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Hybrid particle‐field molecular dynamics simulations: Parallelization and benchmarks
Author(s) -
Zhao Ying,
De Nicola Antonio,
Kawakatsu Toshihiro,
Milano Giuseppe
Publication year - 2012
Publication title -
journal of computational chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.907
H-Index - 188
eISSN - 1096-987X
pISSN - 0192-8651
DOI - 10.1002/jcc.22883
Subject(s) - molecular dynamics , computer science , computational science , field (mathematics) , parallel computing , scheme (mathematics) , particle (ecology) , decomposition , statistical physics , physics , computational chemistry , chemistry , mathematics , mathematical analysis , oceanography , organic chemistry , pure mathematics , geology
The parallel implementation of a recently developed hybrid scheme for molecular dynamics (MD) simulations (Milano and Kawakatsu, J Chem Phys 2009, 130, 214106) where self‐consistent field theory (SCF) and particle models are combined is described. Because of the peculiar formulation of the hybrid method, considering single particles interacting with density fields, the most computationally expensive part of the hybrid particle‐field MD simulation can be efficiently parallelized using a straightforward particle decomposition algorithm. Benchmarks of simulations, including comparisons of serial MD and MD‐SCF program profiles, serial MD‐SCF and parallel MD‐SCF program profiles, and parallel benchmarks compared with efficient MD program GROMACS 4.5.4 are tested and reported. The results of benchmarks indicate that the proposed parallelization scheme is very efficient and opens the way to molecular simulations of large scale systems with reasonable computational costs. © 2012 Wiley Periodicals, Inc.