19th Workshop on high performance computing in meteorology

Advancing the simulation and understanding of the Earth’s weather and climate by representing deep convection explicitly is demonstrated with an average grid spacing of 1.4km. Our global simulations are spanning a 4 months period (November 2018 - February 2019, NDJF season) with the state-of-the-art Integrated Forecasting System (IFS) of ECMWF. So far this has only been possible in...

The need to fully exploit the advantages of accelerators in modern HPC systems plays a vital role in achieving the next step change in predictive skills for weather and climate models. However, the diversification of HPC hardware continues and the use of heterogeneous computing architectures is becoming more widespread in the scientific modelling community. This incurs a recurring need to...

The latest revolution in HPC is the effort around the co-design approach, a collaborative effort to reach Exascale performance by taking a holistic system-level approach to fundamental performance improvements, is In-Network Computing. The CPU-centric approach has reached the limits of its scalability in several aspects, and In-Network Computing acting as “distributed co-processor” can handle...

The last years again have seen some changes in the operational forecasting chain at DWD. The most significant one being the replacement of the COSMO-Model by the limited area mode application of ICON, the ICON-D2. Other developments, also in data assimilation, are ongoing, for which a significant increase of computing power is needed. This is delivered now in two phases by NEC, which won the...

This talk will explore the parameters upon which architectural decisions for exascale systems will be based. It is over a decade since the first Petascale systems were introduced using accelerators. Since that time there have been many significant changes in the technology landscape with the widespread adoption of GPUs and other forms of accelerators now meaning that almost all high end...