Add amrex topic

Author: WeiqunZhang

topics/amrex/amrex.png

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+---
+display_name: AMReX
+github_url: https://github.com/AMReX-Codes/amrex/
+logo: amrex.png
+related: amr, adaptive-mesh-refinement, high-performance-computing, scientific-computing
+short_description: Block-structured AMR framework for high-performance computing
+topic: amrex
+url: https://amrex-codes.github.io/amrex/
+---
+AMReX is a software framework for building massively parallel, block-structured adaptive mesh refinement (AMR) applications. It supports complex geometries, multilevel solvers, and particle methods. Parallelism is achieved via MPI across nodes and on-node parallelism using OpenMP for CPUs and CUDA/HIP/SYCL for GPUs. AMReX powers high-performance simulations in fields such as astrophysics, combustion, cosmology, and accelerator modeling.