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Center of Excellence (CoE), EuroHPC, Exascale transition, Code scalability, Geophysics, Natural hazards, HPC service enabling, Urgent computing, Early warning forecast
Abstract:
The EU Center of Excellence for Exascale in Solid Earth (ChEESE) develops exascale transition
capabilities in the domain of Solid Earth, an area of geophysics rich in computational challenges
embracing different approaches to exascale (capability, capacity, and urgent computing). The first
implementation phase of the project (ChEESE-1P; 2018–2022) addressed scientific and technical
computational challenges in seismology, tsunami science, volcanology, and magnetohydrodynamics,
in order to understand the phenomena, anticipate the impact of natural disasters, and contribute
to risk management. The project initiated the optimisation of 10 community flagship codes for the
upcoming exascale systems and implemented 12 Pilot Demonstrators that combine the flagship codes
with dedicated workflows in order to address the underlying capability and capacity computational
challenges. Pilot Demonstrators reaching more mature Technology Readiness Levels (TRLs) were further
enabled in operational service environments on critical aspects of geohazards such as long-term and
short-term probabilistic hazard assessment, urgent computing, and early warning and probabilistic
forecasting. Partnership and service co-design with members of the project Industry and User Board
(IUB) leveraged the uptake of results across multiple research institutions, academia, industry, and
public governance bodies (e.g. civil protection agencies). This article summarises the implementation
strategy and the results from ChEESE-1P, outlining also the underpinning concepts and the roadmap
for the on-going second project implementation phase (ChEESE-2P; 2023–2026).
