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Crash Simulation Software - finite element and multiphysics program to analyse the nonlinear response of structures |
General Information
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Support and Examples
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This documentation describes the specifics of installation and usage of ANSYS LS-DYNA at HLRN. Introductory courses for ANSYS as well as courses for special topics are offered by ANSYS Inc. and their regional offices, e.g. in Germany. It is recommended to take an introductory course first (see the CAD-FEM GmbH homepage). Good (free) starting points for self-study are https://students.cadfem.net/de/ansys-gratis-lernen.html and https://courses.ansys.com |
Details of the HLRN Installation of ANSYS
The ANSYS versions currently installed are
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The module name is |
Usage and Licensing at HLRN
The use of Ansys is restricted to members of the ansys user group. You can apply to become a group member at support[at]hlrn.de
Please note the license conditions: Our academic licenses are restricted to students, PhD students, teachers and trainers of public institutions. They cannot be used in projects that are financed by industrial partners.
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Important: Always add |
The flag "#SBATCH -L ansys" ensures that the scheduler starts jobs only, when licenses are available.
You can check the availability yourself: scontrol show lic
aa_ris a "ANSYS Academic Research License" with 4 inclusive tasks. Research jobs with more than 4 tasks cost additional "aa_r_hpc" licenses.aa_t_ais a "ANSYS Academic Teaching License" with a maximum of 4 tasks. These may be used only for student projects, student instruction and student demonstrations. Eligible users are allowed to activate these, by adding the flagCodeblock title Activation of the aa_t_a license -lpf $ANSYSLIC_DIR/prodord/license.preferences_for_students_and_teaching.xmlto the Ansys executable.
Example Jobscripts
specific support is provided by www.dynasupport.com |
General Information
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To obtain and checkout a product license please read Ansys Suite first. |
| executable / flag | meaning |
| lsdyna | (without flags) single precision, shared memory parallel |
| -dp | double precision |
| -mpp -dis -np 96 | distributed memory parallel on single 96-core-node |
| -mpp -dis -machines 1st_node_name:96:2nd_node_name:96 | distributed memory parallel on multiple 96-core-nodes |
To explore other settings, we recommend the general Ansys launcher GUI (start an interactive job as described in Usage Guide, call "launcher" on compute node after loading the Ansys module). Running the (test) job from this GUI will print out your specialized terminal command. Then you can copy the resulting command/flags to your specific Slurm job script file.
To stop an interactive LS-DYNA job press CTRL+C and then "stop"+ENTER.
Example Jobscript
The underlying input file PipeWhip.k can be found at www.dynaexamples.com/introduction/Introduction/example-26
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#!/bin/bash #SBATCH -t 00:10:00 #SBATCH --nodes=2 #SBATCH --tasks-per-node=4096 #SBATCH -L ansys #SBATCH -p medium40standard96:test #SBATCH --mailjob-type=ALL #SBATCH --job-name=castingname=Whip # format the machinelist srun hostname -s | uniq -c | awk '{printf $2":"$1":"}' > hostlist machinelist=`cat hostlist` module add ansys/2023r1 lsdyna <your personal flags and input file>i=ex_26_thin_shell_elform_16.k -dp -mpp -dis -machines $machinelist echo "############### ANSYS LS-DYNA finished ################" |
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