Sites MareNostrum
| System Name | MareNostrum |
| Site | Barcelona Supercomputing Center |
| System Family | IBM Cluster |
| System Model | BladeCenter JS20 CLuster |
| Computer | JS20 Cluster, PPC 970, 2.2 GHz, Myrinet |
| Vendor | IBM |
| URL | http://www.bsc.org.es/ |
| Application area | Not Specified |
| Main Memory | 9600 GB |
| Installation Year | 2005 |
| Operating System | SuSE Linux Enterprise Server 9 |
| Memory | 9600 GB |
| Interconnect | Myrinet |
| Processor | PowerPC 970 2200 MHz (8.8 GFlops) |