.png){kind=icon}
返回
Memory access optimization for particle operations in computational fluid dynamics-discrete element method simulations
.png){kind=icon}
OA
AI
DOI：10.1016/j.partic.2022.10.004.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Computational Fluid Dynamics -Discrete Element Method is used to model gas-solid systems in several applications in energy, pharmaceutical and petrochemical industries. Computational performance bot-tlenecks often limit the problem sizes that can be simulated at industrial scale. The data structures used to store several millions of particles in such large-scale simulations have a large memory footprint that does not fit into the processor cache hierarchies on current high-performance-computing platforms, leading to reduced computational performance. This paper specifically addresses this aspect of memory access bottlenecks in industrial scale simulations. The use of space-filling curves to improve memory access patterns is described and their impact on computational performance is quantified in both shared and distributed memory parallelization paradigms. The Morton space filling curve applied to uniform grids and k-dimensional tree partitions are used to reorder the particle data-structure thus improving spatial and temporal locality in memory. The performance impact of these techniques when applied to two benchmark problems, namely the homogeneous-cooling-system and a fluidized-bed, are presented. These optimization techniques lead to approximately two-fold performance improvement in particle focused operations such as neighbor-list creation and data-exchange, with -1.5 times overall improvement in a fluidization simulation with 1.27 million particles.(c) 2022 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
Keyword:
CFD-DEM
Memory access optimization
Spatial reordering
Performance optimization
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
4.3
论文数:
2.7K
被引数:
6.1K
机构
引用论文
分享收藏Pre-therapeutic Microglia Activation and Sex Determine Therapy Effects of Chronic Immunomodulation治疗前的微胶质细胞激活和性别决定了慢性免疫调节疗法的效果.png)
OAAI
IF0
OAAI分享收藏Renumbering unstructured grids to improve the performance of codes on hierarchical memory machines
PREAI
分享收藏The NETL MFiX Suite of multiphase flow models: A brief review and recent applications of MFiX-TFM to fossil energy technologies多相流模型的NETL MFiX套件: MFiX-TFM在化石能源技术中的简要回顾和最新应用OAAI
OAAI分享收藏
查看更多内容