Articles | Volume 15, issue 2
Geosci. Model Dev., 15, 379–394, 2022
Geosci. Model Dev., 15, 379–394, 2022
Development and technical paper
18 Jan 2022
Development and technical paper | 18 Jan 2022

Evaluation and optimisation of the I/O scalability for the next generation of Earth system models: IFS CY43R3 and XIOS 2.0 integration as a case study

Xavier Yepes-Arbós et al.

Related authors

The EC-Earth3 Earth system model for the Coupled Model Intercomparison Project 6
Ralf Döscher, Mario Acosta, Andrea Alessandri, Peter Anthoni, Thomas Arsouze, Tommi Bergman, Raffaele Bernardello, Souhail Boussetta, Louis-Philippe Caron, Glenn Carver, Miguel Castrillo, Franco Catalano, Ivana Cvijanovic, Paolo Davini, Evelien Dekker, Francisco J. Doblas-Reyes, David Docquier, Pablo Echevarria, Uwe Fladrich, Ramon Fuentes-Franco, Matthias Gröger, Jost v. Hardenberg, Jenny Hieronymus, M. Pasha Karami, Jukka-Pekka Keskinen, Torben Koenigk, Risto Makkonen, François Massonnet, Martin Ménégoz, Paul A. Miller, Eduardo Moreno-Chamarro, Lars Nieradzik, Twan van Noije, Paul Nolan, Declan O'Donnell, Pirkka Ollinaho, Gijs van den Oord, Pablo Ortega, Oriol Tintó Prims, Arthur Ramos, Thomas Reerink, Clement Rousset, Yohan Ruprich-Robert, Philippe Le Sager, Torben Schmith, Roland Schrödner, Federico Serva, Valentina Sicardi, Marianne Sloth Madsen, Benjamin Smith, Tian Tian, Etienne Tourigny, Petteri Uotila, Martin Vancoppenolle, Shiyu Wang, David Wårlind, Ulrika Willén, Klaus Wyser, Shuting Yang, Xavier Yepes-Arbós, and Qiong Zhang
Geosci. Model Dev., 15, 2973–3020,,, 2022
Short summary
Replicability of the EC-Earth3 Earth system model under a change in computing environment
François Massonnet, Martin Ménégoz, Mario Acosta, Xavier Yepes-Arbós, Eleftheria Exarchou, and Francisco J. Doblas-Reyes
Geosci. Model Dev., 13, 1165–1178,,, 2020
Short summary

Related subject area

Climate and Earth system modeling
Description and evaluation of the tropospheric aerosol scheme in the Integrated Forecasting System (IFS-AER, cycle 47R1) of ECMWF
Samuel Rémy, Zak Kipling, Vincent Huijnen, Johannes Flemming, Pierre Nabat, Martine Michou, Melanie Ades, Richard Engelen, and Vincent-Henri Peuch
Geosci. Model Dev., 15, 4881–4912,,, 2022
Short summary
Tree migration in the dynamic, global vegetation model LPJ-GM 1.1: efficient uncertainty assessment and improved dispersal kernels of European trees
Deborah Zani, Veiko Lehsten, and Heike Lischke
Geosci. Model Dev., 15, 4913–4940,,, 2022
Short summary
An online ensemble coupled data assimilation capability for the Community Earth System Model: system design and evaluation
Jingzhe Sun, Yingjing Jiang, Shaoqing Zhang, Weimin Zhang, Lv Lu, Guangliang Liu, Yuhu Chen, Xiang Xing, Xiaopei Lin, and Lixin Wu
Geosci. Model Dev., 15, 4805–4830,,, 2022
Short summary
loopUI-0.1: indicators to support needs and practices in 3D geological modelling uncertainty quantification
Guillaume Pirot, Ranee Joshi, Jérémie Giraud, Mark Douglas Lindsay, and Mark Walter Jessell
Geosci. Model Dev., 15, 4689–4708,,, 2022
Short summary
Transient climate simulations of the Holocene (version 1) – experimental design and boundary conditions
Zhiping Tian, Dabang Jiang, Ran Zhang, and Baohuang Su
Geosci. Model Dev., 15, 4469–4487,,, 2022
Short summary

Cited articles

Barros, S., Dent, D., Isaksen, L., Robinson, G., Mozdzynski, G., and Wollenweber, F.: The IFS model: A parallel production weather code, Parallel Comput., 21, 1621–1638,, 1995. a, b
Chassignet, E. P. and Marshall, D. P.: Gulf Stream Separation in Numerical Ocean Models, Geophys. Monogr. Ser., 177, 39–61,, 2008. a
Demory, M.-E., Vidale, P. L., Roberts, M. J., Berrisford, P., Strachan, J., Schiemann, R., and Mizielinski, M. S.: The role of horizontal resolution in simulating drivers of the global hydrological cycle, Clim. Dynam., 42, 2201–2225,, 2013. a
Dorier, M., Antoniu, G., Cappello, F., Snir, M., and Orf, L.: Damaris: How to Efficiently Leverage Multicore Parallelism to Achieve Scalable, Jitter-free I/O, in: 2012 IEEE International Conference on Cluster Computing, 24–28 September 2012, Beijing, China, IEEE, 155–163,, 2012. a
ECMWF: IFS Documentation CY43R3 – Part VI: Technical and computational procedures, in: IFS Documentation CY43R3, chap. 6, ECMWF, 1–227,, 2017a. a, b
Short summary
Climate prediction models produce a large volume of simulated data that sometimes might not be efficiently managed. In this paper we present an approach to address this issue by reducing the computing time and storage space. As a case study, we analyse the output writing process of the ECMWF atmospheric model called IFS, and we integrate into it a data writing tool called XIOS. The results suggest that the integration between the two components achieves an adequate computational performance.