FDS

Fire Dynamics Simulator (FDS) is a large-eddy simulation (LES) code for low-speed flows, with an emphasis on smoke and heat transport from fires.

Official website: https://pages.nist.gov/fds-smv/

Updated: Jan 2024

1 1. Job submission script
2 2. Job submission

Modules

Module name	Description	Note

Module name	Description	Note
FDS/6.8.0-cpeIntel-23.03	Standard FDS	MPI + OpenMP

1. Job submission script

A FDS input file (.fds) is required. For new users, visit https://fdstutorial.com/ or https://pages.nist.gov/fds-smv/.

Below is an example of a FDS submission script (submitFDS.sh). It can be created using vi submitFDS.sh.

#!/bin/bash
#SBATCH -p compute             # Partition
#SBATCH -N 1                   # Number of nodes 
#SBATCH --ntasks-per-node=32   # Number of MPI processes per node
#SBATCH --cpus-per-task=2      # Number of OpenMP threads per MPI process
#SBATCH -t 5-00:00:00          # Job runtime limit 
#SBATCH -J FDS                 # Job name
#SBATCH -A ltxxxxxx            # Account *** {USER EDIT} *** 

INPUT_FILE=./path-to-your-input-file.fds

# ---------------------------

module purge
module load FDS/6.8.0-cpeIntel-23.03

export OMP_NUM_THREADS=${SLURM_CPUS_PER_TASK}
ulimit -s unlimited

srun -N${SLURM_JOB_NUM_NODES} -n${SLURM_NTASKS} -c${SLURM_CPUS_PER_TASK} fds ${INPUT_FILE} 2>&1

Each LANTA compute node has 128 CPU cores. Therefore, (ntasks-per-node) x (cpus-per-task) must be less than or equal to 128.

2. Job submission

To submit jobs to the SLURM queuing system, execute

sbatch submitFDS.sh

The log will be recorded in ‘slurm-xxxxxx.out’. To view a few latest lines, use tail slurm-xxxxxx.out.

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