AMReX Introduction
==================

AMReX is a publicly available software framework designed for building
massively parallel block-structured adaptive mesh refinement (AMR)
applications.

Key features of AMReX include:

   - C++ and Fortran interfaces
   - 1-, 2- and 3-D support
   - Support for cell-centered, face-centered, edge-centered, and nodal data
   - Support for hyperbolic, parabolic, and elliptic solves on hierarchical
     adaptive grid structure
   - Optional subcycling in time for time-dependent PDEs
   - Support for particles
   - Support for embedded boundary (cut cell) representations of complex geometries
   - Parallelization via flat MPI, OpenMP, hybrid MPI/OpenMP, hybrid
     MPI/(CUDA or HIP or SYCL), or MPI/MPI
   - Parallel I/O
   - Plotfile format supported by AmrVis, VisIt, ParaView, and yt.

AMReX is developed at LBNL, NREL, and ANL as part of the Block-Structured AMR
Co-Design Center in DOE's Exascale Computing Project.