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Welcome to the AthenaK code repository.

AthenaK is a complete re-write of the Athena++ adaptive mesh refinement (AMR) code for astrophysical MHD based on the Kokkos library for performance portability. AthenaK runs on any hardware supported by Kokkos, including CPUs, GPUs from most vendors, and ARM processors.

Note that Athena++ is itself an extension of the original C-version of Athena.

AthenaK was written to enable calculations on modern exascale HPC systems that rely on heterogeneous architectures such as GPUs. As such, it only implements a limited number of features that are useful for large-scale calculations. Perhaps the most important limitation compared to Athena++ is that only Cartesian coordinates are implemented.

AthenaK was developed in conjunction with the Parthenon AMR framework and borrows many features from that effort. It is also closely related to the AthenaPK MHD code, which is another implementation of Athena based on the Parthenon framework.

Documentation:

Links in the sidebar provide further information on how build, compile, and run AthenaK, as well as giving further details on the physics modules currently implemented.