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--- doku:ansys [2021/10/22 10:19] – [Input file] sfrank
+++ doku:ansys [2022/08/30 13:40] – ir
@@ Line 67: / Line 67: @@
 ===== Job script =====
+==== Single node script ====
 A script for running Ansys/Fluent called fluent_run.sh is shown below.
@@ Line 96: / Line 97: @@
 fi
+</code>
+==== Multiple node script ====
+A script for running Ansys/Fluent on multiple nodes on VSC-4:
+<code>
+#!/bin/sh
+#SBATCH -J fluent_1 # Job name
+#SBATCH -N 2 # Number of nodes
+#SBATCH --partition=mem_0096 # mem_0096, mem_0384, mem_0768
+#SBATCH --qos=mem_0096       # devel_0096, mem_0096, mem_0384, mem_0768
+#SBATCH --ntasks-per-node=48 # number of cores
+#SBATCH --threads-per-core=1 # disable hyperthreading
+module purge
+module load ANSYS/2021R1 # or whichever ANSYS version you prefer
+unset SLURM_JOBID
+export FLUENT_AFFINITY=0
+export SLURM_ENABLED=1
+export SCHEDULER_TIGHT_COUPLING=1
+FL_SCHEDULER_HOST_FILE=slurm.${SLURM_JOB_ID}.hosts
+/bin/rm -rf ${FL_SCHEDULER_HOST_FILE}
+scontrol show hostnames "$SLURM_JOB_NODELIST" >> $FL_SCHEDULER_HOST_FILE
+JOURNALFILE=fluent_transient # .jou file
+if [ $SLURM_NNODES -eq 1 ]; then
+    # Single node with shared memory
+    fluent 3ddp -g -t $SLURM_NTASKS -i $JOURNALFILE.jou > $JOURNALFILE.log
+else
+    # Multi-node
+    fluent 3ddp -platform=intel -g -t $SLURM_NTASKS -pib.ofed -mpi=intel -cnf=${FL_SCHEDULER_HOST_FILE} -i $JOURNALFILE.jou > $JOURNALFILE.log
+fi
 </code>