QPACE 2 and Domain Decomposition on the Intel Xeon Phi
Paul Arts, Jacques Bloch, Peter Georg, Benjamin Glaessle, Simon Heybrock, Yu Komatsubara, Robert Lohmayer, Simon Mages, Bernhard Mendl, Nils Meyer, Alessio Parcianello, Dirk Pleiter, Florian Rappl, Mauro Rossi, Stefan Solbrig, Giampietro Tecchiolli, Tilo Wettig, Gianpaolo Zanier
Eurotech HPC, Via F. Solari 3/A, 33020 Amaro, Italy
title={QPACE 2 and Domain Decomposition on the Intel Xeon Phi},
author={Arts, Paul and Bloch, Jacques and Georg, Peter and Glaessle, Benjamin and Heybrock, Simon and Komatsubara, Yu and Lohmayer, Robert and Mages, Simon and Mendl, Bernhard and Meyer, Nils and Parcianello, Alessio and Pleiter, Dirk and Rappl, Florian and Rossi, Mauro and Solbrig, Stefan and Tecchiolli, Giampietro and Wettig, Tilo and Zanier, Gianpaolo},
We give an overview of QPACE 2, which is a custom-designed supercomputer based on Intel Xeon Phi processors, developed in a collaboration of Regensburg University and Eurotech. We give some general recommendations for how to write high-performance code for the Xeon Phi and then discuss our implementation of a domain-decomposition-based solver and present a number of benchmarks.
