Frequently Asked Questions

This page contains frequently asked questions. If users have any trouble, questions, concerns, or suggestions, feel free to contact ARCC.


General ARCC Troubleshooting

Do I have to have a smartphone to use two-factor for ARCC services?

  • No, there are other options:

    • You have to purchase a Yubikey from UWIT.

    • You can enroll in any phone number or device on Duo.

      • When logging into Teton using the landline method, type “<your password>, phone“ and your enrolled number will get a call.

My UWyo user account is locked/disabled, can ARCC restore it so I can use the petaLibrary and/or Teton?


I am having trouble logging into Teton.

  • Can you log into other Uwyo resources?

    • If no, contact IT Helpdesk.

  • Is your 2nd-factor authentication working? Test on

  • There is a known issue on Teton that may affect your login. Wait until the top of an hour (e.g. 1 pm) and try again. We have an automatic process to fix this issue that runs every hour on the hour.

  • If you are still having problems email contact us.

How do I access Teton when I am not on the UWyo network?

  • Teton's login nodes are on the Science DMZ network outside of UWyo firewalls. Meaning you can log into Teton from anywhere as long as you have an internet connection and a terminal or ssh client.

How do I run my code on Teton?

  • You must submit your code to the job scheduler. Running code on login nodes is not permitted.

    • For more information about the job scheduler please see our page on Slurm.

How do I find out what modules/packages are available on Teton?

  • While logged into Teton, executing the command "module spider" will list all modules installed on Teton.

1 2 3 4 5 6 7 8 9 10 11 $ module spider To learn more about a package execute: $ module spider Foo where "Foo" is the name of a module. To find detailed information about a particular package you must specify the version if there is more than one version: $ module spider Foo/11.1

May I have sudo access on Teton?

  • Users will never have sudo access. Email to request whatever would you need sudo access for.

My Teton home directory is full, can I get more space?

  • Rarely do we increase home directory space, please clean up any unnecessary files first. If the problem persists, email to describe your issue.


How do I access my petaLibrary allocation when I am not on the UWyo network?

  • Users will need to use the UWwyo VPN to get onto the UWyo network.