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Displaying 1-49 out of 49 total
Optimize Block-Level Cloud Storage System with Load-Balance Strategy
Found in: 2012 26th IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW)
By Li Zhou,Yi-Cheng Wang,Ji-Lin Zhang,Jian Wan,Yong-Jian Ren
Issue Date:May 2012
pp. 2162-2167
Cloud storage systems take advantage of distributed storage technology and virtualization technology, to provide virtual machine clients with customizable storage service. They can be divided into two types: distributed file system and block level storage ...
 
COSC: Combine Optimized Sparse Matrix-Vector Multiplication for CSR Format
Found in: ChinaGrid, Annual Conference
By Ji-Lin Zhang,Li Zhuang,Jian Wan,Xiang-Hua Xu,Cong-Feng Jiang,Yong-Jian Ren
Issue Date:August 2011
pp. 124-129
Sparse matrix-vector multiplication (SpMV) is the most important computational kernel, since its widely application in the scientific and engineering fields. In this paper, a series optimization methods of SpMV for CSR format have been approached. We focus...
 
Modeling Energy Savings in Volunteers Clouds
Found in: 2013 International Conference on Cloud Computing and Big Data (CloudCom-Asia)
By Congfeng Jian,Jian Wan,Christophe Cerin,Paolo Gianessi,Yanik Ngoko
Issue Date:December 2013
pp. 52-59
In this paper we propose different models for the energy consumption in a special existing cloud system named SlapOS. In this cloud, the data center comprises dedicated and volunteer machines, these latter ones are not always available. Our objective is to...
 
Notice of Violation of IEEE Publication Principles Research on Synchronous Low Power Listening for Collection Tree Protocol in WSN
Found in: 2010 Asia-Pacific Services Computing Conference (APSCC 2010)
By Jian Wan, Xin Luo, Xianghua Xu
Issue Date:December 2010
pp. 394-399
Data collection is the fundamental and important function in wireless sensor networks. Due to the restriction of node power, how to improve the node's energy efficiency and prolong the network lifetime is an important issue in practical network deployment....
 
An Image Management System Implemented on Open-Source Cloud Platform
Found in: 2013 IEEE International Symposium on Parallel & Distributed Processing, Workshops and Phd Forum (IPDPSW)
By Jian Wan,Shuting Han,Jilin Zhang,Baojin Zhu,Li Zhou
Issue Date:May 2013
pp. 2064-2070
In Cloud computing, the IAAS provides services and calculation to users by virtual machines. The management of virtual machine images not only consumes a huge amount of storage space, but also gives large pressure on network transmission. By using deduplic...
 
InfoStor: Highly Available Distributed Block Store
Found in: 2013 IEEE International Symposium on Parallel & Distributed Processing, Workshops and Phd Forum (IPDPSW)
By YongJian Ren,YouQing Lin,JiLin Zhang,Jian Wan,Cong-Feng Jiang
Issue Date:May 2013
pp. 1981-1988
In order to adapt to the requirements of the massive scale storage environments, and improve storage space utilization of the data center host, we designed and implemented InfoStor, a heterogeneous environment, distributed block storage system. Through in-...
 
Dual-JT: Toward the high availability of JobTracker in Hadoop
Found in: 2012 IEEE 4th International Conference on Cloud Computing Technology and Science (CloudCom)
By Jian Wan,Minggang Liu,Xixiang Hu,Zujie Ren,Jilin Zhang,Weisong Shi,Wei Wu
Issue Date:December 2012
pp. 263-268
MapReduce is a state-of-the-art computation paradigm that is becoming widely used for processing large-scale datasets. Hadoop is an open-source implementation of MapReduce and follows a masterCslave architecture. This architecture makes Hadoop suffer from ...
 
Workload characterization on a production Hadoop cluster: A case study on Taobao
Found in: 2012 IEEE International Symposium on Workload Characterization (IISWC)
By Zujie Ren,Xianghua Xu,Jian Wan,Weisong Shi,Min Zhou
Issue Date:November 2012
pp. 3-13
MapReduce is becoming the state-of-the-art computing paradigm for processing large-scale datasets on a large cluster with tens or thousands of nodes. It has been widely used in various fields such as e-commerce, Web search, social networks, and scientific ...
 
