Lito Yap
Ansys Employee


You cannot run the Lumerical "script.lsf" on a headless cluster. Lumerical scripts require a GUI connection to run. 

>>Lumerical product components and licensing overview – Ansys Optics 

You can only run the "simulation_file.lms" directly from the terminal or on your cluster's job scheduler submission script. 

>>Running simulations using terminal in Linux – Ansys Optics 

The command line to run the "simulation.lms" file would be something like this: (default install path for 2023 R1 shown) 

/opt/lumerical/v231/mpich2/nemesis/bin/mpiexec -n 4 /opt/lumerical/v231/bin/fd-engine -t 1 simulationfile.lms
/opt/lumerical/v231/mpich2/nemesis/bin/mpiexec -n 4 /opt/lumerical/v231/bin/eme-engine-mpich2nem -t 1 simulationfile.lms
/opt/lumerical/v231/mpich2/nemesis/bin/mpiexec -n 4 /opt/lumerical/v231/bin/varfdtd-engine-mpich2nem -t 1 simulationfile.lms

See also the KB guide below on how to run sweeps without the CAD. 

>>Running parameter sweeps without the CAD – Ansys Optics

Hope this helps.