Reply To: unable to calcualte mode expansion

[Vincent Letourneau]

Hi, I seem to have fixed the libglut.so.3 problem with patchelf. Now if I call

fdtd-engine forward.fsp

I get 

Messages file /ansys_inc/shared_files/licensing/language/en-us/ansysli_msgs.xml does not exist.
0.224167% complete. Elapsed simulation time: 2.24167e-15 secs. Max time remaining: 6 secs. Auto Shutoff: 1
2.31639% complete. Elapsed simulation time: 2.31639e-14 secs. Max time remaining: 6 secs. Auto Shutoff: 1
4.7075% complete. Elapsed simulation time: 4.7075e-14 secs. Max time remaining: 6 secs. Auto Shutoff: 1
9.48972% complete. Elapsed simulation time: 9.48972e-14 secs. Max time remaining: 6 secs. Auto Shutoff: 0.0011975
19.0542% complete. Elapsed simulation time: 1.90542e-13 secs. Max time remaining: 5 secs. Auto Shutoff: 2.17561e-07

So Lumerical seems to be working fine directly from the terminal (with the exception of the missing message file), but im still getting errors when using the python API. If run my script I get
CONFIGURATION FILE {'root': '/home/mila/l/letournv/opt/lumerical/v241/api/python', 'lumapi': '/home/mila/l/letournv/opt/lumerical/v241/api/python'}
Traceback (most recent call last):
  File "/home/mila/l/letournv/repos/nanophoto/lumtest.py", line 42, in
    print(fom.get_fom(sim))
  File "/home/mila/l/letournv/opt/lumerical/v241/api/python/lumopt/figures_of_merit/modematch.py", line 207, in get_fom
    trans_coeff, self.wavelengths = ModeMatch.get_transmission_coefficient(sim, self.direction, self.monitor_name, self.mode_expansion_monitor_name)
  File "/home/mila/l/letournv/opt/lumerical/v241/api/python/lumopt/figures_of_merit/modematch.py", line 234, in get_transmission_coefficient
    raise UserWarning('unable to calcualte mode expansion.')
UserWarning: unable to calcualte mode expansion.

Any help on this would be appreciated