WaxElephant: A Realistic Hadoop Simulator for Parameters Tuning and Scalability Analysis
Found in: 2012 Seventh ChinaGrid Annual Conference (ChinaGrid)
By Zujie Ren,Zhijun Liu,Xianghua Xu,Jian Wan,Weisong Shi,Min Zhou
Issue Date:September 2012
pp. 9-16
MapReduce is becoming the state-of-the-art computation paradigm for processing large-scale datasets on a large cluster with tens or thousands of nodes. Hadoop, an open-source implementation of MapReduce framework, has gained much popularity due to its high...
 
Parallelism and Auto-Tuner of Irregular Iteration in Reservoir Simulation
Found in: Computer, Consumer and Control, International Symposium on
By Ji-Lin Zhang,Li-Ting Zhu,Jian Wan,Cong-Feng Jiang
Issue Date:June 2012
pp. 44-47
In the field of reservoir numerical simulation, irregular iteration problem is one of the most important reasons to affect the efficiency of large-scale computing. Memory access patterns can't be determined at compiler-time, which brings us difficulties to...
 
Non-Cooperative Gaming and Bidding Model Based Resource Allocation in Virtual Machine Environment
Found in: 2012 26th IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW)
By Jian Wan,Dechuan Deng,Congfeng Jiang
Issue Date:May 2012
pp. 2183-2188
In this paper, we study resource allocation strategy about the virtualized servers. Based on a non-cooperative game theory, we employ bidding model to solve the resource allocation problem in virtualized servers with multiple instances competing for resour...
 
Placement Strategy of Virtual Machines Based on Workload Characteristics
Found in: 2012 26th IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW)
By Jian Wan,Fei Pan,Congfeng Jiang
Issue Date:May 2012
pp. 2140-2145
Traditional Virtual Machines are over-provisioned to provide peak performance and waste a lot of system resources. In this paper, we propose and implement a placement strategy of Virtual Machines based on workload characteristic-s. In our approach, the vir...
 
An Efficient Parallel Implementation for Three-Dimensional Incompressible Pipe Flow Based on SIMPLE
Found in: Cluster Computing and the Grid, IEEE International Symposium on
By Ji-Lin Zhang,Li-Ting Zhu,Jian Wan,Jie Mao,Xiang-Hua Xu,Cong-Feng Jiang,Peng Di
Issue Date:May 2012
pp. 660-667
SIMPLE (Semi-Implicit Method for Pressure-Linked Equations) algorithm is important in the simulation of steady flows. As the traditional 3-D SIMPLE algorithm is time-consuming, we propose a parallel SIMPLE algorithm based on a novel tiling strategy -- alte...
 
An Optimized Degree Strategy for Persistent Sensor Network Data Distribution
Found in: Parallel, Distributed, and Network-Based Processing, Euromicro Conference on
By Wei Zhang,Qinchao Zhang,Xianghua Xu,Jian Wan
Issue Date:February 2012
pp. 130-137
Nodes of wireless sensor networks (WSN) may fail easily due to the lack of energy or disaster scenarios. Such failures can severely reduce the persistence and collection efficiency of sensed data. Network coding technology can be employed to enhance the da...
 
Network Coding Data Collecting Mechanism Based on Prioritized Degree Distribution in Wireless Sensor Network
Found in: Embedded and Ubiquitous Computing, IEEE/IFIP International Conference on
By Wei Zhang,Xianghua Xu,Qinchao Zhang,Jian Wan,Naixue Xiong
Issue Date:October 2011
pp. 350-357
Wireless sensor network (WSN) is a typical distributed storage system, and network coding technology is developed to enhance the data persistence of WSN. However, the traditional distributed coding strategy may cause serious
 
A Comparative Investigation on Different P2P Search Systems in Dynamic Environments
Found in: ChinaGrid, Annual Conference
By Zujie Ren,Xianghua Xu,Jian Wan
Issue Date:August 2011
pp. 116-123
Recently, peer-to-peer (P2P) search technique has become popular in the Web as an alternative to centralized search due to its high scalability and low deployment-cost. Various P2P search systems have been proposed to support full-text search. However, P2P...
 
