I. Alshabani, R. Olejnik, B. Toursel, M. Tudruj, E. Laskowski
We propose a new component framework over a middleware platform for grid computing: DG-ADAJ (desktop grid-adaptive distributed application in Java). Our platform allows having a single system image (SSI) of the grid platform. It gives a special mechanism at middleware level which assures dynamic and automatic adaptation to variations of computation methods and execution platform. DG-ADAJ gives also specific mechanisms based on control components which helps a users to build component-based parallel/distributed applications. We use the CCA (common component architecture) as a component architecture model for our framework. CCADAJ (CCA-ADAJ) is a layer above the DG-ADAJ environment, which helps user to build his parallel/distributed applications by assembling components in a transparent way and which exploits the parallelism of the environment
{"title":"A Framework for Desktop GRID Applications: CCADAJ","authors":"I. Alshabani, R. Olejnik, B. Toursel, M. Tudruj, E. Laskowski","doi":"10.1109/ISPDC.2006.2","DOIUrl":"https://doi.org/10.1109/ISPDC.2006.2","url":null,"abstract":"We propose a new component framework over a middleware platform for grid computing: DG-ADAJ (desktop grid-adaptive distributed application in Java). Our platform allows having a single system image (SSI) of the grid platform. It gives a special mechanism at middleware level which assures dynamic and automatic adaptation to variations of computation methods and execution platform. DG-ADAJ gives also specific mechanisms based on control components which helps a users to build component-based parallel/distributed applications. We use the CCA (common component architecture) as a component architecture model for our framework. CCADAJ (CCA-ADAJ) is a layer above the DG-ADAJ environment, which helps user to build his parallel/distributed applications by assembling components in a transparent way and which exploits the parallelism of the environment","PeriodicalId":196790,"journal":{"name":"2006 Fifth International Symposium on Parallel and Distributed Computing","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133009844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In many parallel and distributed applications broadcasting represents a natural way of communication between processes/objects/actors. In addition mobility is often mandatory, as for instance, for the development of ad-hoc networks applications. The fusion of these two concepts into one unique and coherent model of concurrency represents a great interest for the development of such classes of applications together with appropriate programming models and languages. An original model that combines mobility and selective broadcasting has been developed by Ene and Muntean: the bpi-calculus. The "mobile ambients" by Gordon and Cardelli, represents also, among others, an interesting framework for mobility and ubiquity of applications. The goal of this paper is to propose a model for broadcasting secure systems that we consider to be more appropriate for ad-hoc networks and ubiquitous applications, reinforcing the mobility and security aspects
{"title":"Towards a Model for Broadcasting Secure Mobile Processes","authors":"Victor Moraru, T. Muntean, E. Guțuleac","doi":"10.1109/ISPDC.2006.52","DOIUrl":"https://doi.org/10.1109/ISPDC.2006.52","url":null,"abstract":"In many parallel and distributed applications broadcasting represents a natural way of communication between processes/objects/actors. In addition mobility is often mandatory, as for instance, for the development of ad-hoc networks applications. The fusion of these two concepts into one unique and coherent model of concurrency represents a great interest for the development of such classes of applications together with appropriate programming models and languages. An original model that combines mobility and selective broadcasting has been developed by Ene and Muntean: the bpi-calculus. The \"mobile ambients\" by Gordon and Cardelli, represents also, among others, an interesting framework for mobility and ubiquity of applications. The goal of this paper is to propose a model for broadcasting secure systems that we consider to be more appropriate for ad-hoc networks and ubiquitous applications, reinforcing the mobility and security aspects","PeriodicalId":196790,"journal":{"name":"2006 Fifth International Symposium on Parallel and Distributed Computing","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114236917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The novel parallel/distributed application control method, discussed in this paper, is based on the use of global states monitoring. Application processes report their local states to monitors. The monitors construct global states, analyze them and send control signals to processes to stimulate necessary actions. A number of application areas of this control method are examined. Tests results and gained experience are presented for irregular computation, load balancing and dynamic workflow implementations. It is shown, that the new control method can lead to a better performance than message passing and that it provides a useful and convenient framework, facilitating program development and maintenance
{"title":"Usage of Global States-Based Application Control","authors":"J. Borkowski, D. Kopanski, M. Tudruj","doi":"10.1109/ISPDC.2006.53","DOIUrl":"https://doi.org/10.1109/ISPDC.2006.53","url":null,"abstract":"The novel parallel/distributed application control method, discussed in this paper, is based on the use of global states monitoring. Application processes report their local states to monitors. The monitors construct global states, analyze them and send control signals to processes to stimulate necessary actions. A number of application areas of this control method are examined. Tests results and gained experience are presented for irregular computation, load balancing and dynamic workflow implementations. It is shown, that the new control method can lead to a better performance than message passing and that it provides a useful and convenient framework, facilitating program development and maintenance","PeriodicalId":196790,"journal":{"name":"2006 Fifth International Symposium on Parallel and Distributed Computing","volume":"238 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114638219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper discusses iterative algorithms for reconstruction of 2D images. The formulation of the distributed algorithm and its properties are described. The details of the distributed implementation of the ART (algebraic reconstruction technique) are presented. Parallel implementation in a parallel system based on dynamically configurable clusters is proposed
