Session

DescriptionData locality on new and future generation platforms is expected to be of paramount importance for good performance. However, many applications in astrophysics are by nature multiphysics, involving multiple solvers with diverse data layouts and communication patterns. Additionally, because they can have a large dynamic range of scales, different resolutions in different parts of the domains are often necessary for computational efficiency. Thus, the constraints placed on data management due to the physics models and their corresponding numerical methods can be at cross purposes with data locality. This mini-symposium will examine constraints on data locality for two major class of astrophysics applications, cosmology and supernovae. For each class we include two types of discretization approaches, adaptive mesh refinement and smooth particle hydrodynamics, that have very different data layouts, access patterns and solver characteristics.