| 基于OpenMP的湍流场中颗粒碰撞聚合的并行数值模拟 |
| |
| 引用本文： | 雷洪,赫冀成.基于OpenMP的湍流场中颗粒碰撞聚合的并行数值模拟[J].东北大学学报(自然科学版),2009,30(11):1602-1605. |
| |
| 作者姓名： | 雷洪 赫冀成 |
| |
| 作者单位： | 东北大学,材料电磁过程研究教育部重点实验室,辽宁,沈阳,110004 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金，上海宝钢集团公司联合资助项目，教育音科学技术研究重点项目，高等学校学科创新引智计划项目，中国博士后科学基金，教育部留学回国人员科研启动基金，东北大学留学归国博士启动基金 |
| |
| 摘 要： | 为了快速求解10000个粒子的湍流碰撞聚合问题,采用OpenMP对Smoluchowski方程的FORTRAN求解程序进行了并行处理.数值结果表明:在不改变串行程序结构的情况下,仅对循环体部分进行并行处理,并行效率可高达80%,且串行程序与并行程序的计算结果完全吻合.对于大计算量循环体的并行计算,采用全部处理器进行并行计算时耗时最小.但是对于小计算量循环体的并行计算,采用全部处理器进行并行计算时耗时不一定最小.
|
| 关 键 词： | Smoluchowski方程 并行计算 OpenMP 并行加速比 并行效率 |
OpenMP-based Parallel Numerical Simulation of Collision and Aggregation Among Particles in Turbulent Field |
| |
| LEI Hong,HE Ji-cheng.OpenMP-based Parallel Numerical Simulation of Collision and Aggregation Among Particles in Turbulent Field[J].Journal of Northeastern University(Natural Science),2009,30(11):1602-1605. |
| |
| Authors: | LEI Hong HE Ji-cheng |
| |
| Institution: | (1) Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110004, China |
| |
| Abstract: | To speed up the simulation of the turbulence-oollision-aggregation among 10, 000 particles, OpenMP is introduced to parallelize the FORTRAN source codes for Smoluchowski equation. Numerical results showed that if the serial program' s structure remains unchanged and only the loops are parallelized, the parallel performance will be up to 80%, and the computational results of both parallel and serial programs coincide. For the heavy-load computation of loops, the computing time required is minimum if all CPUs are used, but for the light-load one, it is unsure whether the computing time required is minimum even if all CPUs are used. |
| |
| Keywords: | OpenMP Smoluchowski equation parallel computation OpenMP parallel speedup parallel performance |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《东北大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《东北大学学报(自然科学版)》下载免费的PDF全文 |
