Conveners
Session 3.2: Exascale-ready codes for astrophysical problems: case studies and implementations
- Susanne Pfalzner (FZJ)
Idefix is a versatile Godunov MHD finite volume code designed to run on accelerated supercomputers using the C++ Kokkos framework. In this keynote, I will discuss our motivations for creating a new code (in contrast to porting an existing one) and the path we followed. As the code is now public and is becoming more widely used, I will also illustrate the difficulties physicists encounter when...
On the path to exascale the landscape of computer device architectures and corresponding programming models has become much more diverse. While various low-level performance portable programming models are available, support at the application level lacks behind. To address this issue, we present the performance portable block-structured adaptive mesh refinement (AMR) framework Parthenon,...
Numerical simulations of the initial stages of star and planet formation requires developing specialized codes, which can capture large spatial scales and employ efficient parallelization techniques. We will discuss the problems and their solutions, which we encountered when developing the nested-grids numerical gravito-radiation hydrodynamics code ngFEOSAD. Subtilties of the interface between...
Theoretical numerical modeling has become a third pillar of science, alongside theory and experiment (in the case of astrophysics, experiment is mostly replaced by observation). Numerical modeling allows one to compare theory with experimental or observational data in unprecedented detail, and it also provides theoretical insight into physical processes at work in complex systems. We are in...
