Evolving ATLAS Computing For Today's Networks
S. Campana, Fernando Harald Barreiro Megino, S. Jézéquel, G. Negri, Cédric Serfon, Ikuo UEDA · Journal of Physics Conference Series · 2012
The ATLAS computing infrastructure was designed many years ago based on the assumption of rather limited network connectivity between computing centres. ATLAS sites have been organized in a hierarchical model, where only a static subset of all possible network links can be exploited and a static subset of well connected sites (CERN and the Tier-1s) can cover important functional roles such as hosting master copies of the data.