Abstract
We present performance results obtained by running a direct gravitational N-body code for astrophysical simulations across the Dutch DAS-2 and the pan-European CrossGrid computational grids. We find that the performance on large grids improves as the size of the N-body system increases because the computation to communication ratio becomes higher and a better load balance can be achieved. Communication among nodes residing in different locations across Europe becomes more evident as the number of locations increases. Nevertheless, contrary to our expectations, we find that the performance decreases only by about a factor three for a large simulation. We conclude that highly distributed computational Grid infrastructures can be used efficiently for simulating large gravitational N-body systems.
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© 2005 Springer-Verlag Berlin Heidelberg
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Tirado-Ramos, A., Gualandris, A., Zwart, S.P. (2005). Performance of a Parallel Astrophysical N-Body Solver on Pan-European Computational Grids. In: Sloot, P.M.A., Hoekstra, A.G., Priol, T., Reinefeld, A., Bubak, M. (eds) Advances in Grid Computing - EGC 2005. EGC 2005. Lecture Notes in Computer Science, vol 3470. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11508380_25
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DOI: https://doi.org/10.1007/11508380_25
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-26918-2
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