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Fifth International Conference on Semantics,Knowledge and grid(第五届语义、知识与网格国际会议 SKG 2009)

作者： Xia Xie Ke Fan Xuanhua Shi Song Wu Hai Jin Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China

Based on increasing popularity of cloud computing, social computing and web 2.0 technology, Internet resources are extremely increasing. How to provide service invoking interfaces ceaselessly while minimizing the cost of service development, which can meet the growing needs of end users, becomes a challenging issue for service providers. Meanwhile, service mashup technology is getting more attention in both enterprise and academia for building new end users applications fast in the complex and heterogeneous network environment. Therefore, we propose a new method of service mashup with the advantages of the cloud, grid, web services and other technologies. We develop cloud oriented Service MashUp system prototype (SMU). In SMU, we support the service information interaction, classification, and process during the procedure of service mashup to meet various needs of the multi-level and the multi-role of service applications. Our experiments show that SMU can reach the purpose of building personal service applications quickly and easily.

关键词： Web service mashup cloud computing

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ImageFlow: Workflow Based Image Processing with Legacy Program in grid

ImageFlow: Workflow Based Image Processing with Legacy Progr...

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International Seminar on Future Information technology and Management Engineering, FITME

作者： Haijun Cao Hai Jin Song Wu Shadi Ibrahim Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory Huazhong University of Science and Technology Wuhan China

As image processing has been widely used in many scientific research areas, how to find a powerful and inexpensive approach to solve large-scale image processing problems poses great challenges. In this paper, based on workflow theory and Web service technology, we present a novel image processing framework called ImageFlow, which enables images to be processed by distributed legacy software coupled with interconnected target systems. The salient features of ImageFlow are: (1) Workflow based image processing; (2) General running service (GRS) for legacy programs; (3) Adaptive data transfer mechanism with SOAP attachment and gridFTP; and (4) Workflow based software deployment. The experimental results show that our approaches are feasible and efficient. SOAP attachment over HTTP is more preferable for transferring small size of data, while gridFTP performs better when transferring large-scale data. In addition, compared with the sequential deployment model, workflow based software deployment can gain higher speedup when constructing large-scale systems.

关键词： Image processing Web services Containers Large-scale systems Simple object access protocol Image storage Engines Job design grid computing Application software

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Two-layered metadata service model in grid environment

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International Journal of High Performance computing and Networking 2009年第2期6卷 130-136页

作者： Xiong, Muzhou Jin, Hai Wu, Song Cluster and Grid Computing Lab Huazhong University of Science and Technology Wuhan 430074 China

The primary problem of data management in grid environment is how to effectively organise the geographical distributed storage devices to support the collaborative data operations. This paper focuses on how to resolve the above problem and presents a two-layered metadata service model in a grid environment which uses the locality of users' distribution and provides a platform for grid data management. It also presents a metadata replica model, which uses a sparse strongly connected graph to connect replica metadata. In this way it can obtain high performance and availability of metadata services in a grid environment. Copyright © 2009, Inderscience Publishers.

关键词： grid computing

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2009 IEEE International Conference on Information and Automation(2009年 IEEE信息与自动化国际学术会议)

作者： Zehua Lv Hai Jin Pingpeng Yuan Services Computing Technology and System Laboratory Cluster and Grid Computing laboratoryHuazhong University of Science and TechnologyWuhan430074China

Interval Type-2 Fuzzy Sets (IT2 FSs) has been used in wide range of applications, such as decision making, pattern recognitions. However, there is little investigation on the clustering techniques of IT2 FSs, since it is very important for measuring the degree of similarity between interval type-2 fuzzy sets in clustering research. In this paper, we give a novel method to represent interval type-2 fuzzy sets by a series of linear functions. This method is named as triangular representation because the curves of the functions and the coordinates shape into triangles. A new kind of similarity between interval type-2 fuzzy sets based on triangle is given and the validity of this method is proven. Furthermore, several numerical examples are given to show that the proposed similarity measure is reasonable and better than any existing methods.

关键词： Fuzzy sets Frequency selective surfaces laboratories Pattern recognition Uncertainty Computers grid computing Electronic mail Decision making Automation

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Building dynamic integrity protection for multiple independent authorities in virtualization-based infrastructure

Building dynamic integrity protection for multiple independe...

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2009 10th IEEE/ACM International Conference on grid computing, grid 2009

作者： Cheng, Ge Jin, Hai Zou, Deqing Zhang, Xinwen Li, Min Yu, Chen Xiang, Guofu Cluster and Grid Computing Lab. School of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China Samsung Information Systems America San Jose CA United States

ISBN: (纸本)9781424451494

In grid and cloud computing infrastructures, the integrity of a computing platform is a critical security requirement in order to provide secure and honest computing environments to service providers and resource consumers. However, due to the fact that software components running on a single platform are usually provided and maintained by different authorities which are potentially untrusted to each other, the problem to monitor and protect runtime system integrity become very challenging and has not been well addressed yet. In this paper, we present a virtualization based dynamic integrity protection method which ensures that only appropriate authorities can control over their components without interfering with other component providers or authorities. In our solution, integrity requirements defined by the authorities of upper components (e.g., service middleware and applications) are respected by preventing the underlying components (e.g., operating system) from exposing their sensitive data, which can be caused by update of the underlying components or other malicious actions. We implement our solution on Xen-based platform, and our evaluation results show that the solution is effective for integrity protection with acceptable performance overhead. © 2009 IEEE.

