Performance Evaluation and Prediction on a Clustered SMP System for Aerospace CFD Applications with Hybrid Paradigm

摘要

Japan Aerospace Exploration Agency has introduced a terascale clusterd SMP system as a main compute engine of Numerical Simulator III for aerospace science and engineering research purposes. The system is using Fujitsu PRIMEPOWER HPC2500; it has computing capability of 9.3Tflop/s peak performance and 3.6TB of user memory, with 56 compute nodes of 32-way SMP. In this paper, we first present the performance evaluation results for aerospace CFD applications with hybrid programming paradigm used at JAXA on the clusterd SMP system. Next, we propose a performance prediction formula for hybrid codes based on a simple extension of Amhhal's law, and discuss about the predicted and measured performances for some typical hybrid CFD codes.