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TWQCD’s dynamical DWF project

Ting-Wai Chiu, Tian-Shin Guu, Tung-Han Hsieh, Chao-Hsi Huang, Yu-Ying Lee, Yao-Yuan Mao, Kenji Ogawa, Po-Kai Tseng
Department of Physics, and Center for Theoretical Sciences, National Taiwan University, Taipei 10617, Taiwan
arXiv:0911.5029 [hep-lat] (26 Nov 2009)

@article{chiu2009twqcd,

   title={TWQCD’s dynamical DWF project},

   author={Chiu, T.W. and Guu, T.S. and Hsieh, T.H. and Huang, C.H. and Lee, Y.Y. and Mao, Y.Y. and Ogawa, K. and Tseng, P.K.},

   journal={Arxiv preprint arXiv:0911.5029},

   year={2009}

}

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We present an overview of our project of simulation of unquenched lattice QCD with optimal domain-wall quarks, using a GPU cluster currently constituting of 16 units of Nvidia Tesla S1070 plus 64 graphic cards with Nvidia GTX285 (total 128 GPUs with 128 Teraflops peak), attaining sustained computing power of 15.36 Teraflops. The first production run in two-flavor QCD is on-going, using the Iwasaki gauge action on a set of lattices with sizes $ 16^3 times (32,10,8,6,4) times (16,32) $ at the lattice spacing $ a sim 0.1$ fm, with eight sea quark masses down to $ m_pi simeq 200 $ MeV. We outline our simulation algorithm, and describe the present status of the production run. Preliminary results of pseudoscalar mass and decay constant are also presented.
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