Resource Allocation in Contending Virtualized Environments through VM Performance Modeling and Feedback
Found in: ChinaGrid, Annual Conference
By Congfeng Jiang,Xianghua Xu,Jilin Zhang,Yunfa Li,Jian Wan
Issue Date:August 2011
pp. 196-203
With active deployment of virtualization in large scale data centers and cloud computing environments, allocation and scheduling of virtual and physical resources raise more challenges and may have negative impacts on system performance due to: (1) the iso...
 
Acoustic Emission Testing Research of Composites Bearing Based on Neural Network
Found in: Intelligent Human-Machine Systems and Cybernetics, International Conference on
By Wang Jianing,Wan Zhenkai
Issue Date:August 2011
pp. 165-168
This paper will apply the Acoustic Emission(AE) technique principle to detect the AE signals of the three-dimensional braided composites under tension and compression test mode and apply wavelet analysis to reduce the AE signal noise. The filtered AE wavef...
 
Improve the Completeness of Passive Monitoring Trace in Wireless Sensor Network
Found in: Asia-Pacific Conference on Services Computing. 2006 IEEE
By Xianghua Xu, Chao Tong, Jian Wan
Issue Date:December 2010
pp. 560-566
The performance evaluation of wireless sensor network based on passive monitoring restricted by two respects: first, passive monitoring trace is incomplete, because monitors can not capture every transmission in the network. Second, the information directl...
 
MSNAP: Fault Tolerant Event Localization in Wireless Sensor Networks
Found in: Asia-Pacific Conference on Services Computing. 2006 IEEE
By Xianghua Xu, Xueyong Gao, Jian Wan
Issue Date:December 2010
pp. 541-547
This paper investigates event localization in wireless sensor networks. We improve the SNAP (Subtract on Negative Add on Positive) localization algorithm and propose the MSNAP (Modified Subtract on Negative Add on Positive) localization algorithm with high...
 
Regulative Growth Codes: Enhancing Data Persistence in Sparse Sensor Networks
Found in: Asia-Pacific Conference on Services Computing. 2006 IEEE
By Xianghua Xu, Chao Shen, Jian Wan
Issue Date:December 2010
pp. 637-642
Growth Codes (GC) enhances the data persistence in dense sensor networks. However, GC exchanges data with neighbors in a completely random way, which may lead to uneven sensor data distribution in sparse sensor network. This significantly reduces the effic...
 
A Control Mechanism about Quality of Service for Resource Scheduling in Multiple Virtual Machine System
Found in: Parallel and Distributed Computing Applications and Technologies, International Conference on
By Yunfa Li, Xiangha Xu, Jian Wan, Wanqing Li
Issue Date:December 2010
pp. 518-523
With the growth of hardware and software resources, It becomes a challenge that how to ensure the Quality of Service (QoS) of resource scheduling in multiple virtual machine system. In order to solve this problem, the authors propose a control mechanism ab...
 
Power Aware Resource Allocation in Virtualized Environments through VM Behavior Identification
Found in: IEEE-ACM International Conference on Green Computing and Communications and International Conference on Cyber, Physical and Social Computing
By Congfeng Jiang, Jilin Zhang, Jian Wan, Xianghua Xu, Yuyu Yin, Ritai Yu, Changping Lv
Issue Date:December 2010
pp. 313-318
Virtualization technology enables server and service consolidation to save more power and operational costs of large scale computing systems. However, the consolidation nature of virtualization intensifies the power densities in a rack, thus resulting in h...
 
Java Multi Threaded Based Parallel Remote Sensing Image Interpretation in Desktop Grid
Found in: ChinaGrid, Annual Conference
By Congfeng Jiang, Xianghua Xu, Jian Wan, Jilin Zhang, Yunfa Li
Issue Date:July 2010
pp. 51-59
Typical remote sensing image interpretation consists of large number of long-lived independent computation jobs such as calibration, correction, and transformation and computation. These time consuming jobs are suitable for execution in desktop grid with h...
 
