A QUDA-branch to compute disconnected diagrams in GPUs

Constantia Alexandrou, Kyriacos Hadjiyiannakou, Giannis Koutsou, Alexei Strelchenko, Alejandro Vaquero
Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus, and Computation-based Science and Technology Research Center, Cyprus Institute, 20 Kavafi Str., Nicosia 2121, Cyprus
arXiv:1401.6750 [hep-lat], (27 Jan 2014)


   author={Alexandrou}, C. and {Hadjiyiannakou}, K. and {Koutsou}, G. and {Strelchenko}, A. and {Vaquero}, A.},

   title={"{A QUDA-branch to compute disconnected diagrams in GPUs}"},

   journal={ArXiv e-prints},




   keywords={High Energy Physics – Lattice},




   adsnote={Provided by the SAO/NASA Astrophysics Data System}


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Although QUDA allows for an efficient computation of many QCD quantities, it is surprinsingly lacking tools to evaluate disconnected diagrams, for which GPUs are specially well suited. We aim to fill this gap by creating our own branch of QUDA, which includes new kernels and functions required to calculate fermion loops using several methods and fermionic regularizations.
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