Masson, Sebastian., C. Hourdin and R. Benshila, LOCEAN-IPSL,
E. Maisonnave, CERFACS, Y. Meurdesoif, LSCE-IPSL, C. Mazauric, Bull, G. Samson,
Mercator-ocean, F. Colas, and G. Madec, LOCEAN-IPSL, R. Bourdalle-Badie,
Mercator-ocean, S. Valcke, and L. Coquart, CERFACS
Our work aims at
building a modeling platform for multi-scale ocean-atmosphere coupled
simulations. This platform is based on the ocean model NEMO interfaced to WRF
through the OASIS coupler. The domain configuration is a tropical channel with
a latitudinal extent of 45¡S-45¡N. This configuration has been chosen to build
a hierarchy of coupled simulations with oceanic and atmospheric resolutions of
81, 27 and 9 km. The arrival, early 2012, of ÒCurieÓ, a Bullx peta-scale
machine, offers us the unique opportunity to set-up and run simulations at the
highest target resolution (9km in both media). This presentation will first
present the technical challenges we had to resolve in order to perform these
simulations on more than 10 000 cores. We will detail the choices we made in
terms of parallelisation, IO strategy and coupling interface to achieve the
best scalability. These results illustrate the performances and flexibility
offered by OASIS to couple different executable with their own specific constraints.
We will next present the first results of these simulations and their potential
to explore a multitude of scientific questions.