Cost of QCD simulations with n_f=2 dynamical Wilson fermions

Details Cost of QCD simulations with n_f=2 dynamical Wilson fermions Cost of QCD simulations with n_f=2 dynamical Wilson fermions

2002-03-12

arxiv.org/abs/hep-lat/0203009v2

Nucl.Phys.Proc.Suppl. 106 (2002) 193-194

Physics

High Energy Physics

High Energy Physics - Lattice

Contribution to Lattice2001 (panel discussion), 2 pages, 2 figures, eq 1 corrected

Scientific paper

10.1016/S0920-5632(01)01661-9

Cost estimates for simulations of full QCD with n_f=2 Wilson fermions by hybrid Monte Carlo are presented. The extrapolations are based on the average number of iterations of the iterative solver within the fermionic part of the HMC molecular dynamics, which is closely related to the minimal eigenvalue of M^+M The cost formula is determined as a product of the scaling functions of iterative solver and integrated autocorrelation time as function of the inverse lattice pseudoscalar mass. Timings by SESAM/TxL allow to fix the pre-factor. It is demonstrated that a 2-flavor dynamical determination of light hadron masses with a statistical precision comparable to the corresponding quenched results from CP-PACS can be an appropriate task for a 100 Tflops system.

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