Brief Description:
ANSYS is a commercial finite element code used to solve a wide variety
of real world engineering problems. It can model many different
phenomena including heat transfer, linear and nonlinear structural response,
buckling, modal analysis, full harmonic response, transient dynamic response,
electro-magnetic and fluid flow problems.
ANSYS
is available to all NCSA academic users on the following system:
- SGI/Altix (ember.ncsa.illinois.edu), version 12.1
- EMT64/Xeon (abe.ncsa.uiuc.edu), version 12
All users must be added to the access list for Ansys. Please send email
to skoric@ncsa.uiuc.edu to be added
to the access list for Ansys.
Commercial use of ANSYS is governed by the NCSA Private
Sector Program. Please contact Seid Koric at skoric@ncsa.uiuc.edu
for more information.
Interactive Access:
Interactive limits on SGI/Altix and EMT64/Linux are 30 minutes of CPU time and 500 MB RAM.
All interactive jobs that exceed these limits will be terminated.
For larger jobs please use
batch access. Your DISPLAY variable must be set to your local machine or you have to
have X11 tunneling enbled in you ssh, and you must have a proper xhost program
running on your local machine prior to
interactive Ansys Graphical User Interface (GUI) invocation.
- To use Ansys 12 interactively on SGI/Altix or EMT64/Linux type: /usr/apps/csm/scripts/ansys_script and chose interactive
job and GUI access.
Batch Jobs:
For large Ansys jobs that will exceed interactive limits please use batch
access, ie. type y when asked by /usr/apps/csm/scripts/ansys_script script if your job is a batch job.
You will be then asked by the script to choose wall clock, memory, and cpu resources/limits for
your batch job.
Finally the script will submit your job to the batch queues.
You must start your batch job from an empty directory that contains only Ansys
input file(s) (.log file), no other old Ansys files should be in the submit
directory. You can produce Ansys input deck either from interactive pre
processing GUI session (.log), or by typing/editing Ansys commands directly
into an ASCII input file. Make sure that your input deck has a proper Ansys
command syntax, and it contains proper pre and solution phases. For more
information about Ansys commands please consult Ansys On-line Help menus from
GUI. PCG and ICCG solvers run in parallel with Shared Memory Solvers
with limited scalability, currently with 8 CPU-s max on abe, and 16 CPU-s max on ember for version 12 .
You must have EQSL,PCG or EQSL,ICCG in your
input deck to invoke PCG and ICCG solvers. Running in parallel is enabled only in batch.
Ansys acadmic/research version 12 license have no restriction in terms domain sizes and has Multiphysics capability available, though higher level parallel capablities are not available in this license.
Batch scripts will copy your output and data files back to the submit
directory once your job is finished. If your are expecting large output files,
please submit your batch jobs from scratch spaces since home disk quota
is limited to 50GB on ember and abe. If you are using scratch spaces, please
note that scratch spaces are purged regularly, and therefore make sure to
secure your output files before they are purged.
Batch script will also archive and permanently store all your output
to your account on NCSA
Mass Storage Unitree.
Ansys batch archive can be found under ansys_batch/jobid_number.tar.gz
on your Unitree account, where jobid_number is a batch job id number
of your batch job, (can check this by typing llq while your job is queued
or is running).
- For more Computational Solid Mechanics Software Inquiries , please
visit CSM-FAQs
If you have problems accessing or using ANSYS at NCSA, please send email
to csm@ncsa.uiuc.edu.
