Abstract
In this paper we compare the performance of classical Runge–Kutta methods implemented in Fortran and Julia languages. We use the technique described in technical report by Tomas Kalibera and Richard E. Jones from University of Kent. This technique allows to solve the following problems. 1. The determination of the number of runs required by the program to pass the warm-up stage (e.g. JIT-compilation, memory buffers filling). 2. The determination of the optimal number of levels of the experiment and the number of repetitions at each level for robust testing. 3. The construction of the confidence interval for the resulting average run time. For the numerical experiment we implement 6-th order classical Runge–Kutta methods in both languages in the most similar way. We also study unvectorized versions of our functions. For Julia we tested not only built-in vectorization capabilities, but also external library. For processing the results of measurements Python 3 with Matplotlib, NumPy and SciPy (stats module) were used. We carried out experiments for variety of ODE dimensions (from 2 to 64) and different types of processors. Our work may be interesting not only for the results of comparison of the new Julia language with Fortran, but also for the robust testing method demonstration.
The publication has been prepared with the support of the “RUDN University Program 5-100” and funded by Russian Foundation for Basic Research (RFBR) according to the research project No 16-07-00556.
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Gevorkyan, M.N., Korolkova, A.V., Kulyabov, D.S., Lovetskiy, K.P. (2019). Statistically Significant Comparative Performance Testing of Julia and Fortran Languages in Case of Runge–Kutta Methods. In: Nikolov, G., Kolkovska, N., Georgiev, K. (eds) Numerical Methods and Applications. NMA 2018. Lecture Notes in Computer Science(), vol 11189. Springer, Cham. https://doi.org/10.1007/978-3-030-10692-8_45
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