关键词： Virtualization

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VRFPS: A Novel Virtual Machine-Based Real-time File Protection System

VRFPS: A Novel Virtual Machine-Based Real-time File Protecti...

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International Conference on Software Engineering Research, Management and Applications (SERA)

作者： Feng Zhao Yali Jiang Guofu Xiang Hai Jin Wenbin Jiang Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

With the development of virtualization technology, file protection in virtual machine, especially in guest OS, becomes more and more important. Traditional host-based file protection system resides the critical modules in monitored system, which is easily explored and destroyed by malwares. Moreover, in order to protect the multiple operation systems running on the same platform, it is necessary to install independent file protection system for each of them, which greatly wastes computing resources and brings serious performance overhead. In this paper, a novel VM-based real-time file protection system, named VRFPS, is proposed to solve these problems. First, virtual machine monitor introspects all file operations of guest OS. Then, semantic gap between disk block and logic files is narrowed by blktap. Finally, a virtual sandbox is implemented in privileged domain to prevent protected files in guest domain from modifying illegally. Our approach is highly isolated, transparent and without modification on virtual machine monitor and guest OS. The experimental results show that the presented system is validate and of low performance overhead.

关键词： Real time systems Protection Virtual machining Kernel Operating systems Virtual machine monitors Application virtualization Data security Access control Software engineering

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PMonitor: A Lightweight Performance Monitor for Virtual Machines

PMonitor: A Lightweight Performance Monitor for Virtual Mach...

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International Workshop on Education technology and Computer Science, ETCS

作者： Zhiyuan Shao Hai Jin Xiaowen Lu Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

Performance monitor for virtual machines can monitor the performance metrics of virtual machines and gain the resource consumption status, and thus provide reliable basis for system performance evaluation and further management. However, at current stage, such performance monitor systems for the virtualized systems are inadequate and inefficient. In this paper, we propose a lightweight performance monitor system model for virtual machines, called PMonitor. Through prototype implementation and experiments, we find that PMonitor consumes very few processing power, which is much lower than other open source performance monitors running on the virtualized environments.

关键词： Condition monitoring Virtual machine monitors Virtual machining Measurement Performance gain System performance Resource management Power system management Power system modeling Virtual prototyping

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Live virtual machine migration with adaptive, memory compression

Live virtual machine migration with adaptive, memory compres...

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IEEE International Conference on cluster computing

作者： Hai Jin Li Deng Song Wu Xuanhua Shi Xiaodong Pan Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

Live migration of virtual machines has been a powerful tool to facilitate system maintenance, load balancing, fault tolerance, and power-saving, especially in clusters or data centers. Although pre-copy is a predominantly used approach in the state of the art, it is difficult to provide quick migration with low network overhead, due to a great amount of transferred data during migration, leading to large performance degradation of virtual machine services. This paper presents the design and implementation of a novel memory-compression-based VM migration approach (MECOM) that first uses memory compression to provide fast, stable virtual machine migration, while guaranteeing the virtual machine services to be slightly affected. Based on memory page characteristics, we design an adaptive zero-aware compression algorithm for balancing the performance and the cost of virtual machine migration. Pages are quickly compressed in batches on the source and exactly recovered on the target. Experiment demonstrates that compared with Xen, our system can significantly reduce 27.1% of downtime, 32% of total migration time and 68.8% of total transferred data on average.

关键词： Virtual machining Virtual manufacturing Degradation Voice mail Power system management Load management Fault tolerant systems Energy management Chromium Computers

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Yarqs: Yet Another Range Queries Schema in DHT Based P2P Network

Yarqs: Yet Another Range Queries Schema in DHT Based P2P Net...

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International Conference on Computer and Information technology (CIT)

作者： Hao Zhang Hai Jin Qin Zhang Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

Range query in DHT based P2P network is a hot topic in recent researches. The hashing function in DHT protocols makes the data hard to keep their original order relationship. Hence range queries for such networks become difficult. This paper presents the design of Yarqs-a new schema to achieve range queries in DHT based P2P networks. By using the inherent characteristics of DHT based networks, Yarqs catches the data pass the nodes and organizes them as a cache network. The range queries are deployed over the cache network. Yarqs does not change the design of the DHT overlay and builds the architecture for range queries by using the historical DHT queries data. Yarqs supports inherent load balancing. We also study the performance of Yarqs in evaluation section. The experiments to check the influences of different parameters of Yarqs are deployed and analyzed.

关键词： Load management Peer to peer computing Data structures Protocols grid computing Computer networks Information technology Computer science Dictionaries Costs

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Optimize Performance of Virtual Machine Checkpointing via Memory Exclusion

Optimize Performance of Virtual Machine Checkpointing via Me...

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Chinagrid Annual Conference (Chinagrid)

作者： Haikun Liu Hai Jin Xiaofei Liao Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

Virtual machine (VM) level checkpoints bring several advantages which process-level checkpoint implementation can hardly provide: compatibility, transparence, flexibility, and simplicity. However, the size of VM-level checkpoint may be very large and even in the order of gigabytes. This disadvantage causes the VM checkpointing and restart time become very long. To reduce the size of VM checkpoint, this paper proposes a memory exclusion scheme using ballooning mechanism, which omits saving unnecessary free pages in the VM. We implement our prototype in Xen environment. Experimental measurements show our approach can significantly reduce the size of VM checkpoint with minimal runtime overhead, thereby greatly improve the checkpoint performance.

关键词： Virtual machining Checkpointing Virtual manufacturing Virtual machine monitors Hardware Operating systems Containers Encapsulation Fault tolerant systems Availability

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