Europa, is a high throughput computing (HTC) cluster that is from a retired XSEDE/TACC HPC system, Stampede1, named after the moon of Jupyter. It is the Texas Research and Education Cyberinfrastructure Services (TRECIS) center in OIT’s is a Cyberinfrastructure Research Computing (CIRC) cluster built for providing access to the Live Computing and Research Support (LCARS) community, all UT Dallas students, faculty, and staff etc. To join, fill out our short survey at At the end of the survey, you will receive a link to join the Teams group.

Europa node setup

Europa is set up to run only one job per node. When a user submits a job, they will be given exclusive access to the entire node, regardless of how many cores or how much memory is requested. The following partitions are available by default:

Queue Name Number of nodes Cores/Threads (CPU Architecture) Memory Time Limit ([d-]hh:mm:ss)



16 (Intel Sandy Bridge)

32 GB


Europa storage

Europa has multiple user-writable storage directories, accessible from the head node ( and the compute nodes:

Directory Filesystem Type Network Speed Filesystem Size User Quota (Soft/Hard) Backup Frequency



25 gigabit/s

1 TB





56 gigabit/s

128 TB



Using Europa

Logging in

Europa is accessed via SSH or Open OnDemand. Methods for connecting vary by operating systems, see the CIRC documentation website. Once your account is activated, you can connect to Europa at (europa) from a terminal window or (ood) from a web browser. There is no VPN or campus network needed to access europa, github account or ssh key are the only requirements prior to the creation of europa or ood account. All CIRC HPC/HTC clusters are Linux systems, while Open OnDemand provides some gui-based interactions.

For example, in a typical terminal client run the command:

ssh <GitHubID>
Point your web browser to
Enter your github userid and PW for trecis ood access.

More information on setting up SSH access to CIRC machines on your computer can be found here.

Open OnDemand on Europa

Open OnDemand is a graphical, web based interface to the cluster. It lets you run Jupyter Notebook, VS Code, R Studio and other graphical applications.

Connecting to Open OnDemand (OOD)

To connect, point your web browser to

and login with your github username and password . You will be presented with a dashboard page with top menu bar that provides access to the power and capabilities within the ood interface.