Implementing the Generalised Hybrid Monte-Carlo Algorithm

Details Implementing the Generalised Hybrid Monte-Carlo Algorithm Implementing the Generalised Hybrid Monte-Carlo Algorithm

1997-09-24

arxiv.org/abs/hep-lat/9709108v1

Nucl.Phys.Proc.Suppl. 63 (1998) 949-951

Physics

High Energy Physics

High Energy Physics - Lattice

Contribution to Lattice97 proceedings: 3 pages, LaTeX2e, 1 postscript figure, uses espcrc2.sty

Scientific paper

10.1016/S0920-5632(97)00951-1

UKQCD's dynamical fermion project uses the Generalised Hybrid Monte-Carlo (GHMC) algorithm to generate QCD gauge configurations for a non-perturbatively O(a) improved Wilson action with two degenerate sea-quark flavours. We describe our implementation of the algorithm on the Cray-T3E, concentrating on issues arising from code verification and performance optimisation, such as parameter tuning, reversibility, the effect of precision, the choice of matrix inverter and the behaviour of different molecular dynamics integration schemes.

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