• Where can I check the status of ARCC Systems?

  • Click here!

• Where is the link to the latest announcements from arcc-announce?

  • Click here!

• I’m not getting messages from arcc-announce. How can I subscribe?

  • E-mail us at arcc-help@uwyo.edu and we can add you, or you can subscribe by going to https://lists.uwyo.edu/mailman/listinfo/arcc-announce

• Is there documentation on known issues? Can I add something to the documentation?

  • There is a document ARCC staff maintains for known issues. The documentation of known issues on Beartooth is here, and you may e-mail us at arcc-help@uwyo.edu at any time to update documentation.

Information for citing ARCC and our resources can be found here. Additionally, ARCC maintains a Facilities Statement available as both a 1 or 2 page document available for all researchers, here.

My UWyo user account is locked/disabled, can ARCC restore it so I can use ARCC resources?

• No, ARCC does not manage UWyo accounts, but to start troubleshooting, go here: Password Resets and Account Lock Outs

  • If you are an external collaborator, you will need to contact the UWIT Accounts Office to reset your password

  • Otherwise, call UW IT Helpdesk to have it unlocked at 766-HELP ( on campus: 6-4357)

  • For further information on UWyo accounts see UW Accounts FAQ

Does ARCC provide a document for researchers to reference in grant proposals?

• Yes! ARCC maintains a facilities statement that’s available in several formats here.

All project creations must be requested by a PI. Who counts as a PI?

• Per ARCC Policy: “Principal Investigators (PIs) are any University of Wyoming faculty member with an extended-term position with UW.  This designation does not extend to Adjunct Faculty.”

• Detailed information on PI qualifications may be found on our policy page here and any information on our published policy page should overrides information on the wiki which, may at times, be outdated.

• PIs may read more about PI Responsibilities on the policy page (Under General Policies: 1 -> User Responsibilities: B -> PI Responsibilities: iii)

Do I need a smart phone to use two-factor for ARCC services?

• No, there are other options:

  • You have to purchase a Yubikey and then self enroll the key or have it set up by UWIT.

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

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

How do I get access to the cluster?

PIs (Principal Investigators on research) may request a cluster project by filling out the Request New Project form and selecting the cluster name in the ‘If known, resources' section. Please see ARCC HPC Policies and HPC/HPS Account Policies on our policy page for who qualifies as a PI.

May I have sudo access to the cluster?

Users are not permitted to have sudo access. Software can be installed anywhere that users have read/write/access (usually their associated /home, /gscratch and /project spaces. Software should be installed to one of these users associated locations.

Users can also email arcc-help@uwyo.edu for assistance.

Medicinebow SSH Login requires setting up SSH keys on your local client and directions are specific to the operating system running on your local machine.

Information about SSH Keys and how they work can be found here
Windows specific directions for SSH key setup can be found here
Mac specific directions for SSH key setup can be found here
Linux specific directions for SSH key setup can be found here

If you have already set up keys and are still unable to access Medicinebow, please e-mail ARCC-help@uwyo.edu

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

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

Yes. Our list of Medicinebow software can be found here.

You can check by running an arccquota command to get a list of quotas for your /home, /gscratch, and associated /project directories, or navigating to the specific directory you’d like to check the size of, and running du -h -max-depth=1

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.

Slurm is system that manages jobs on ARCC HPCs. To learn more about Slurm, click here.

There are a number of ways to check your jobs and get information about them. Depending on how your job was submitted, you may be provided a log or error files after the job runs.

With OnDemand: If the job is currently running, you can check your jobs on OnDemand by clicking on Jobs in the yellow drop down menu at the top.
Using Command Line (over SSH): Run an sacct specifying a start and end date to get jobs that ran over a specific timeframe. See here for more information on running sacct commands.

Wildiris is now part of the Medicinebow cluster. Users logging into Medicinebow with an arcc-only (non-UWYO) account should follow instructions here.

I’m having trouble logging into Medicinebow OnDemand

Please reference the ARCC Login Page and how to log in here.

