20th ECMWF workshop on high performance computing in meteorology

A simulated digital planet will be critical to evaluate different scenarios of what a changing present is and what the future might look like, taking into account the climate and weather changes. The European Commission’s Destination Earth (DestinE) program aims towards this by developing high-precision digital twins (DT) of the Earth. DestinE is expected to provide the first two digital twins: the Digital Twin on Weather-Induced and Geophysical Extremes and the Digital Twin on Climate Change Adaptation.
Leveraging the available performance of pre-exascale systems, the Barcelona Supercomputing Center and the Royal Meteorological Institute of Belgium are involved in this effort as partners with leading technical expertise in analyzing and optimizing European weather and climate code performance in diverse and heterogeneous platforms.
In this presentation, we will focus on the joint efforts made in the technical work packages of both DTs to increase the performance of the most computationally demanding parts of the models, the challenge represented by the need for performance portability on accelerators, and the lesson(s) learned so far on this exciting battleground.