Performance Evaluation of Memory-Centric ARMv8 Many-Core Architectures: A Case Study with Phytium 2000+

This article presents a comprehensive performance evaluation of Phytium 2000+ , an ARMv8-based 64-core architecture. We focus on the cache and memory subsystems, analyzing the characteristics that impact the high-performance computing applications. We provide insights into the memory-relevant performance behaviours of the Phytium 2000+ system through micro-benchmarking. With the help of the well-known roofline model, we analyze the Phytium 2000+ system, taking both memory accesses and computations into account. Based on the knowledge gained from these micro-benchmarks, we evaluate two applications and use them to assess the capabilities of the Phytium 2000+ system. The results show that the ARMv8-based many-core system is capable of delivering high performance for a wide range of scientific kernels.