I’m having trouble SSH’ing to Medicinebow

New users trying to ssh for the first time without configuring SSH authentication will recieve an error message as follows:
ssh <username>@medicinebow.arcc.uwyo.edu: Permission denied (publickey)

ARCC has changed the way users authenticate over SSH to Medicinebow and authentication must be configured with SSH keys. See this page on configuring SSH keys to SSH into Medicinebow.

How do I move my data from Beartooth to Medicinebow?

The easiest method for moving data from Beartooth to Medicinebow is to use Globus. Instructions for logging into and configuring Globus and moving data between Beartooth and Medicinebow may be found here.
Alternative methods for moving data are detailed here.

I am no longer able to access Beartooth when I could previously

Beartooth is scheduled for end of life/decommission effective January 2, 2025. Users should no longer be able to access Beartooth after this date.

Users with old projects on Beartooth should migrate to Medicinebow. Migration Request forms may be filled out for projects here, on our portal.

I need storage but I’m not sure whether I need Alcova, Pathfinder or something else. How do I know which one I need?

ARCC offers two main storage services outside of HPC data storage: Alcova and Pathfinder. **Researchers should be aware that neither storage solution is currently approved to store HIPAA data.

• Alcova is likely appropriate for most users looking for data storage that functions similar to a mapped drive (like /warehouse storage from IT) but specifically for research data.

• Pathfinder is more appropriate as a cloud based option for secondary backup and archival of data, storing and serving static website content, large data set analytics, and to facilitate the open sharing of data through a web URL.

• If you’re still not sure, e-mail us at arcc-help@uwyo.edu. We will need to talk to you about your particular use case to identify the most appropriate storage solution.

There are a number of ways to move data, dependent on where it is currently (moving from) and where you want to move it to. Your options are detailed here: Data Moving and Access but newer ARCC users who are less familiar with HPC and Command Line Interface may elect to move data themselves using graphical user interface options. ARCC EUS recommends using Globus.

How can I get data storage on Alcova?

PIs (Principal Investigators on research) may request an Alcova project by filling out the Request New Project form and selecting ‘Data Storage’ in the requested resources section and listing Alcova in the ‘If known, resources' section. Please see ARCC HPC Policies and HPC/HPS Account Policies on our policy page for who qualifies as a PI.

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

Users will need to use the UWyo VPN (wyosecure) to get onto the UWyo network.

• Connecting to ARCC Data Portal/Alcova

I would like to add user(s) to my Alcova Project

Only the project PI may make changes to Alcova Project permissions. If you are not the PI on the project, ARCC will need to obtain the PI’s approval to make changes to project permissions and add members. If you are the project PI, you may request a project change through our portal.

I can’t access my Alcova data at alcova.arcc.uwyo.edu/<projectname>

Alcova was migrated to the ARCC Data Portal effective June 2024. Please see this page for information on accessing the your new project space.

If this doesn’t help, please contact ARCC at arcc-help@uwyo.edu so we may troubleshoot your issue.

What is an S3 Bucket?

Imagine a large box in which you can store things. This box lets you put things in, take things out, and share things with our friends. An S3 bucket is similar to this “big box” concept, but to store files on the internet. S3 stands for Simple Storage Service (S3) protocol originally developed by Amazon. S3 works on object storage through a service called Ceph, provided by Red Hat Enterprise Linux. You can access our files at any time, and decide who can see or use them in the S3 bucket. Bucket permissions are typically set to public or private. If the bucket is private it’s only accessible to those with a set of keys.

Pathfinder storage is accessed as S3 storage, and you should use an S3 client to connect to it, or an application that supports the S3 protocol. A list of S3 clients can be found here.

Pathfinder data can be shared to anyone with a URL. Information on sharing Pathfinder data using a URL can be found here. If you do not wish to share your data openly through a URL, users may be added to access Pathfinder project data by the project’s PI.

Only the project PI may change project permissions. If you are not the PI on the project, ARCC will need to obtain the PI’s approval to make changes to project permissions and add members. If you are the project PI, you may request a project change through our portal.