Reply To: Query related to Rough waveguide 3D FDTD, Simulation time, Negative Transmission

[Lito]

@Naveen Kumar, 

When you run with SLURM, your command to run multiple simulation files at the same time would be similar to this KB. 

Example - run 2 simulations on 2 nodes using 32 cores per node per simulation:

#!/bin/sh
#SBATCH --job-name=lumtest%j
#SBATCH --nodes=2
#SBATCH --ntasks=64
#SBATCH --cpus-per-task=1
#SBATCH --ntask-per-node=32
#SBATCH --time=01:00:00
#SBATCH --output=lumtest%j.log

## change directory to the location of your simulation files
cd /{path to simulation files}

## set/configure/load MPI (consult IT/cluster admins)
## example below runs with OpenMPI - using default install path for Lumerical 2024 R2.3

mpirun -n 32 /opt/lumerical/v242/bin/fdtd-engine-ompi-lcl -t 1 {first_simulation.fsp} &
mpirun -n 32 /opt/lumerical/v242/bin/fdtd-engine-impi-lcl -t 1 {second_simulation.fsp} &

Hope this helps. 

Lito