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Grid environment for turbulent dynamics in cosmology

doi: 10.6062/jcis.2011.02.01.0035(Free PDF)


Renata S.R. Ruiz, Haroldo F. Campos Velho, César A. Caretta, Andrea S. Charão and Roberto P. Souto


A recent proposal, addressing the organization and evolution of large-scale structures in the Universe, suggests a similarity between cosmological evolution and the dynamics of a turbulent fluid. In this work, we present some optimization procedures for extending the analyses of turbulent signatures in the gravitational potential energy spectrum of dark matter haloes of galaxies at different redshifts. These include the development of a parallel version of the Friends-of-Friends algorithm, for identifying the dark matter haloes, and the implementation of a grid environment. Our data are from the N-body simulations run by the Virgo Consortium. The spectra for different redshifts are computed as independent tasks, therefore, we can use parallelization and a grid environment. We employed the OurGrid middleware in such grid experiment. Here we present the first results demonstrating the feasibility of implementing a computational grid for Astrophysics in Brazil. The obtained results fully corroborate the previously found turbulent-like signatures.


computational data analysis and simulation in general sciences, grid computing, parallel friends-of-friends, turbulence and cosmology.


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