GUST v2 Frequently Asked Questions

How does the license manager work?

• AeroSoft uses the Elan license manager. Most licenses issued by AeroSoft are floating licenses. In other words, a single seat allows users to run on any platform, as long only one gasp flow solver executable per seat is executing at a single time. A single computer can act as the license server for many other computers. If the license server computer is on the same local subnet as the machine on which to run gasp, then no special set up or configuration is required. Once the license server is up and running, you can test the accessibility on other machines by running the command asi_elmusage (found in same directory as gasp). If the asi_elmusage command is unable to find a license server, you can force GUST to search a specific machine for a valid key by using the environment variable AEROSOFT_ELMHOST. (e.g. setenv AEROSOFT_ELMHOST @licenseserver.mycompany.com)

I installed the key and started the license server, but the GUST v2 flow solver will not run?

• Check that the ELM license daemon is running (this is done on the machine that is running the license server).
• Run the command asi_elmusage to verify available keys (this should be done from the machine you are running GUST on).
• Send the message that you get from asi_elmusage and the message that GUST prints out to support@aerosft.com

What are the requirements to run GUST v2 in parallel across a network?

• AEROSOFT_HOME must be the same on all machines.
• The full path to problem must be the same.
• The user name must be the same on each machine within the network.
• The user must be able to do a remote shell login without prompting for a password.

What is the difference between export and domestic versions of GUST?

• Due to government control, AeroSoft is not allowed to make certain features of the GUST code available to customers outside the U.S. and to non U.S. citizens.
• The export GUST version (GUSTex) does not contain non-equilibrium vibrational energy modeling.

Decomp is crashing and says it can't find the grid file?

• On the IBM SP3 and some Cray's, the complete path for the database/griddir and gridfile in the grids section must be used. No relative paths.

AeroSoft, Inc. 2000 Kraft Drive, Suite 1400 Blacksburg, VA 24060 (540) 557-1900 Fax (540) 557-1919 Email questions@aerosoftinc.com