CeSViMa (Supercomputing and Visualization Center of Madrid of the Universidad Politécnica de Madrid - UPM) provides resources for high performance computing to national and international research projects of all research areas. Currently, CeSViMa is integrated into the Spanish Supercomputing Network (RES), is included into the directory of Infrastructures and Laboratories Network of the Community of Madrid and is a member of the e-Ciencia Spanish Network. CeSViMa manages the most powerful supercomputer of Spain (2011): Magerit. It also has been the Spanish supercomputer that has reached the second better position in history on the TOP500 list of world's most powerful supercomputers. Moreover, in November 2007, Magerit ranked position 275 on the Green500 list of more respectful supercomputers with environment.