Benefits from using mixed precision computations in the ELPA-AEO and ESSEX-II eigensolver projects

Journal article


Publication Details

Author(s): Alvermann A, Basermann A, Bungartz HJ, Carbogno C, Ernst D, Fehske H, Futamura Y, Galgon M, Hager G, Huber S, Huckle T, Ida A, Imakura A, Kawai M, Köcher S, Kreutzer M, Kus P, Lang B, Lederer H, Manin V, Marek A, Nakajima K, Nemec L, Reuter K, Rippl M, Röhrig-Zöllner M, Sakurai T, Scheffler M, Scheurer C, Shahzad F, Simoes Brambila D, Thies J, Wellein G
Journal: Japan Journal of Industrial and Applied Mathematics
Publication year: 2019
ISSN: 0916-7005


Abstract

We first briefly report on the status and recent achievements of the ELPA-AEO (Eigen value Solvers for Petaflop Applications—Algorithmic Extensions and Optimizations) and ESSEX II (Equipping Sparse Solvers for Exascale) projects. In both collaboratory efforts, scientists from the application areas, mathematicians, and computer scientists work together to develop and make available efficient highly parallel methods for the solution of eigenvalue problems. Then we focus on a topic addressed in both projects, the use of mixed precision computations to enhance efficiency. We give a more detailed description of our approaches for benefiting from either lower or higher precision in three selected contexts and of the results thus obtained.


FAU Authors / FAU Editors

Ernst, Dominik
Professur für Höchstleistungsrechnen
Kreutzer, Moritz
Professur für Höchstleistungsrechnen
Shahzad, Faisal
Professur für Höchstleistungsrechnen
Wellein, Gerhard Prof. Dr.
Professur für Höchstleistungsrechnen


External institutions
Bergische Universität Wuppertal
Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
Fritz-Haber-Institut der Max-Planck-Gesellschaft (FHI)
Rechenzentrum Garching der Max-Planck-Gesellschaft (MPCDF) / Max Planck Computing & Data Facility
Technische Universität München (TUM)
Universität Greifswald
University of Tokyo
University of Tsukuba / 筑波大学


How to cite

APA:
Alvermann, A., Basermann, A., Bungartz, H.J., Carbogno, C., Ernst, D., Fehske, H.,... Wellein, G. (2019). Benefits from using mixed precision computations in the ELPA-AEO and ESSEX-II eigensolver projects. Japan Journal of Industrial and Applied Mathematics. https://dx.doi.org/10.1007/s13160-019-00360-8

MLA:
Alvermann, Andreas, et al. "Benefits from using mixed precision computations in the ELPA-AEO and ESSEX-II eigensolver projects." Japan Journal of Industrial and Applied Mathematics (2019).

BibTeX: 

Last updated on 2019-14-05 at 09:38