Core Concepts
AMReX and pyAMReX provide advanced features for block-structured mesh applications with adaptive mesh refinement, enabling efficient GPU data access and rapid prototyping.
Abstract
The content discusses the development of AMReX as a software framework for block-structured adaptive mesh refinement algorithms. It introduces pyAMReX, a Python binding that facilitates interaction with AMReX-based applications. The article covers key features such as performance portability, kernel fusion, memory management, zero-copy APIs, and integration with machine learning frameworks. It also highlights the use cases in various applications like WarpX and ImpactX.
Abstract:
AMReX is a software framework developed for block-structured mesh applications with adaptive mesh refinement (AMR).
pyAMReX serves as a Python binding to bridge AMReX-based application codes with the data science ecosystem.
Introduction:
AMReX supports multiphysics applications using hierarchical representation for solution levels.
Design considerations include performance portability on different architectures.
New Features and Optimizations:
Kernel fusion capability reduces latency by launching multiple small kernels together.
Compile-time kernel specialization optimizes GPU kernel execution based on runtime conditions.
Memory Management:
AMReX provides memory arenas to optimize memory allocation on heterogeneous systems.
Zero-Copy APIs:
Standardized interfaces enable exchanging data between Python modules without creating copies.
Computing in Python:
pyAMReX allows accelerated array operations on fields and particle data using frameworks like CuPy or NumPy.
Project Integration:
Integration of pyAMReX enhances existing applications with Python capabilities and supports standalone application development.
Stats
CUDA、HIP、SYCLをサポートする現在のHPCアーキテクチャで高いパフォーマンスを達成します。
AMD MI250x、NERSCのNVIDIA A100マシンPerlmutter、ALCFのIntel Xe GPUsを使用するAurora、およびRikenのARM A64FX CPUsを使用するFugakuプラットフォームなど、世界最大級のスーパーコンピューターで成功裏に実行されています。