Results 211 to 220 of about 783,982 (246)

N-body simulations

ACM Transactions on Mathematical Software, 2006
We describe four challenging N-body test problems involving the Sun and planets and use them to compare the performance of nine nonsymplectic and two symplectic integrators. Each problem has a long interval of integration and two have non-Newtonian gravitational interactions.
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Distributed Tree Structures for N-Body Simulation

1996
Several 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, Young-il Choo, Marina C. Chen   +2 more
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N-body Simulations of the Rees-Sciama Effect

2010
Using 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, Martínez-González, Enrique, Yepes, Gustavo   +2 more
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Upscaling of Cosmological N-body Simulations

2022 IEEE 18th International Conference on e-Science (e-Science), 2022
Miguel Conceição, Alberto Krone-Martins, Antonio da Silva 0002   +2 more
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Gravitational N-Body Simulations

2003
This 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

1999
We 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, Ugo Becciani, Mario Gambera, Antonio Pagliaro   +3 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, 2002
A 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, 2022
Johannes Menzel, Christian Plessl, Tobias Kenter   +2 more
exaly  

The terrestrial planet formation paradox inferred from high-resolution N-body simulations

Icarus, 2022
Ramon Brasser
exaly