Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Heybrock, Simon"'
Autor:
Bali, Gunnar S., Collins, Sara, Heybrock, Simon, Löffler, Marius, Rödl, Rudolf, Söldner, Wolfgang, Weishäupl, Simon
Publikováno v:
Phys.Rev.D 108, 034512 (2023)
We determine the axial, scalar and tensor isovector charges of the nucleon, sigma and cascade baryons as well as the difference between the up and down quark masses, $m_u-m_d$. We employ gauge ensembles with $N_f=2+1$ non-perturbatively improved Wils
Externí odkaz:
http://arxiv.org/abs/2305.04717
Publikováno v:
Journal of Neutron Research, vol. Pre-press, no. Pre-press, pp. 1-13, 2020
Scipp is heavily inspired by the Python library xarray. It enriches raw NumPy-like multi-dimensional arrays of data by adding named dimensions and associated coordinates. Multiple arrays are combined into datasets. On top of this, scipp introduces (i
Externí odkaz:
http://arxiv.org/abs/2010.00257
Autor:
Bali, Gunnar S., Collins, Sara, Glässle, Benjamin, Heybrock, Simon, Korcyl, Piotr, Löffler, Marius, Rödl, Rudolf, Schäfer, Andreas
We have implemented a new way of computing three-point correlation functions. It is based on a factorization of the entire correlation function into two parts which are evaluated with open spin- (and to some extent flavor-) indices. This allows us to
Externí odkaz:
http://arxiv.org/abs/1711.02384
The setup cost of a modern solver such as DD-\alpha AMG (Wuppertal Multigrid) is a significant contribution to the total time spent on solving the Dirac equation, and in HMC it can even be dominant. We present an improved implementation of this algor
Externí odkaz:
http://arxiv.org/abs/1601.03184
We present details of our implementation of the Wuppertal adaptive algebraic multigrid code DD-$\alpha$AMG on SIMD architectures, with particular emphasis on the Intel Xeon Phi processor (KNC) used in QPACE 2. As a smoother, the algorithm uses a doma
Externí odkaz:
http://arxiv.org/abs/1512.04506
Autor:
Arts, Paul, Bloch, Jacques, Georg, Peter, Glaessle, Benjamin, Heybrock, Simon, Komatsubara, Yu, Lohmayer, Robert, Mages, Simon, Mendl, Bernhard, Meyer, Nils, Parcianello, Alessio, Pleiter, Dirk, Rappl, Florian, Rossi, Mauro, Solbrig, Stefan, Tecchiolli, Giampietro, Wettig, Tilo, 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 co
Externí odkaz:
http://arxiv.org/abs/1502.04025
Autor:
Heybrock, Simon1 (AUTHOR) simon.heybrock@ess.eu, Wynen, Jan-Lukas1 (AUTHOR) jan-lukas.wynen@ess.eu, Vaytet, Neil1 (AUTHOR) neil.vaytet@ess.eu
Publikováno v:
Journal of Neutron Research. 2023, Vol. 25 Issue 2, p65-84. 20p.
Autor:
Heybrock, Simon, Joó, Bálint, Kalamkar, Dhiraj D., Smelyanskiy, Mikhail, Vaidyanathan, Karthikeyan, Wettig, Tilo, Dubey, Pradeep
The gap between the cost of moving data and the cost of computing continues to grow, making it ever harder to design iterative solvers on extreme-scale architectures. This problem can be alleviated by alternative algorithms that reduce the amount of
Externí odkaz:
http://arxiv.org/abs/1412.2629
Autor:
Heybrock, Simon
Publikováno v:
PoS Lattice2010:322,2010
In analogy to Neuberger's double-pass algorithm for the Conjugate Gradient inversion with multi-shifts we introduce a double-pass variant for BiCGstab(ell). One possible application is the overlap operator of QCD at non-zero chemical potential, where
Externí odkaz:
http://arxiv.org/abs/1010.2592
Autor:
Bloch, Jacques C. R., Heybrock, Simon
Publikováno v:
Comput.Phys.Commun.182:878-889,2011
We present an acceleration of the well-established Krylov-Ritz methods to compute the sign function of large complex matrices, as needed in lattice QCD simulations involving the overlap Dirac operator at both zero and nonzero baryon density. Krylov-R
Externí odkaz:
http://arxiv.org/abs/0912.4457