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Exascale models of stellar explosions: Quintessential multi-physics simulation...

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The International Journal of High Performance Computing Applications
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The ExaStar project aims to deliver an efficient, versatile, and portable software ecosystem for multi-physics astrophysics simulations run on exascale machines.
The code suite is a component-based multi-physics toolkit, built on the capabilities of current simulation codes (in particular FLASH5 and Castro), and based on the massively parallel adaptive mesh refinement framework AMReX.
It includes modules for hydrodynamics, advanced radiation-transport, thermonuclear kinetics, and nuclear microphysics.
The code will reach exascale efficiency by building upon current multi- and many-core packages integrated into a task-based asynchronous execution framework.
The target science includes multi-physics simulations of astrophysical explosions (such as supernovae and neutron star mergers) to understand the cosmic origin of the elements and the fundamental physics of matter and neutrinos under extreme conditions.