Sites AT Cluster
| System Name | AT Cluster |
| Site | DLR |
| System Family | Sun Fire - Cluster |
| System Model | Fire V20z Cluster |
| Computer | Fire V20z Cluster, Opteron 2.4 GHz, Infiniband |
| Vendor | Sun Microsystems |
| Application area | Aerospace |
| Main Memory | 420 GB |
| Installation Year | 2005 |
| Operating System | Linux |
| Memory | 420 GB |
| Interconnect | Infiniband |
| Processor | AMD x86_64 Opteron 2400 MHz (4.8 GFlops) |