PRODUCTIVITY OF A LOW-BUDGET COMPUTER CLUSTER APPLIED TO OVERCOME THE N-BODY PROBLEM

Tomasz NOWICKI

t.nowicki@pollub.pl
Lublin University of Technology, Faculty of Electrical Engineering and Computer Science, Department of Computer Science (Poland)

Adam GREGOSIEWICZ


Lublin University of Technology, Faculty of Electrical Engineering and Computer Science, Department of Mathematics (Poland)

Zbigniew ŁAGODOWSKI


Lublin University of Technology, Faculty of Electrical Engineering and Computer Science, Department of Mathematics (Poland)

Abstract

The classical n-body problem in physics addresses the prediction of individual motions of a group of celestial bodies under gravitational forces and has been studied since Isaac Newton formulated his laws. Nowadays the n-body problem has been recognized in many more fields of science and engineering. Each problem of mutual interaction between objects forming a dynamic group is called as the n-body problem. The cost of the direct algorithm for the problem is O(n2) and is not acceptable from the practical point of view. For this reason cheaper algorithms have been developed successfully reducing the cost to O(nln(n)) or even O(n). Because further improvement of the algorithms is unlikely to happen it is the hardware solutions which can still accelerate the calculations. The obvious answer here is a computer cluster that can preform the calculations in parallel. This paper focuses on the performance of a low-budget computer cluster created on ad hoc basis applied to n-body problem calculation. In order to maintain engineering valuable results a real technical issue was selected to study. It was Discrete Vortex Method that is used for simulating air flows. The presented research included writing original computer code, building a computer cluster, preforming simulations and comparing the results.


Keywords:

computer clusters, parallel computing, n-body problem

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Published
2021-12-30

Cited by

NOWICKI, T., GREGOSIEWICZ, A., & ŁAGODOWSKI, Z. (2021). PRODUCTIVITY OF A LOW-BUDGET COMPUTER CLUSTER APPLIED TO OVERCOME THE N-BODY PROBLEM. Applied Computer Science, 17(4), 100–109. https://doi.org/10.23743/acs-2021-32

Authors

Tomasz NOWICKI 
t.nowicki@pollub.pl
Lublin University of Technology, Faculty of Electrical Engineering and Computer Science, Department of Computer Science Poland

Authors

Adam GREGOSIEWICZ 

Lublin University of Technology, Faculty of Electrical Engineering and Computer Science, Department of Mathematics Poland

Authors

Zbigniew ŁAGODOWSKI 

Lublin University of Technology, Faculty of Electrical Engineering and Computer Science, Department of Mathematics Poland

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