Parallel Brownian dynamics simulations with the message-passing and PGAS programming models
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Parallel Brownian dynamics simulations with the message-passing and PGAS programming modelsData
2013-04Cita bibliográfica
Teijeiro, C., Sutmann, G., Taboada, G. L., & Touriño, J. (2013). Parallel Brownian dynamics simulations with the message-passing and PGAS programming models. Computer Physics Communications, 184(4), 1191-1202.
Resumo
[Abstract] The simulation of particle dynamics is among the most important mechanisms to study the behavior of molecules in a medium under specific conditions of temperature and density. Several models can be used to compute efficiently the forces that act on each particle, and also the interactions between them. This work presents the design and implementation of a parallel simulation code for the Brownian motion of particles in a fluid. Two different parallelization approaches have been followed: (1) using traditional distributed memory message-passing programming with MPI, and (2) using the Partitioned Global Address Space (PGAS) programming model, oriented towards hybrid shared/distributed memory systems, with the Unified Parallel C (UPC) language. Different techniques for domain decomposition and work distribution are analyzed in terms of efficiency and programmability, in order to select the most suitable strategy. Performance results on a supercomputer using up to 2048 cores are also presented for both MPI and UPC codes.
Palabras chave
Brownian dynamics
Parallel simulation
MPI
PGAS
UPC
Parallel simulation
MPI
PGAS
UPC
Descrición
This is a post-peer-review, pre-copyedit version of an article published in Computer Physics Communications. The final authenticated version is available online at: https://doi.org/10.1016/j.cpc.2012.12.015
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Dereitos
Atribución-NoComercial-SinDerivadas 3.0 España
ISSN
0010-4655
1879-2944
1879-2944