A Real-Time Scheduling Mechanism of Resource for Multiple Virtual Machine System
Found in: ChinaGrid, Annual Conference
By Yunfa Li, Xianghua Xu, Jian Wan, Wanqing Li, Youwei Yuan
Issue Date:July 2010
pp. 137-143
With the growth of hardware and software resources, the management of virtual machine system is becoming more and more difficult. It has become a very difficult problem that how to schedule the system resource in real time and improve the service performan...
 
Compression of Inverted Index for Comprehensive Performance Evaluation in Lucene
Found in: Computational Sciences and Optimization, International Joint Conference on
By Xianghua Xu, Shengyi Pan, Jian Wan
Issue Date:May 2010
pp. 382-386
Inverted index is the most popular index structure in search engine. Applying index compression can reduce storage space on inverted index, and improve the search performance. In this paper, we achieve comprehensive performance evaluation of three state-of...
 
Performance Evaluation of Compressed Inverted Index in Lucene
Found in: Research Challenges in Computer Science, International Conference on
By Jian Wan, Shengyi Pan
Issue Date:December 2009
pp. 178-181
Inverted index is the most popular index structure in search engine. Applying index compression can reduce storage space on inverted index, and improve the search performance. In this paper, we compare three typical index compression schemes in Lucene—the ...
 
A Utility-Based Adaptive Resource Allocation Policy in Virtualized Environment
Found in: Dependable, Autonomic and Secure Computing, IEEE International Symposium on
By Jian Wan, Peipei Shan, Xianghua Xu
Issue Date:December 2009
pp. 63-68
How to meet the QoS of the applications and improve resource utilization is an important problem in virtualized environment. In this paper, we propose a Utility based resource allocation policy with QoS constrained in virtualized environment. Firstly, we b...
 
Grey Prediction Control of Adaptive Resources Allocation in Virtualized Computing System
Found in: Dependable, Autonomic and Secure Computing, IEEE International Symposium on
By Xianghua Xu, Yanna Yan, Jian Wan
Issue Date:December 2009
pp. 109-114
In order to improve the resource utilization of virtual machine and control the resource allocation online effectively, in this paper, we present a grey prediction control model used for dynamic resource allocation in virtual machine as workloads changing....
 
RAS-M: Resource Allocation Strategy Based on Market Mechanism in Cloud Computing
Found in: ChinaGrid, Annual Conference
By Xindong You, Xianghua Xu, Jian Wan, Dongjin Yu
Issue Date:August 2009
pp. 256-263
Resource management is one of the main issues in Cloud Computing. In order to improve resource utilization of large Data Centers while delivering services with higher QoS to Cloud Clients, a resource allocation strategy based on market (RAS-M) is proposed....
 
Analysis and Evaluation of the Scheduling Algorithms in Virtual Environment
Found in: Embedded Software and Systems, Second International Conference on
By Xindong You, Xianghua Xu, Jian Wan, Congfeng Jiang
Issue Date:May 2009
pp. 291-296
Virtual machine technologies currently receive great interest both in industry and research communities. And it is one of the most important technologies for the coming Cloud Computing. We surveyed the CPU scheduling algorithms in Xen and VMWare systems, a...
 
Aeolus: Reconcilable Key Management Mechanism for Secure Group Communication in Grid
Found in: Asia-Pacific Conference on Services Computing. 2006 IEEE
By Yunfa Li, Xiangha Xu, Jian Wan, Hai Jin, Zongfen Han
Issue Date:December 2008
pp. 1-7
In traditional grid, grid user can not validate whether grid service registered in grid platform can execute correctly or not because the system does not provide the measurement mechanism for grid service. In order to solve this problem, we propose a serie...
 
