A simple method to optimize HMC performance

We present a practical strategy to optimize a set of Hybrid Monte Carlo parameters in simulations of QCD and QCD-like theories. We specialize to the case of mass-preconditioning, with multiple time-step Omelyan integrators. Starting from properties of the shadow Hamiltonian we show how the optimal s...

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Detalles Bibliográficos
Autores principales: Bussone, Andrea, Della Morte, Michele, Drach, Vincent, Hansen, Martin, Hietanen, Ari, Rantaharju, Jarno, Pica, Claudio
Lenguaje:eng
Publicado: SISSA 2016
Materias:
Particle Physics - Lattice
Acceso en línea:https://dx.doi.org/10.22323/1.256.0260
http://cds.cern.ch/record/2223650
Descripción
Sumario:We present a practical strategy to optimize a set of Hybrid Monte Carlo parameters in simulations of QCD and QCD-like theories. We specialize to the case of mass-preconditioning, with multiple time-step Omelyan integrators. Starting from properties of the shadow Hamiltonian we show how the optimal setup for the integrator can be chosen once the forces and their variances are measured, assuming that those only depend on the mass-preconditioning parameter.

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