Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 5.240
IF5.240
IF 5-year value: 5.768
IF 5-year
5.768
CiteScore value: 8.9
CiteScore
8.9
SNIP value: 1.713
SNIP1.713
IPP value: 5.53
IPP5.53
SJR value: 3.18
SJR3.18
Scimago H <br class='widget-line-break'>index value: 71
Scimago H
index
71
h5-index value: 51
h5-index51
GMD | Articles | Volume 13, issue 6
Geosci. Model Dev., 13, 2783–2804, 2020
https://doi.org/10.5194/gmd-13-2783-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Geosci. Model Dev., 13, 2783–2804, 2020
https://doi.org/10.5194/gmd-13-2783-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Development and technical paper 24 Jun 2020

Development and technical paper | 24 Jun 2020

Single-precision arithmetic in ECHAM radiation reduces runtime and energy consumption

Alessandro Cotronei and Thomas Slawig

Related authors

Reviews and syntheses: parameter identification in marine planktonic ecosystem modelling
Markus Schartau, Philip Wallhead, John Hemmings, Ulrike Löptien, Iris Kriest, Shubham Krishna, Ben A. Ward, Thomas Slawig, and Andreas Oschlies
Biogeosciences, 14, 1647–1701, https://doi.org/10.5194/bg-14-1647-2017,https://doi.org/10.5194/bg-14-1647-2017, 2017
Short summary
Metos3D: the Marine Ecosystem Toolkit for Optimization and Simulation in 3-D – Part 1: Simulation Package v0.3.2
Jaroslaw Piwonski and Thomas Slawig
Geosci. Model Dev., 9, 3729–3750, https://doi.org/10.5194/gmd-9-3729-2016,https://doi.org/10.5194/gmd-9-3729-2016, 2016
Short summary
Optimization of model parameters and experimental designs with the Optimal Experimental Design Toolbox (v1.0) exemplified by sedimentation in salt marshes
J. Reimer, M. Schuerch, and T. Slawig
Geosci. Model Dev., 8, 791–804, https://doi.org/10.5194/gmd-8-791-2015,https://doi.org/10.5194/gmd-8-791-2015, 2015
Short summary
Reducing the model-data misfit in a marine ecosystem model using periodic parameters and linear quadratic optimal control
M. El Jarbi, J. Rückelt, T. Slawig, and A. Oschlies
Biogeosciences, 10, 1169–1182, https://doi.org/10.5194/bg-10-1169-2013,https://doi.org/10.5194/bg-10-1169-2013, 2013
Porting marine ecosystem model spin-up using transport matrices to GPUs
E. Siewertsen, J. Piwonski, and T. Slawig
Geosci. Model Dev., 6, 17–28, https://doi.org/10.5194/gmd-6-17-2013,https://doi.org/10.5194/gmd-6-17-2013, 2013

Related subject area

Atmospheric Sciences
Prioritising the sources of pollution in European cities: do air quality modelling applications provide consistent responses?
Bart Degraeuwe, Enrico Pisoni, and Philippe Thunis
Geosci. Model Dev., 13, 5725–5736, https://doi.org/10.5194/gmd-13-5725-2020,https://doi.org/10.5194/gmd-13-5725-2020, 2020
Short summary
New strategies for vertical transport in chemistry transport models: application to the case of the Mount Etna eruption on 18 March 2012 with CHIMERE v2017r4
Mathieu Lachatre, Sylvain Mailler, Laurent Menut, Solène Turquety, Pasquale Sellitto, Henda Guermazi, Giuseppe Salerno, Tommaso Caltabiano, and Elisa Carboni
Geosci. Model Dev., 13, 5707–5723, https://doi.org/10.5194/gmd-13-5707-2020,https://doi.org/10.5194/gmd-13-5707-2020, 2020
Short summary
Sensitivity of spatial aerosol particle distributions to the boundary conditions in the PALM model system 6.0
Mona Kurppa, Pontus Roldin, Jani Strömberg, Anna Balling, Sasu Karttunen, Heino Kuuluvainen, Jarkko V. Niemi, Liisa Pirjola, Topi Rönkkö, Hilkka Timonen, Antti Hellsten, and Leena Järvi
Geosci. Model Dev., 13, 5663–5685, https://doi.org/10.5194/gmd-13-5663-2020,https://doi.org/10.5194/gmd-13-5663-2020, 2020
Short summary
Multi-layer coupling between SURFEX-TEB-v9.0 and Meso-NH-v5.3 for modelling the urban climate of high-rise cities
Robert Schoetter, Yu Ting Kwok, Cécile de Munck, Kevin Ka Lun Lau, Wai Kin Wong, and Valéry Masson
Geosci. Model Dev., 13, 5609–5643, https://doi.org/10.5194/gmd-13-5609-2020,https://doi.org/10.5194/gmd-13-5609-2020, 2020
Short summary
Description and evaluation of a detailed gas-phase chemistry scheme in the TM5-MP global chemistry transport model (r112)
Stelios Myriokefalitakis, Nikos Daskalakis, Angelos Gkouvousis, Andreas Hilboll, Twan van Noije, Jason E. Williams, Philippe Le Sager, Vincent Huijnen, Sander Houweling, Tommi Bergman, Johann Rasmus Nüß, Mihalis Vrekoussis, Maria Kanakidou, and Maarten C. Krol
Geosci. Model Dev., 13, 5507–5548, https://doi.org/10.5194/gmd-13-5507-2020,https://doi.org/10.5194/gmd-13-5507-2020, 2020
Short summary

Cited articles

Adler, R., Huffman, G., Chang, A., Ferraro, R., Xie, P., Janowiak, J., Rudolf, B., Schneider, U., Curtis, S., Bolvin, D., Gruber, A., Susskind, J., and Arkin, P.: The Version 2 Global Precipitation Climatology Project (GPCP) Monthly Precipitation Analysis (1979–Present), J. Hydrometeor., 4, 1147–1167, 2003. a
Dawson, A. and Düben, P. D.: rpe v5: an emulator for reduced floating-point precision in large numerical simulations, Geosci. Model Dev., 10, 2221–2230, https://doi.org/10.5194/gmd-10-2221-2017, 2017. a
DKRZ: Yet Another exChange Tool, available at: https://www.dkrz.de/redmine/projects/yaxt/wiki/Documentation (last access: 22 April 2020), 2013. a
Fagan, M., Schlachter, J., Yoshii, K., Leyffer, S., Palem, K., Snir, M., Wild, S., and Enz, C.: Overcoming the Power Wall by Exploiting Inexactness and Emerging COTS Architectural Features, Preprint ANL/MCS-P6040-0816, available at: http://www.mcs.anl.gov/publications (last access: 22 April 2020), 2016. a
IEEE Standards Association: IEEE Standard for Floating-Point Arithmetic, Tech. rep., avaialble at: https://ieeexplore.ieee.org/servlet/opac?punumber=8766227 (last access: 22 April 2020), 2019. a
Publications Copernicus
Download
Short summary
We converted the radiation part of the atmospheric model ECHAM to single-precision arithmetic, using a step-by-step change in all modules. A small code portion still requires higher precision. The generated code can be easily changed from double to single precision and vice versa. The quality of the output of the single-precision version is comparable to observational data and the one of the original code. The runtime was reduced by 40 %, and the energy consumption could also be decreased.
We converted the radiation part of the atmospheric model ECHAM to single-precision arithmetic,...
Citation