Performance Evaluation of the CPU Scheduler in XEN
Found in: Information Science and Engieering, International Symposium on
By Xianghua Xu, Peipei Shan, Jian Wan, Yucheng Jiang
Issue Date:December 2008
pp. 68-72
Virtual machines with advances in software and architectural support have emerged as the basis for enterprises to allocate resources recently. One main benefit of virtual machine is server consolidation. However, flexible and complex consolidation results ...
 
Quantifying Performance Properties of Virtual Machine
Found in: Information Science and Engieering, International Symposium on
By Xianghua Xu, Feng Zhou, Jian Wan, Yucheng Jiang
Issue Date:December 2008
pp. 24-28
In this paper we present results from test and quantitative analysis of leading hypervisors Xen, Kvm and Vmware. Our test comparison was carried out using benchmarks which can performance on the Overall performance, performance isolation, and scalability o...
 
Energy Management for Microprocessor Systems: Challenges and Existing Solutions
Found in: Intelligent Information Technology Application Workshops, International Symposium on
By Congfeng Jiang, Xianghua Xu, Jian Wan, Xindong You
Issue Date:December 2008
pp. 1071-1076
Energy is a critical resource to not only mobile, wireless, and battery-powered devices, but also consumer PCs and large scale server system and data centers. High energy consumption results in more heat dissipations, cooling costs and makes servers become...
 
An Efficient Gradient Mechanism of Directed Diffusion in Wireless Sensor Network
Found in: Computational Intelligence and Security, International Conference on
By Jian Wan, Jianrong Wu, Xianghua Xu, Yanna Yan
Issue Date:December 2008
pp. 427-431
In Wireless Sensor Network (WSN), sensor node is limited in energy, thus energy efficiency is an important concern in routing protocol design. And some applications in sensor networks have the requirement of timely delivery, real-time also become needed fo...
 
An Enhanced Routing Protocol for ZigBee/IEEE 802.15.4 Wireless Networks
Found in: Future Generation Communication and Networking
By Xianghua Xu, Daomin Yuan, Jian Wan
Issue Date:December 2008
pp. 294-298
ZigBee is a well accepted industrial standard for wireless sensor networks based on IEEE 802.15.4. Since aiming for the application of low data rate, low price and low power consumption, ZigBee networks have the limited resources such as computation comple...
 
A Novel Fault Detection and Recovery Mechanism for Zigbee Sensor Networks
Found in: Future Generation Communication and Networking
By Jian Wan, Jianrong Wu, Xianghua Xu
Issue Date:December 2008
pp. 270-274
Wireless Sensor networks (WSN) are prone to cause failures due to the constraining factors of energy, memory and communication capability. This paper describes an efficient faulty detection and recovery mechanism for ZigBee network which is an industrial s...
 
An Efficient Self-Healing Scheme for Wireless Sensor Networks
Found in: Future Generation Communication and Networking
By Jian Wan, Wanyong Chen, Xianghua Xu, Miaoqi Fang
Issue Date:December 2008
pp. 98-101
The reliability of wireless sensor networks is affected by faults that may occur due to various reasons. In ZigBee sensor networks, ZigBee specification presents a self-healing process which relies on its tree topology. When a ZigBee node failed, all of th...
 
An Integrated Method for Text Information Retrieval
Found in: Semantics, Knowledge and Grid, International Conference on
By Xiang-hua Xu, Jia-lai Huang, Jian Wan, Cong-feng Jiang
Issue Date:December 2008
pp. 400-403
The algebra-based and ontology-based information retrieval model are investigated in this paper,from which we know the two reinforce each other to some extent. Based on this observation, an integrated method for information retrieval is presented by taking...
 
A Gradient Reconfiguration Mechanism of Directed Diffusion in Wireless Sensor Networks
Found in: Semantics, Knowledge and Grid, International Conference on
By Jian Wan, Jianrong Wu, Xianghua Xu, Miaoqi Fang
Issue Date:December 2008
pp. 287-292
In Wireless Sensor networks (WSNs), most existing routing protocols do not consider a node mobility problem, because nodes in sensor network are generally assumed to be static.The network may get partitioned, due to the mobility of some nodes will cause ot...
 
