Results 271 to 280 of about 17,923,772 (307)
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Distributed Tree Structures for N-Body Simulation
1996Several particle simulation algorithms, such as the Barnes-Hut [1] and the Fast Multipole method [2], proceed by hierarchically decomposing the simulation space and representing the distribution of the simulated particles in an adaptive tree data structure which varies as the simulation proceeds.
A. Satish Pai +2 more
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N-body Simulations of the Rees-Sciama Effect
2010Using N-body cosmological simulations, we compute the derivative of the potential along the line of sight in order to estimate the integrated Sachs–Wolfe (ISW) effect and the Rees–Sciama (R-S) effect on CMB maps. By using the same seed to generate the initial conditions and changing the spatial and mass resolution we study the impact of numerical ...
Diego, José María +2 more
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Gravitational N-Body Simulations
2003This book discusses in detail all the relevant numerical methods for the classical N-body problem. It demonstrates how to develop clear and elegant algorithms for models of gravitational systems, and explains the fundamental mathematical tools needed to describe the dynamics of a large number of mutually attractive particles.
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Parallel Tree Algorithms for N-body Simulations
1999We describe a new parallel implementation of the octal-hierarchical tree N-body algorithm on SHared Memory systems (SHM) we have recently developed. Pursuing an effort to optimize as much as possible the code on a generic SHM we have modified the original algorithm introduced by Barnes and Hut, introducing a new scheme of "grouping" of particle ...
Vincenzo Antonuccio-Delogu +3 more
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Upscaling of Cosmological N-body Simulations
2022 IEEE 18th International Conference on e-Science (e-Science), 2022Miguel Conceição +2 more
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Parallel N-body simulation [PDF]
, 2012 The objective of this work is to speed up computation of interactions between atoms of water, which uses the brute force approach. We want to speed up computations using OpenCL API, which allows more efficient use of multicore CPUs. OpenCL (Open Computing Language) is a programming interface for parallel programming, independent of the hardware ...
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Requirements of a Package for N-Body Simulations of the Solar System
Numerical Algorithms, 2002A large number of computational packages for specific types of \(N\)-body simulations are available today. Here a discussion is made on mathematical problems involving the integration methods, user specifications, data structures and output handling, the round-off errors, programming languages and required routines.
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The Strong Scaling Advantage of FPGAs in HPC for N-body Simulations
ACM Transactions on Reconfigurable Technology and Systems, 2022Christian Plessl +2 more
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Numerical Simulation of N-Body Asteroid Aggregation
2015Recently, the development of dedicated numerical codes has pushed forward the study of N-body gravitational dynamics leading to better and wider understanding of processes involving the formation of natural bodies in the Solar System. A major branch includes the study of asteroid formation: evidence from recent studies and observations support the idea
FERRARI, FABIO +3 more
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The Clustering Dynamics of Primordial Black Holes in N-Body Simulations
Universe, 2021Savvas Nesseris, Juan Garcia-Bellido
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