Analysis of Nf=2 and Nf=2+1 dynamical flavour Stout-Link Non-perturbative Wilson Clover (SLiNC) Fermions of the QCDSF Collaboration.
Study of ratios of the semi-leptonic pseudoscalar decay constant and the axial coupling constant of baryons
Study of SU(3) flavour symmetry
Study of semi-leptonic hyperon decays
Implementation of Lattice Quantum Chromodynamics (LQCD) application programs on a new computer architecture QPACE
High-performance implementation of the O(a) improved Wilson Clover Dirac operator with even-odd preconditioning for the Cell processor.
Analysis of UKQCD/QCDSF Nf=2 flavour dynamical Wilson Fermions on IBM QS22 Cell blades available at Forschungszentrum Jülich.
Ported SciDAC QDP++ Chroma to the Cell Processor (PowerXCell 8i processor). And with this in principle to any other processor featuring a 2 level architecture with one fat core and a number of accelerators. With the following restrictions:
Main application like Chroma must compile on the fat core
Accelerators must be able to access the memory address space of the fat core (might be asynchronously through DMA)
Some code overlay technique must be available for the accelerators
The code design includes a code generator to convert QDP++ expression templates into C++ code. This code can then be compiled with any suitable SPU C++ compiler. Here tested with SPU GNU C++ 4.3
A build of Chroma is available with this implementation of QDP++.
Programmes
APR-JUN 2010 HPC Europa2 - Transnational Access Programme for High Performance Computing, EPCC, University of Edinburgh (UK)
QDP++ on PowerXCell 8i processor: First working implementation (..full article to be published..)
SEP-NOV 2009 HPC Europa2 - Transnational Access Programme for High Performance Computing, EPCC, University of Edinburgh (UK)
QDP++ on PowerXCell 8i processor: Proof-of-principle achieved (Abstract) (..full article to be published..)
Nucleon and Hyperon Axial Charges and Momentum Fractions for Nf=2+1Dynamical O(a) Improved Wilson Fermions - Lattice Conference 2010 June 2010, Villasimius, Sardinia, Italy. (PDF)
Hadrons on the SPU and Chroma/QDP++ on Cell - TransRegio 55 SFB Meeting January 2010 at University Wuppertal (PDF)
Recent Publications
Frank Winter, Roger Horsley, Dirk Pleiter, James Zanotti: "QDP++/Chroma on IBM PowerXCell 8i Processor", HPC-Europa2 Annual Book 2010
Frank Winter, Roger Horsley, Dirk Pleiter, James Zanotti: "QCD Data Parallel for Multicore Acceleration and Semi-Leptonic Octet Hyperon Decays", HPC-Europa2 Annual Book 2009 [ref]