LS-DYNA

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Brief Description:

LS-DYNA is a general purpose transient dynamic finite element program capable of simulating complex real world problems. Implicit, Explicit, Shared Memory Parellel (SMP) and MPP imbedded in one code.

LS-DYNA (double precision) is available to all NCSA academic users on the following system:

• SGI Altix/linux (ember.illinois.uiuc.edu) mpp version 971
  
• linux86_64 (abe.ncsa.uiuc.edu) mpp version 971
  

All new users must be added to the LS-DYNA access lists. Please send email to skoric@ncsa.uiuc.edu to be added to the access lists for LS-DYNA.

Commercial use of LS-DYNA is governed by the NCSA Private Sector Program. Please contact Seid Koric at skoric@ncsa.uiuc.edu for more information. 

Using LS-DYNA on ember and abe

• Interactve LSPrePost GUI Access (abe only)

  X11 emulator software like Exceed 3D with OpenGL support has to be installed and run on your local PC machine. You must ssh with X11 tunneling option enabled when logging to cobalt or abe. To access LSPrePost GUI executable please type
  on cobalt:
  /usr/apps/csm/LS_DYNA/bin/lsprepost2_4.exe
  on abe:
  /usr/apps/csm/mpp_dyna_hp_mpi/bin/lsprepost2_4.exe
  
  Any interactive GUI session that exceeds above interactive limits will be terminated. Access to LSPrePost GUI might be very slow due to networking latencies between your site and NCSA. In that case try to obtain LSPrePost software at your local site and use only solvers at NCSA, taking advantage of large parallel computational resources.

MPP Batch Jobs (ember and abe)

Batch only access provided through mppdyna_batch script. MPP DYNA 971 is using an MPI solver which generally scales more efficiently than an SMP solver. It requires at least one command line argument. The most common usage is:  

/usr/apps/csm/scripts/mppdyna_batch i=input_file_name.k

Every MPP-DYNA job must start from a clean directory with a new and unique batch job name (only input fiiles that are necessary for a new MPP-DYNA job must be in the directory). If large output files are expected, please submit your jobs from a clean directory on your scratch-global space. Do not use your home directory to submit large batch jobs when expecting large output files. The home directory quota on ember and abe is 50 GB. Do not use npcu= or memory= as command line options. You will be asked by the batch script for number of cpus (ember) and compute nodes and cores (abe) for MPI solver, as well as for wall clock and memory requirments for your batch job. All batch environment will be then set accordingly. If you have a pfile, make sure not to specify any directory directives in it, your mpp dyna batch job will run by default on a working directory on a batch host where the performance is best. Check the status of your submitted job with qs -u your_login . Once the mpp-dyna batch job finishes, your output files will be copied back to the directory from where your job was submitted. If your output files are in scratch-global, make sure to secure them to a safe place before they are purged.

For more Computational Solid Mechanics Software Inquiries , please visit CSM-FAQs

If you have problems accessing or using LS-DYNA at NCSA, please send email to csm@ncsa.edu.