Zhou Wenping

Zhou Wenping

Main Research Directions：CG, VR, Digital Twins, Cloud Computing, Internet of Things, Big data, Machine Learning, etc

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Posts

CentOS6中OpenMP的运行时间或运行性能分析

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CentOS6中OpenMP的运行时间或运行性能分析
本人参考饮水思源的代码在双核与四核机器的操作过程中，发现clock()针对并行运行时间计时不准的问题，运行结果显示并行方式和串行的时间基本相近，使得并行方式在时间计数上并未有明显优势。本文就其运行时间统计做相关分析，通过改进的方式，对时间进行了判断，首先在For循环中加入打印语句判断是否多核执行；然后判断系统确实是多核执行后，在For循环中加入等待函数sleep，运行程序并人工计时，这时的时间在双核机器并行比串行要快近两倍，四核机器并行时间比串行快近四倍。所以可知clock（）不适合做并行程序的计时工具，需要找到相关的替代。

Blog Post number 2

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Blog Post number 3

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Blog Post number 1

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portfolio

publications

燃气公司员工操作仿真和模拟培训系统的设计和实现

Published in 硕士毕业论文, 2008

燃气行业是一个高危行业,天然气是一种易燃易爆的洁净能源,要求管道燃气企业的操作岗位人员必须具有专业化的燃气理论知识和过硬的操作技能,才能确保企业的本质安全。通过当前比较流行的仿真模拟技术实现的模拟培训系统在诸多行业中已有比较成熟的应用,尤其在化工企业中应用上比较广泛,该类系统主要是通过合理、安全、多频次的对员工进行仿真操作模拟训练,以达到提高员工实际操作技能的目的。 首先,论文阐述了国内外E-Learning在线学习系统的研究与发展现状,引出了虚拟现实技术与E-Learning在线学习相结合的培训系统模式。 其次,通过分析虚拟现实系统使用的各项技术,包括Creator建模技术、Vega仿真渲染技术和PCI-1714数据采集技术的功能特征与应用,给出了本系统的总体技术框架。 最后,通过分析燃气行业标准与燃气公司需求,对燃气行业关键设施进行三维建模,并进一步实现了设施工作原理的动态演示和模拟;通过对数据采集卡接口的二次开发实现了对燃气公司现有小型实验系统的监控,从而可以实时采集员工操作时的各项燃气设备参数,为考核员工实践操作技能提供依据。 简言之,本论文的总体思路是依据燃气传输的行业标准,通过使用虚拟现实的相关技术,对燃气传输设备进行模拟仿真,向燃气公司员工演示燃气设备的结构原理及燃气传输系统运行规律,从而提高员工的理论水平和实践能力。结论表明燃气公司员工操作仿真与模拟培训系统具有相当的理论价值与应用价值。

Recommended citation: Zhou Wenping. (2008). "燃气公司员工操作仿真和模拟培训系统的设计和实现." 哈尔滨工业大学,硕士毕业论文. https://jz.docin.com/p-1430115553.html

Review on parallel crowd simulation

Published in Application Research of Computers, 2013

This paper compared three types of parallel architecture of crowd simulation such as multi-core CPU based architecture, GPU based architecture and distributed system architecture, and proposed a mixed structure architecture. It summed up multiple algorithms on task partition under parallel environment such as partition by space region or partition by agents. It analyzed performance evaluation methods of parallel crowd simulation. Finally, it summarized the key points and direction of using parallel computing method for crowd simulation.

Recommended citation: Wenping Z , Haoxuan T , Zhenzhou JI ,et al."Review on parallel crowd simulation",Application Research of Computers,30.1(2013):30-35. https://www.arocmag.com/article/01-2013-01-006.html?_blank

An Environment Structure Understanding Task Partition Method for Distributed Crowd Simulation

Published in Acta Electronica Sinica, 2014

The paper proposed an adaptive partition method considering environmental structural factors,which is applicable for multilayered complex environment.Simulation scene is automatically extracted to walkable adjacent areas,and a coarse granularity partition based on regions is applied to get shorter execution time.The inter-individual perceptual computing of any two individuals separated by obstacle between two adjacent regions is negligible,so it efficiently reduces the inter-node communication cost and makes the algorithm more suitable for large scale crowd simulation.The results show the proposed algorithm gets lower cost and higher performance.An efficient distributed simulation model is designed for the partition method,and a distributed system based on the model gets higher simulation performance on both inner door and out door scene.The performance of system with the same crowd size linearly increases with the increase of compute nodes,which proves high scalability of the system.

Recommended citation: ZHOU Wen-ping, TANG Hao-xuan, JI Zhen-zhou."An Environment Structure Understanding Task Partition Method for Distributed Crowd Simulation[J]".Acta Electronica Sinica, 2014, 42(12). https://www.ejournal.org.cn/CN/10.3969/j.issn.0372-2112.2014.12.017

talks

teaching

Teaching experience 1

Undergraduate course, University 1, Department, 2014

This is a description of a teaching experience. You can use markdown like any other post.

Teaching experience 2

Workshop, University 1, Department, 2015

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