LS-DYNA

LS-DYNA#

Ansys LS-DYNA is the industry-leading explicit simulation software used for applications like drop tests, impact and penetration, smashes and crashes, occupant safety, and more.

More information about LS-DYNA can be found on the Ansys Website.

Running LS-DYNA#

Note

More details about using the old versions of Ansys for the first time and setting license server details can be found in the License Set-up for Legacy Ansys Modules section.

Batch job examples#

Guidance provided by Oasys suggests that SMP can scale to ~8 cores, and that the Massively Parallel Processing (MPP) version should be used for larger problems.

Remember to replace <port>@<host> with a suitable value for your license.

SMP Single Precision (4 cores)#

#!/bin/bash
#$ -cwd -V
#$ -l h_rt=1:00:00
#$ -l h_vmem=4.8G
#$ -m be
#$ -pe smp 4
module add ansys/2023R1
export ANSYSLMD_LICENSE_FILE=<port>@<host>
export LSTC_LICENSE=ANSYS
lsdyna I=example.k ncpu=$NSLOTS

SMP Double Precision (4 cores)#

#!/bin/bash
#$ -cwd -V
#$ -l h_rt=1:00:00
#$ -l h_vmem=4.8G
#$ -m be
#$ -pe smp 4
module add ansys/2023R1
export ANSYSLMD_LICENSE_FILE=<port>@<host>
export LSTC_LICENSE=ANSYS
lsdyna -dp I=example.k ncpu=$NSLOTS

MPP Single Precision (on a whole node)#

#!/bin/bash
#$ -cwd -V
#$ -l h_rt=1:00:00
#$ -m be
#$ -l nodes=1
module add ansys/2023R1
export ANSYSLMD_LICENSE_FILE=<port>@<host>
export LSTC_LICENSE=ANSYS
lsdyna -dis -np $NSLOTS -lsdynampp I=example.k

MPP Double Precision (on a whole node)#

#!/bin/bash
#$ -cwd -V
#$ -l h_rt=1:00:00
#$ -m be
#$ -l nodes=1
module add ansys/2023R1
export ANSYSLMD_LICENSE_FILE=<port>@<host>
export LSTC_LICENSE=ANSYS
lsdyna -dis -np $NSLOTS -lsdynampp -dp I=example.k
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