19th Workshop on high performance computing in meteorology

Research applications employing global atmospheric models of weather, climate and air-quality are moving to ever higher resolutions. One of the most important motivations for doing this is to remove the need to parameterize clouds, which requires horizontal meshes with cell spacing of a few kilometers and a vertical spacing of a few hundred meters. While we can perform exploratory regional or...

Spherical Multiple-Cell (SMC) grid is an unstructured grid, supporting flexible domain shapes and multi-resolutions. It retains the quadrilateral cells as in the latitude-longitude grid so that simple finite difference schemes can be used. Sub-timesteps are applied on refined cells and grid cells are merged at high latitudes to relax the CFL restriction. A fixed reference direction is used...

The EuroHPC organization is procuring many supercomputers for various consortiums across Europe. One of them is the LUMI supercomputer and the main performance is provided by AMD GPUs. A user with no knowledge of programming on GPUs or not familiar with AMD GPUs, has to make some decisions among which programming model to use depending on many factors.
In this presentation we describe a...

We present an update on Intel® hardware and software roadmaps with an emphasis on technologies most impacting Earth Systems Modelling. In the hardware update, we describe innovations in upcoming 4th Generation Intel® Xeon® Scalable Processors, codenamed “Sapphire Rapids”, and the benefits of accompanying converged technologies such as Intel® Optane™ persistent memory and DAOS exascale-class...