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Ansys

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Description Content
module load cae/ansys
Availability bwUniCluster | bwGRiD-Tübingen
License Academic. See: Licensing and Terms-of-Use.
Citing Citations
Links Ansys Homepage | Support and Resources
Graphical Interface Yes

1 Description

ANSYS is a general purpose software to simulate interactions of all disciplines of physics, structural, fluid dynamics, heat transfer, electromagnetic etc. For more information about ANSYS products please visit http://www.ansys.com/Industries/Academic/

2 Versions and Availability

A list of versions currently available on all bwHPC-C5-Clusters can be obtained from the

Cluster Information System CIS


On the command line interface of a particular bwHPC cluster a list of all available ANSYS versions can be inquired as followed

$ module avail cae/ansys
-------------------------- /opt/bwhpc/kit/modulefiles --------------------------
cae/ansys/15.0
cae/ansys/16.2
cae/ansys/17.2
cae/ansys/18.2

The cae/ansys modules are using the KIT license server and is reserved for members of the KIT only.

3 Usage

3.1 Loading the Module

If you wish to load a specific version of ANSYS you can do so by executing e.g.:

$ module load cae/ansys/15.0

to load the version 15.0.

You can load the default version of ANSYS with the command:

$ module load cae/ansys

3.2 Start commands

To start an ANSYS Mechanical session enter

$ ansys150

To launch an ANSYS FLUENT session enter

$ fluent

The following command is to run the ANSYS Workbench

$ runwb2

Online documention is available from the help menu or by using the command

$ anshelp150

As with all processes that require more than a few minutes to run, non-trivial ANSYS solver jobs must be submitted to the cluster queueing system.

4 Examples

4.1 ANSYS Mechanical batch jobs

The following script could be submitted to the queueing system to run an ANSYS Mechanical job in parallel:

#!/bin/bash
module load cae/ansys
export MPIRUN_OPTIONS="-prot"
export MPI_USESRUN=1
cd Arbeitsverzeichnis
export MACHINES=`/software/bwhpc/common/cae/ansys_inc150/scc/machines.pl`
ansys150 -dis -b -j lal -machines $MACHINES < input.f18


working_dir could start with $HOME or $WORK .

To submit the example script to the queueing system execute the following (32 cores, 1 GB of memory per core, max. time 600 seconds) :

msub -l nodes=2:ppn=16,pmem=1000mb,walltime=600 Shell-Script

4.2 ANSYS Fluent batch jobs

The following script "run_fluent.sh" could be submitted to the queueing system to run an ANSYS Fluent job in parallel using 4 cores on a single node:

#!/bin/sh
#MSUB -l nodes=2:ppn=28
#MSUB -l walltime=0:60:00
#MSUB -l mem=120000mb
## setup environment
module load cae/ansys
module load system/ssh_wrapper/0.1
export MPI_USESRUN=1
export FLUENT_SSH=/opt/bwhpc/common/system/ssh_wrapper/0.1/ssh
export FLUENT_SKIP_SSH_CHECK=1
export I_MPI_HYDRA_BOOTSTRAP="slurm"
export I_MPI_HYDRA_RMK="slurm"
export I_MPI_HYDRA_BRANCH_COUNT="-1"
export run_nodes=`srun hostname -s`
echo $run_nodes | sed "s/ /\n/g" > fluent.hosts
echo "" >> fluent.hosts
## start fluent job
time fluent 3d -mpi=intel -g -t56 -pib -cnf=fluent.hosts -i test.inp

To submit the example script to the queueing system execute the following:

$ msub run_fluent.sh


4.3 ANSYS CFX batch jobs

With the script "run_cfx.sh" you can submit a CFX job to the queueing system to run in parallel using 8 cores on two node with the start-method 'Platform MPI Parallel':

#!/bin/sh
#MSUB -l nodes=2:ppn=28
#MSUB -l walltime=0:60:00
#MSUB -l mem=120000mb
## setup environment
module load cae/ansys
export CFX5RSH=ssh
export MPI_USESRUN=1
export I_MPI_HYDRA_BOOTSTRAP="slurm"
export I_MPI_HYDRA_RMK="slurm"
export I_MPI_HYDRA_BRANCH_COUNT="-1"
hostlist=$(srun hostname -s)
hostlist=`echo $hostlist| sed 's/ /,/g'`
## start cfx job
cfx5solve -def  test.def -par-dist $hostlist  -start-method 'Intel MPI Distributed Parallel'

To submit the example script to the queueing system execute:

$ msub run_cfx.sh