Porting three astrophysics codes to Leonardo's GPUs yields 78–97% parallel efficiency on up to 1,024–2,048 GPUs, with gPLUTO scaling best and OpenGadget3's production scaling still limited by its Barnes–Hut gravity tree.
Schoeffler, et al, Can plasma physics establish a significant bound on long-range dark matter interactions?, Phys
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Towards Exascale Computing for Astrophysical Simulation Leveraging the Leonardo EuroHPC System
Porting three astrophysics codes to Leonardo's GPUs yields 78–97% parallel efficiency on up to 1,024–2,048 GPUs, with gPLUTO scaling best and OpenGadget3's production scaling still limited by its Barnes–Hut gravity tree.