UT Dallas CIRC systems The Cyberinfrastructure Research Computing (CIRC) team at UT Dallas manages three main clusters: Ganymede, a condo cluster with several free general-use queues. Ganymede2, the successor to Ganymede. Primarily a condo cluster with buy-ins as the primary source of hardware. Europa, a cluster with compute nodes from retired supercomputer Stampede1. Version Control Ganymede