Invited Presentation

Athena++: a New MHD Simulation Code with Adaptive Mesh Refinement

Author(s): Kengo Tomida (Osaka University / Princeton University); James M. Stone (Princeton University) and the Athena++ Development Team

Presenter: Kengo Tomida (Osaka University / Princeton University)

Athena++ is a new public magnetohydrodynamic (MHD) simulation code with adaptive mesh refinement (AMR) for astrophysical applications, which completely redesigns the Athena MHD code (Stone et al. 2008) from scratch. This code aims to achieve good performance and scalability on modern supercomputers with various architectures, support flexible coordinate systems including general relativity, and include many physical processes such as radiation transfer, self-gravity and non-ideal MHD effects for various astrophysical applications. The code achieves good performance and scalability both on standard Xeon clusters and Xeon Phi (Knights Landing). In this talk, I will discuss the code design, demonstrate the performance, and show some astrophysical applications such as circum stellar disks and molecular cloud formation. The code, documentation and tutorial are publicly available from our website: http://princetonuniversity.github.io/athena/.