The quality of predictions of weather and climate depends on both resolution and complexity of the models that are used. However, resolution and complexity are limited by the computational performance that is available on today's supercomputers. While weather and climate models run on some of the fastest supercomputers of the world, models typically fail to run close to peak performance such that there is still room for a significant speed-up if efficiency is improved. The increase in parallelisation in high performance computing and the availability of various computing platforms is imposing significant challenges for the community to find the optimal hardware/model configuration and to achieve the best performance. On the other hand, the evaluation of high resolution simulations is often tedious due to large data volumes, limited statistic that is affordable and changed model behaviour that needs to be studied (e.g. if convection or eddies are resolved explicitly or if non-hydrostatic equations need to be used).
These challenges can only be addressed appropriately in a close collaboration between Computing and Earth System Scientists. This session aims to bring together scientists who run and evaluate atmosphere and ocean models with high resolution and complexity as well as scientists who enable these models to run as efficiently as possible on existing and future high performance computing architectures (regarding both model development and model optimisation). The session will also be an opportunity for scientists from the EU projects PRIMAVERA, ESCAPE and ESiWACE as well as HighResMIP from CMIP6 to meet and interact.

V. Balaji from Princeton University will be our keynote speaker invited by the ESiWACE EU Horizon2020 COE (grant number 675191).

Co-organized as CL5.05/ESSI1.2/NP1.4/OS4.20
Convener: Peter Düben | Co-conveners: Reindert Haarsma, Xavier Lapillonne, Malcolm Roberts, Pier-Luigi Vidale
| Thu, 11 Apr, 08:30–10:15
Room F1
| Attendance Thu, 11 Apr, 14:00–15:45
Hall X5

Thursday, 11 April 2019 | Room F1

Chairperson: Peter Dueben
08:30–08:45 |
| solicited
| Highlight
Venkatramani Balaji
08:45–09:00 |
Philipp Neumann, Julia Duras, Joachim Biercamp, and Panagiotis Adamidis
09:00–09:15 |
Stefano Ubbiali, Christoph Schär, Linda Schlemmer, William Sawyer, and Thomas C. Schulthess
09:15–09:30 |
Valentin Clément, Remo Dietlicher, Oliver Fuhrer, Philippe Marti, Carlos Osuna, Will Sawyer, and Tobias Wicky
09:30–09:45 |
Gabriel Vecchi, Hiroyuki Murakami, Tom Delworth, Seth Underwood, Andrew Wittenberg, Fanrong Zeng, Wei Zhang, Jane Baldwin, William Cooke, Jie He, Sarah Kapnick, Tom Knutson, Gabriele Villarini, Karin van der Wiel, Whit Anderson, Venkatramani Balaji, Jan-Huey Chen, Keith Dixon, Rich Gugel, and Lucas Harris and the Team Working on HiFLOR and FLOR
09:45–10:00 |
Natalja Rakowsky, Nikolay Koldunov, Vadym Aizinger, Patrick Scholz, Dmitry Sidorenko, Sergey Danilov, and Thomas Jung
10:00–10:15 |
| presentation
Thomas Dubos, Yann Meurdesoif, Abdoul-Khadre Traoré, Josefine Ghattas, Laurent Fairhead, Ehouarn Millour, Frédéric Hourdin, Francois Lott, David Cugnet, Jan Polcher, Arnaud Caubel, Sébastien Fromang, Stella Bourdin, Marie Sicard, Masa Kageyama, Pascale Braconnot, Olivier Marti, and Marie-Alice Foujols