Redesign of astrophysical codes for exascale computing: the SPACE experience

• Main Authors: Taffoni, Giuliano, Mignone, Andrea, Tornatore, Luca, Sciacca, Eva, Guarrasi, Massimiliano, Lapenta, Giovanni, Riha, Lubomir, Vavrik, Radim, Vysocky, Ondrej, Kadlubiak, Kristian, Strakos, Petr, Jaros, Milan, Dolag, Klaus, Commercon, Benoit, Rezzolla, Luciano, Pierre, Khalil, Doulis, Georgios, Shen, Sijing, Marazakis, Manolis, Gregori, Daniele, Boella, Elisabetta, Perna, Gino, Zanotti, Marisa, Raffin, Erwan, Polsterer, Kai, Trujillo Gomez, Sebastian, Marin, Guillermo
• Format: Conference Proceeding
• Language: eng ; nor
• ISSN: 0277-786X
• DOI: 10.1117/12.3020361

High Performance Computing based simulations are crucial in Astrophysics and Cosmology, helping scientists investigate and understand complex astrophysical phenomena. Taking advantage of Exascale computing capabilities is essential for these efforts. However, the unprecedented architectural complexity of exascale systems impacts simulation codes. The SPACE Center of Excellence aims to re-engineer key astrophysical codes to adapt to these new computational challenges by adopting innovative programming paradigms and software solutions. Through co-design activities, SPACE brings together scientists, code developers, HPC experts, hardware manufacturers, and software developers. This collaboration enhances exascale astrophysics and cosmology applications, promoting the use of exascale and post-exascale computing capabilities. Additionally, SPACE addresses high-performance data analysis for the massive data outputs from exascale simulations, using machine learning and visualization tools. The project facilitates application deployment across platforms by focusing on code repositories and data sharing, integrating European astrophysical communities around exascale computing with standardized software and data protocols. In this paper, we present the SPACE Center of Excellence and the preliminary results achieved by the project.