Parallelization of a treecode
نویسندگان
چکیده
منابع مشابه
Parallelization of the Treecode Algorithm for N-Body Simulation Using MPI, Hybrid, and GridRPC Programming Paradigms
This dissertation describes the parallelization of the treecode algorithm for N-Body problem and performance comparison among three different parallel programming paradigms, MPI, hybrid MPI-OpenMP, and GridRPC. In N-Body simulation, the specific routine for calculating the forces on the bodies which accounts for upwards of 90% of the cycles in typical computations is eminently suitable for obta...
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Hierarchical force calculation algorithms (e.g. Greengard 1990) provide fast, general, and reasonably accurate approximations for gravity and other inverse-square forces. They fill the gap between direct sum methods, which are accurate and general but require O(N2) operations for a complete force calculation, and field methods, which have limited generality and accuracy but require only O(N) op...
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A treecode algorithm is presented for evaluating electrostatic potentials in a charged particle system undergoing screened Coulomb interactions in 3D. The method uses a farfield Taylor expansion in Cartesian coordinates to compute particle–cluster interactions. The Taylor coefficients are evaluated using new recurrence relations which permit efficient computation of high order approximations. T...
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We describe a parallel, cosmological N-body code based on a hybrid scheme using the particle-mesh (PM) and Barnes-Hut (BH) oct-tree algorithm. We call the algorithm GOTPM for Grid-of-Oct-Trees-Particle-Mesh. The code is parallelized using the Message Passing Interface (MPI) library and is optimized to run on Beowulf clusters as well as symmetric multi-processors. The gravitational potential is ...
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Portability and versatility are important characteristics of a computer program which is meant to be generally useful. We describe how we have developed a parallel N-body treecode to meet these goals. A variety of applications to which the code can be applied are mentioned. Performance of the program is also measured on several machines. A 512 processor Intel Paragon can solve for the forces on...
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ژورنال
عنوان ژورنال: New Astronomy
سال: 2003
ISSN: 1384-1076
DOI: 10.1016/s1384-1076(03)00057-5