Located amid the colonnades and Romanesque arches of the Torre Girona chapel, MareNostrum is one of the fastest supercomputers in the world.
No longer a place of worship, today the chapel is the site of supercomputing research into computer, Earth and life sciences. The machine has 10,240 IBM Power PC 970MP processors that have a combined peak performance of 94.21 teraflops.
In November 2010, it was ranked 118 in the list of the top 500 supercomputers in the world.
The supercomputer was built by the Spanish national and regional government and is used for research by a number of tech companies, including Microsoft and IBM.
Sonja Thompson started at TechRepublic in October 1999. She is a former Senior Editor at TechRepublic.