Faculty of Information Technology, BUT

Publication Details

Parallelisation of the 3D Fast Fourier Transform Using the Hybrid OpenMP/MPI Decomposition

NIKL Vojtěch and JAROŠ Jiří. Parallelisation of the 3D Fast Fourier Transform Using the Hybrid OpenMP/MPI Decomposition. In: Mathematical and Engineering Methods in Computer Science. Lecture Notes in Computer Science, vol. 8934. Heidelberg: Springer International Publishing, 2014, pp. 100-112. ISBN 978-3-319-14895-3.
Czech title
Paralelizace 3D FFT pomocí 2D hybridní dekompozice
Type
conference paper
Language
english
Authors
Keywords
Fast Fourier Transform, Decompostion, Hybrid Paralellisation, OpenMP, MPI.
Abstract
The 3D fast Fourier transform (FFT) is the heart of many simulation methods. Although the efficient parallelisation of the FFT has been deeply studied over last few decades, many researchers only focused on either pure message passing (MPI) or shared memory (OpenMP) implementations. Unfortunately, pure MPI approaches cannot exploit the shared memory within the cluster node and the OpenMP cannot scale over multiple nodes.
This paper proposes a 2D hybrid decomposition of the 3D FFT where the domain is decomposed over the first axis by means of MPI while over the second axis by means of OpenMP. The performance of the pro-posed method is thoroughly compared with the state of the art libraries (FFTW, PFFT, P3DFFT) on three supercomputer systems with up to 16k cores. The experimental results show that the hybrid implementation offers 10-20% higher performance and better scaling especially for high core counts.
Published
2014
Pages
100-112
Proceedings
Mathematical and Engineering Methods in Computer Science
Series
Lecture Notes in Computer Science
Volume
8934
Conference
MEMICS'14 -- 9th Doctoral Workshop on Mathematical and Engineering Methods in Computer Science, Telč, CZ
ISBN
978-3-319-14895-3
Publisher
Springer International Publishing
Place
Heidelberg, DE
DOI
BibTeX
@INPROCEEDINGS{FITPUB10706,
   author = "Vojt\v{e}ch Nikl and Ji\v{r}\'{i} Jaro\v{s}",
   title = "Parallelisation of the 3D Fast Fourier Transform Using the Hybrid OpenMP/MPI Decomposition",
   pages = "100--112",
   booktitle = "Mathematical and Engineering Methods in Computer Science",
   series = "Lecture Notes in Computer Science",
   volume = 8934,
   year = 2014,
   location = "Heidelberg, DE",
   publisher = "Springer International Publishing",
   ISBN = "978-3-319-14895-3",
   doi = "10.1007/978-3-319-14896-0\_9",
   language = "english",
   url = "https://www.fit.vut.cz/research/publication/10706"
}
Files
Back to top