Abstract
The paper presents several aspects of the computational performance of the EULAG F90/95 code, originally written in Fortran 77. EULAG is a well-established research fluid solver characterized by robust numerics. It is suitable for a wide range of scales of the geophysical flows and is considered as a prospective dynamical core of a future weather forecast model of the COSMO consortium. The code parallelization is based on Message Passing Interface (MPI) communication protocol. In the paper, the numerical model’s parallel performance is examined using an idealized test case that involves a warm precipitating thermal developing over an undulated terrain. Also the efficiency of the basic code structures/subroutines is tested separately. It includes advection, elliptic pressure solver, preconditioner, Laplace equation solver and moist thermodynamics. In addition, the effects of horizontal domain decomposition and of the choice of machine precision on the computational efficiency are analyzed.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Prusa, J.M., Smolarkiewicz, P.K., Wyszogrodzki, A.A.: EULAG, a computational model for multiscale flows. Comp. Fluids 37(9), 1193–1207 (2008)
The Consortium for Small-scale Modeling (September 2011), http://www.cosmo-model.org
Piotrowski, Z.P., Kurowski, M.J., Rosa, B., Ziemianski, M.Z.: EULAG Model for Multiscale Flows – Towards the Petascale Generation of Mesoscale Numerical Weather Prediction. In: Wyrzykowski, R., Dongarra, J., Karczewski, K., Wasniewski, J. (eds.) PPAM 2009. LNCS, vol. 6068, pp. 380–387. Springer, Heidelberg (2010)
Held, I.M., Suarez, M.J.: A proposal for the intercomparison of the dynamical cores of atmospheric general circulation models. Bull. Amer. Meteor. Soc. 75(10), 1825–1830 (1994)
Gal-Chen, T., Somerville, R.C.J.: On the use of a coordinate transformation for the solution of the navier-stokes equations. Journal of Computational Physics 17(2), 209–228 (1975)
Grabowski, W.W., Smolarkiewicz, P.K.: A multiscale anelastic model for meteorological research. Mon. Weather Rev. 130, 939–956 (2002)
Piotrowski, Z.P., Wyszogrodzki, A.A., Smolarkiewicz, P.K.: Towards petascale simulation of atmospheric circulations with soundproof equations. Acta Geophys. 59(6), 1294–1311 (2011)
Smolarkiewicz, P.K., Skamarock, W.C., Klemp, J.B.: Preconditioned Conjugate—Residual Solvers for Helmholz Equations in Nonhydrostatic Models. Mon. Weather Rev., 587–599 (1996)
Smolarkiewicz, P.K., Margolin, L.G.: MPDATA: A finite-difference solver for geophysical flows. J. Comput. Phys. 140, 459–480 (1998)
Grama, A., Gupta, A., Karypis, G., Kumar, V.: Introduction to Parallel Computing, 2nd edn. Addison-Wesley (2003)
INTEL 64 and IA–32 Architectures Optimization Reference Manual (2009)
Performance Application Programming Interface (September 2011), http://icl.cs.utk.edu/papi
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2012 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Wójcik, D.K., Kurowski, M.J., Rosa, B., Ziemiański, M.Z. (2012). A Study on Parallel Performance of the EULAG F90/95 Code. In: Wyrzykowski, R., Dongarra, J., Karczewski, K., Waśniewski, J. (eds) Parallel Processing and Applied Mathematics. PPAM 2011. Lecture Notes in Computer Science, vol 7204. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31500-8_43
Download citation
DOI: https://doi.org/10.1007/978-3-642-31500-8_43
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-31499-5
Online ISBN: 978-3-642-31500-8
eBook Packages: Computer ScienceComputer Science (R0)