PCMS: Parallel Coupler For Multimodel Simulations
Jacob S. Merson and Cameron W. Smith and Mark S. Shephard and Fuad Hasan and Abhiyan Paudel and Angel Castillo-Crooke and Joyal Mathew and Mohammad Elahi
本文介绍了用于多模型仿真(PCMS)的并行耦合器,这是一种新的GPU加速广义耦合框架,用于在领导级超级计算机上耦合模拟代码。 PCMS包括分布式控制和现场映射方法,最多五个维度。 对于现场映射,PCMS可以利用离散化和现场信息来适应物理限制。 PCMS通过将陀螺微湍流代码XGC与蒙特卡罗中性传输代码DEGAS2耦合,并将高能粒子传输代码(GNET)耦合到陀螺微湍流代码(GTC)的5D分布功能来证明。 弱缩放也在多达2,080个Frontier的GPU上展示,弱扩展效率高达85%。
This paper presents the Parallel Coupler for Multimodel Simulations (PCMS), a new GPU accelerated generalized coupling framework for coupling simulation codes on leadership class supercomputers. PCMS includes distributed control and field mapping methods for up to five dimensions. For field mapping PCMS can utilize discretization and field information to accommodate physics constraints. PCMS is demonstrated with a coupling of the gyrokinetic microturbulence code XGC with a Monte Carlo neutral tr...