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Scientific Report 2007-2009<br />

Laboratories and Facilities of the Department of Physics<br />

F2. APE Laboratory<br />

The APE group is involved in research and development of High Performance Computing Architecture dedicated to<br />

theoretical physics applications (LQCD Lattice Quantum Chromodynamics, complex systems,...). Several generations of<br />

parallel supercomputers, known as ”APE machines”, have been built from the middle of 80’s. The last APE supercomputer,<br />

APENEXT is installed in our department from 2006 and it shows a peak performance equal to 10 TeraFlops.<br />

The APE group is currently composed of 4 staff<br />

people and 6 junior researchers with expertise ranging<br />

from hardware and software design to scientific<br />

applications coding and optimization. Current research<br />

activities focus on development of low latency<br />

and high bandwidth interconnection network<br />

for PC cluster (APENet+, 3-Dimensional Toroidal<br />

network optimized for LQCD computing platform),<br />

efficient use of (GP)GPU accelerators in theoretical<br />

physics (QUonG project) and design of specialized<br />

microarchitecture and systems optimized<br />

for scientific computing. Furthermore group members<br />

participate with leadership roles to EU FP7<br />

project (SHAPES, EURETILE) in the area of embedded<br />

systems and high performance computing.<br />

The laboratory is equipped with storage and computing<br />

servers hosting CAD software to support<br />

ASIC and hardware design. Multiple high end PC<br />

Figure 1: Laboratorio di Calcolo apeNEXT<br />

clusters are also present to test and develop application<br />

software. A complete soldering station as well as test and measurement instruments, (high performances digital<br />

oscilloscope and logic analyzer) are used to test and verify hardware prototypes.<br />

http://apegate.roma1.infn.it<br />

Related research activities: T3.<br />

<strong>Sapienza</strong> Università di Roma 198 Dipartimento di Fisica

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