

January 26, 2024 at 1:56 pm
samupekkaojanen
Subscriber

We installed Lumerical v241 on the cluster. I am actually now running into the following error when running lumtest.py on the cluster with the new version:

Traceback (most recent call last):
  File "/home/ojanen4/lumtest.py", line 12, in
    fdtd = lumapi.FDTD()
  File "/home/opt/Lumerical/v241/api/python/lumapi.py", line 1541, in __init__
    super(FDTD, self).__init__('fdtd', filename, key, hide, serverArgs, remoteArgs, **kwargs)
  File "/home/opt/Lumerical/v241/api/python/lumapi.py", line 1196, in __init__
    handle = self.__open__(iapi, product, key, hide, serverArgs, remoteArgs)
  File "/home/opt/Lumerical/v241/api/python/lumapi.py", line 1415, in __open__
    raise LumApiError(error)
lumapi.LumApiError: 'Exception [::appOpened]: Session not found'

This occurs at line "fdtd = lumapi.FDTD()". This worked fine in the older version. What could be causing this?