April 2021

Satellite data from ArcGIS 

ChEESE had successfully run a simulation of the Mw 7 Samos-Izmir earthquake that affected Turkey in 2020 as part of it´s work on Pilot Demonstrator 1 “Urgent Seismic Simulations”. ChEESE researchers used waveform modelling software Salvus (provided by Mondaic) which is embedded in the project´s Urgent Computing (UC) Service prototype. Accurate up to 20 Hz and with the total number of unknowns reaching over 164 quadrillions*, this is the largest Salvus simulation to date that required the use of the whole BSC-CNS MareNostrum 4 supercomputer. The project will use the result of the large and several smaller-scale simulations to further develop and optimise its UC service.

The simulations are a key output of the ChEESE project and have been supported by the Spanish Supercomputing Network (RES).

* 214 244 147 elements, 512 grid points per element, 14 fields per grid point, and 107 224 time steps, amounting to 164 664 116 147 707 904 unknowns.
 

ChEESE researchers Piero Lanucara (CINECA) and Josep de la Puente (BSC) presented the talk "The ChEESE Effort Toward Building a GPU Ecosystem for Earth Science" at the GPU Technology Conference 2021 (GTC 2021) on 13 April 2021 at 11:00-11:40 CEST.

The presentation focused on the big effort in the ChEESE project toward building a GPU ecosystem. The presentation was split into two main pillars: The ChEESE flagship applications description and their GPU capabilities.  Technical aspects related to the code developments and technology used (CUDA or OpenACC, and the motives to do that) were covered, as well as benchmarking numbers on ChEESE use cases. Furthermore, the talk described in which systems these applications will run and what new science is made possible thanks to NVIDIA GPUs (in the case of the ChEESE, the possible demonstrators that will run on PRACE and EuroHPC systems).

ChEESE partner Jorge Macias, a senior researcher from Universidad de Málaga, was chosen as the guest editor of the GeoHazards special issue titled "Modelling and Numerical Simulation of Tsunami". Researchers may submit their work until 31 December 2021.

About the special issue:

The present Special Issue on “Modeling and Numerical Simulation of Tsunamis” aims to address all aspects of mathematical modeling and numerical simulation of tsunamis regardless of the mechanism by which they are generated: seismic source, aerial or underwater landslides, volcanic activity, asteroids or meteorological forcing (meteo-tsunamis). Research articles can cover a broad spectrum of topics, from case studies, model benchmarking (lab-based or reporting field cases), description and testing of new models or parameterizations, new source models and approximations, model inter-comparison, HPC in tsunami modeling, FTRT tsunami simulations, application to TEWS, high-resolution inundation simulations, probabilistic approximations (such as PTHA or PTF), IA, etc. Interdisciplinary work related to tsunami hazard assessment and risk analysis is also welcome. This Special Issue aims to collect the state of the art and most advanced knowledge in the very active area of ​​tsunami modeling and numerical simulation.

More information: https://www.mdpi.com/journal/geohazards/special_issues/model_tsunami