Abstract
The study of the astrophysical N-body problem requires the use of numerical integration to solve a system of 6N first-order differential equations. The particle-particle codes (PP) using direct summation methods are a good example of algorithms where parallelisation can speed up the computation in an efficient way. For this purpose, a serial version of the PP code NNEWTON developed by the author was parallelised using the MPI library and tested on the CRAY-T3D at the EPCC. The results of the parallel code here presented show very good efficiency and scaling, up to 128 processors and for systems up to 16384 particles.
This work was supported by EPCC/TRACS under Grant ERB-FMGE-CT95-0051 and partly supported by PRAXIS XXI under GRANT BM/594/94.
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Pereira, N.S.A. (1999). A Parallel N-Body Integrator Using MPI. In: Hernández, V., Palma, J.M.L.M., Dongarra, J.J. (eds) Vector and Parallel Processing – VECPAR’98. VECPAR 1998. Lecture Notes in Computer Science, vol 1573. Springer, Berlin, Heidelberg. https://doi.org/10.1007/10703040_47
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DOI: https://doi.org/10.1007/10703040_47
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