The MareNostrum supercomputer with the project's director, Mateo Valero (2007)
|Location||Barcelona Supercomputing Center|
|Architecture||PPC64 (IBM PowerPC 970)|
|Ranking||TOP500: 465, June 2012|
MareNostrum (Catalan: [ˌmaɾəˈnɔstɾum], Spanish: [ˈmaɾeˈnostɾun]) is a supercomputer in the Barcelona Supercomputing Center, the second most powerful in Spain. It was presented by IBM and María Jesús San Segundo, the Spanish Minister of Education and Science. It's one of the seven supercomputers of the Spanish Supercomputing Network.
The computing nodes of MareNostrum communicate primarily through a high bandwidth, low latency Myrinet network consisting of integrated Myrinet adapters on each server blade and switched fabric of 12 Myrinet switches. In addition, there is a more traditional local area network consisting of Gigabit Ethernet adapters and five Gigabit Ethernet switches (one Force10 E600 and four Cisco 3550s). Servers are connected to this network by over 180 Ethernet switching blades made by BLADE Network Technologies. The MareNostrum supercomputer has 20 TB of RAM and 280 TB of external disk storage for persistent storage.
MareNostrum features BladeCenter JS21 blade servers running SUSE Linux Enterprise Server 10SP2. It is capable of 62.63 teraflops and a peak performance of 94.21 teraflops according to the LINPACK benchmark. It occupies only 120 m² (less than half a basketball court) and weighs 40,000 kg. The original installation was largely constructed in two months in San Fernando de Henares, Madrid (Madrid) and was installed in the Barcelona Supercomputing Center in Barcelona. It has since been upgraded with additional processors to reach the current total.
The supercomputer is used in human genome research, protein research, astrophysical simulations, weather forecasting, geological or geophysical modeling, and the design of new drugs. It was booted up for the first time on 12 April 2005, and is available to the national and international scientific community.
Mare Nostrum ("our sea") was the Roman name for the Mediterranean Sea. The supercomputer is housed in the deconsecrated Chapel Torre Girona at the Polytechnic University of Catalonia, Barcelona, Spain.
Image gallery 
See also 
- MareNostrum: A new concept in Linux supercomputing, Power Architecture Community Newsletter, 15 February 2005
-  MareNostrum System Architecture, Barcelona Supercomputing Center website
- IBM BladeCenter and POWER Microprocessor Fuel Europe's Most Powerful Supercomputer IBM press release, 5 November 2004
- BLDG|BLOG, War/Photography: An Interview with Simon Norfolk
- IBM's MareNostrum page
- Barcelona Supercomputing Center
- Top 500 supercomputers
- Slashdot: Building The MareNostrum COTS Supercomputer
- MoDEL Database