QPACE -- a QCD parallel computer based on Cell processors

Details QPACE -- a QCD parallel computer based on Cell processors QPACE -- a QCD parallel computer based on Cell processors

2009-11-11

arxiv.org/abs/0911.2174v3

PoS LAT2009:001,2009

Physics

High Energy Physics

High Energy Physics - Lattice

21 pages. Poster by T. Maurer and plenary talk by D. Pleiter presented at the "XXVII International Symposium on Lattice Field

Scientific paper

QPACE is a novel parallel computer which has been developed to be primarily used for lattice QCD simulations. The compute power is provided by the IBM PowerXCell 8i processor, an enhanced version of the Cell processor that is used in the Playstation 3. The QPACE nodes are interconnected by a custom, application optimized 3-dimensional torus network implemented on an FPGA. To achieve the very high packaging density of 26 TFlops per rack a new water cooling concept has been developed and successfully realized. In this paper we give an overview of the architecture and highlight some important technical details of the system. Furthermore, we provide initial performance results and report on the installation of 8 QPACE racks providing an aggregate peak performance of 200 TFlops.

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