D7.2: Report on systems compliant with user requirements

This document presents an initial translation of the user requirements into architectures and configuration specifications for the European Petaflop/s systems. The analysis is based on the results of Deliverable D6.2.1 which presents the key requirements of grand challenge HPC applications across Europe. Deliverable D7.2 is organised into three main sections: first, the user requirements, coming from the applications, are analysed in terms of architecture specifications, trying to identify the ideal architectural characteristics for such applications. Then, the main architectural features of the HPC Systems that could represent production Petaflop/s systems in 2009/10 are briefly underlined. Finally, an initial match of the main applications analysed to the HPC architectural classes is attempted and some considerations and remarks are presented