A Method for Measuring Semantic Similarity of Concepts in the Same Ontology
Found in: Computer and Computational Sciences, International Multi-Symposiums on
By Xiang-hua Xu, Jia-lai Huang, Jian Wan, Cong-feng Jiang
Issue Date:October 2008
pp. 207-213
The present methods for measuring concepts semantic similarity only focus on certain influencing factors, have poor convergence performances and can’t calculate accurately. This paper compares three kinds of ontology –based semantic similarity calculation ...
 
An Authentic Measurement Mechanism of Service for Trusted Grid
Found in: ChinaGrid, Annual Conference
By Yunfa Li, Xiangha Xu, Jian Wan, Hai Jin, Zongfen Han, Xindong You
Issue Date:August 2008
pp. 167-173
In traditional grid, grid user can not validate whether grid service registered in grid platform can execute correctly or not because the system does not provide the measurement mechanism for grid service. In order to solve this problem, we propose a serie...
 
Image Feature Extraction Based on the Two-Dimensional Empirical Mode Decomposition
Found in: Image and Signal Processing, Congress on
By Jian Wan, Longtao Ren, Chunhui Zhao
Issue Date:May 2008
pp. 627-631
This paper presents the approach to extract the local features of the two-dimensional Intrinsic Mode Function (IMF) obtained by 2EMD and detect the edge features using the Monogenic signal. The monogenic signal is a 2D-generalization of the analytic signal...
 
Implementation of CCNUGrid-Based Drug Virtual Screening Applications Using Workflow Techniques
Found in: Grid and Cooperative Computing Workshops, International Conference on
By Yanliang Ren, Qingye Zhang, Jian Wan, Xiangcheng Huang, Peng Xie, Guangfu Yang
Issue Date:October 2006
pp. 371-374
Grid-based Virtual Screening of new potential potent inhibitors has been able to be performed on Center China Normal University Grid (CCNUGrid), by joint of using workflow techniques and Dock 5.0 parallel program packages. The present grid middleware is de...
 
Workload Analysis, Implications, and Optimization on a Production Hadoop Cluster: A Case Study on Taobao
Found in: IEEE Transactions on Services Computing
By Zujie Ren,Jian Wan,Weisong Shi,Xianghua Xu,Min Zhou
Issue Date:April 2014
pp. 307-321
Understanding the characteristics of MapReduce workloads in a Hadoop cluster is the key to making optimal configuration decisions and improving the system efficiency and throughput. However, workload analysis on a Hadoop cluster, particularly in a large-sc...
 
A dynamic sampling methodology for plasma etch processes using Gaussian process regression
Found in: 2013 XXIV International Conference on Information, Communication and Automation Technologies (ICAT)
By Jian Wan,Bahman Honari,Sean McLoone
Issue Date:October 2013
pp. 1-6
Plasma etch is a key process in modern semiconductor manufacturing facilities as it offers process simplification and yet greater dimensional tolerances compared to wet chemical etch technology. The main challenge of operating plasma etchers is to maintain...
   
Coordinate page allocation and thread group for improving main memory power efficiency
Found in: Proceedings of the Workshop on Power-Aware Computing and Systems (HotPower '13)
By Chao Wang, Gangyong Jia, Jian Wan, Liang Shi, Xi Li
Issue Date:November 2013
pp. 1-5
Main Memory is responsible for a large and increasing fraction of the energy consumed by multi-core systems. Therefore, it is critical to address the power issue in the memory subsystem. In this paper, we present a solution to improve memory power efficien...
     
Overall Inverse Kinematics Analysis of Parallel Robot Leg for Rescue Based on Rodrigues Parameters
Found in: Measuring Technology and Mechatronics Automation, International Conference on
By Gang Cheng, Shi-rong Ge, Ai-jun Li, Yong-jian Wan
Issue Date:April 2009
pp. 95-99
A new method to describe the position-stance of parallel robot leg was proposed based on the Rodrigues theory. Comparing with others methods, the kinematic model with Rodrigues parameters has the advantages including least computational parameters, no trig...
 
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