大型复杂油藏CPU与GPU混合并行数值模拟  

Hybrid parallel numerical simulation of CPU and GPU in large-scale and complex oil reservoir

作　　者：廉培庆[1] 计秉玉[1] 段太忠[1] 姜凤光[1] LIAN Peiqing;JI Bingyu;DUAN Taizhong;JIANG Fengguang(Sinopec Petroleum Exploration and Production Research Institute, Beijing 100083, China)

机构地区：[1]中国石化石油勘探开发研究院,北京100083

出　　处：《中国科技论文》2020年第5期537-541,共5页China Sciencepaper

基　　金：国家重大科技专项(2016ZX05033-003)。

摘　　要：为了实现大型复杂油藏混合并行数值模拟,通过高速InfiniBand网络连接多个机群的CPU节点,建立了新型计算平台,安装了并行油藏数值模拟软件系统,实现了大规模油藏数值模拟的并行计算。提出了不同CPU分区负载平衡优化方法,旨在研究GPU与CPU并行加速技术,提高大型复杂油藏数值模拟的时效性。以某油田为例,开展了多组分千万网格模型并行数值模拟的测试。测试结果显示:在保持各CPU分区负载平衡率高于90%的情况下,计算时间缩短了25%;随着CPU核数增加,加速比增幅逐渐减小;CPU与GPU混合并行,可比单纯CPU并行提速3.96~6.81倍,CPU核数越多,各分区数据交换量也随之增加,GPU承担的计算量增大。GPU与CPU并行加速技术及多组分千万网格模型并行数值模拟的实现,为实现复杂油藏精细地质和流体模拟提供了基础。To realize the parallel computing of large-scale reservoir numerical simulation,a new computing platform is established through the high-speed InfiniBand network to connect the CPU nodes of many clusters,and a parallel reservoir numerical simulation software system is installed.This paper put forward different methods of CPU partition load balance optimization,and studied GPU and CPU parallel acceleration technology to improve the timeliness of large-scale complex reservoir numerical simulation.Taking an oilfield as an example,the multi-component and ten million grid model parallel numerical simulation test was carried out,keeping the load balance rate of each CPU partition higher than 90%,and the calculation time reduced by 25%.And as the number of CPU cores increases,the increase of acceleration ratio decreases.The parallel speed of CPU and GPU can be increased by 3.96-6.81 times compared with the parallel speed of single CPU.The more CPU cores,the more data exchange capacity of each partition,and the more calculation load GPU bears.GPU and CPU parallel acceleration technology and multi-component ten million grid model parallel numerical simulation provide the basis for the realization of complex reservoir fine geology and fluid simulation.

关 键 词：组分模型 数值模拟 千万网格 负载平衡优化 CPU和GPU并行 

分 类 号：TE319[石油与天然气工程—油气田开发工程]