Lito
Ansys Employee
If you only want to run the 'simulation.fsp' file you can run them directly from the command line:
/opt/lumerical/v212/mpich2/nemesis/bin/mpiexec -n 4 /opt/lumerical/v212/bin/fdtd-engine-mpich2nem -t 1 /path/simulationfile.fsp
See this article for details.