Towards FAIR Astrophysical Simulations

Susanne Pfalzner^1*Stephan Hachinger²Jolanta Zjupa³Salvatore Cielo²Frank W. Wagner³Marcus Br¨uggen⁴Annika Hagemeier³

• ¹Julich Research Center, Helmholtz Association of German Research Centres (HZ), Jülich, Germany
• ²Bayerische Akademie der Wissenschaften Leibniz Rechenzentrum, Garching, Germany
• ³Forschungszentrum Julich Julich Supercomputing Centre, Jülich, Germany
• ⁴Universitat Hamburg Hamburger Sternwarte, Hamburg, Germany

Reproducibility is a cornerstone of science. FAIR (findable, accessible, interoperable, and reusable) data is often a vital step towards testing the reproducibility of results. The implementation of FAIR principles in the astrophysical simulation community is still varied.Astrophysical simulations often do not fully follow the FAIR principles yet. We approach the discussion of this topic mainly from a high-performance computing (HPC) point of view. We identify the main obstacles to FAIR astrophysics simulations: First, the vast datasets created in simulations on HPC facilities complicate FAIR data management. Second, there is little peer pressure missing incentive to fully share codes, results, and diagnostic data. Third, a lack of workflows that include data publication and technical supportare often lacking. Therefore, particularly smaller research groups struggle due to the lackunavailability of dedicated personnel and time in their efforts towards FAIR and open simulations. We propose actionable steps towards achieving "FAIRer" data and open source publication standards in numerical astrophysics. Our suggestions include low-threshold methods to fulfil the basic FAIR requirements as well as basic tools for FAIR (meta-)data generation and data/code publication. Ultimately, this work aims to raise awareness and This work is a high-level overview intended to initiate discussions within the community, offering initial solutions to these challenges.