{"title":"Distributed Formulation of Artificial Reconstruction Technique with Reordering of Critical Data Sets","authors":"B. Butrylo, M. Tudruj, L. Masko","doi":"10.1109/ISPDC.2006.20","DOIUrl":"https://doi.org/10.1109/ISPDC.2006.20","url":null,"abstract":"This paper discusses iterative algorithms for reconstruction of 2D images. The formulation of the distributed algorithm and its properties are described. The details of the distributed implementation of the ART (algebraic reconstruction technique) are presented. Parallel implementation in a parallel system based on dynamically configurable clusters is proposed","PeriodicalId":196790,"journal":{"name":"2006 Fifth International Symposium on Parallel and Distributed Computing","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127399847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper we introduce a two-phase dynamic load-balancing technique for P2P computing systems. The first phase consists of mapping a P2P network onto a hierarchical topology based on 1-D space tessellations. This hierarchy is called TreeP (tree based P2P architecture). The second phase consists of balancing the load among the peers using the PSLB (positional scan load-balancing) technique, which is well suited for regular topologies. We study this technique and optimize its implementation on the TreeP topology. This technique is simple, efficient, scalable, and does not introduce a considerable overhead as shown in the experimental results and theoretical study
{"title":"On the Efficiency of Dynamic Load Balancing on P2P Irregular Network Topologies","authors":"M. W. Akhtar, Mohand Tahar Kechadi","doi":"10.1109/ISPDC.2006.35","DOIUrl":"https://doi.org/10.1109/ISPDC.2006.35","url":null,"abstract":"In this paper we introduce a two-phase dynamic load-balancing technique for P2P computing systems. The first phase consists of mapping a P2P network onto a hierarchical topology based on 1-D space tessellations. This hierarchy is called TreeP (tree based P2P architecture). The second phase consists of balancing the load among the peers using the PSLB (positional scan load-balancing) technique, which is well suited for regular topologies. We study this technique and optimize its implementation on the TreeP topology. This technique is simple, efficient, scalable, and does not introduce a considerable overhead as shown in the experimental results and theoretical study","PeriodicalId":196790,"journal":{"name":"2006 Fifth International Symposium on Parallel and Distributed Computing","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117202265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rocco Aversa, B. D. Martino, N. Mazzocca, S. Venticinque
The integration of Web services and software agents brings new opportunities and helps in defining new kinds of services too. A very interesting approach comes from the adoption of "mobile agents" to design and develop a service oriented architecture that supports the access to distributed services by heterogeneous handheld devices. This paper describes the functional model and the architecture design of a platform for services composition and delivery. Mobile agents are able to access and compose services accessing them by standard interfaces. User authentication, service discovery and publication, personalization are other provided facilities. Technological interoperability is provided by Web services technology. Code mobility is exploited to reconfigure the server platform moving agents to the available nodes, or to reconfigure the user devices providing it with the needed client software
{"title":"Web Services Composition and Delivery Using a Mobile Agents Based Infrastructure","authors":"Rocco Aversa, B. D. Martino, N. Mazzocca, S. Venticinque","doi":"10.1109/ISPDC.2006.56","DOIUrl":"https://doi.org/10.1109/ISPDC.2006.56","url":null,"abstract":"The integration of Web services and software agents brings new opportunities and helps in defining new kinds of services too. A very interesting approach comes from the adoption of \"mobile agents\" to design and develop a service oriented architecture that supports the access to distributed services by heterogeneous handheld devices. This paper describes the functional model and the architecture design of a platform for services composition and delivery. Mobile agents are able to access and compose services accessing them by standard interfaces. User authentication, service discovery and publication, personalization are other provided facilities. Technological interoperability is provided by Web services technology. Code mobility is exploited to reconfigure the server platform moving agents to the available nodes, or to reconfigure the user devices providing it with the needed client software","PeriodicalId":196790,"journal":{"name":"2006 Fifth International Symposium on Parallel and Distributed Computing","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122532662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper we present the design and implementation of a multiagent framework for executing multiple concurrent jobs in a grid environment. Resource broker plays an imperative role in our framework. The aim of the resource broker is to find, select, reserve and allocate suitable resources to each job submitted by the client. Resource broker always tries to optimize resource utilization and ensure fairness. The multiagent framework assists in executing multiple concurrent jobs in an adaptive execution environment. Services offered by the framework include resource brokering, performance analysis, local tuning and more importantly rescheduling depending on the changing resource requirements. Part of the framework makes use of mobile agents for scheduling and rescheduling purposes. The paper discusses the implementation of the resource brokering and also describes the implementation of a part of the framework which schedules and reschedules the jobs and manages the resources on the basis of some performance monitoring data
{"title":"A Multi-agent Framework for Resource Brokering of Multiple Concurrent Jobs in Grid Environment","authors":"Sarbani Roy, S. Dasgupta, N. Mukherjee","doi":"10.1109/ISPDC.2006.3","DOIUrl":"https://doi.org/10.1109/ISPDC.2006.3","url":null,"abstract":"In this paper we present the design and implementation of a multiagent framework for executing multiple concurrent jobs in a grid environment. Resource broker plays an imperative role in our framework. The aim of the resource broker is to find, select, reserve and allocate suitable resources to each job submitted by the client. Resource broker always tries to optimize resource utilization and ensure fairness. The multiagent framework assists in executing multiple concurrent jobs in an adaptive execution environment. Services offered by the framework include resource brokering, performance analysis, local tuning and more importantly rescheduling depending on the changing resource requirements. Part of the framework makes use of mobile agents for scheduling and rescheduling purposes. The paper discusses the implementation of the resource brokering and also describes the implementation of a part of the framework which schedules and reschedules the jobs and manages the resources on the basis of some performance monitoring data","PeriodicalId":196790,"journal":{"name":"2006 Fifth International Symposium on Parallel and Distributed Computing","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116034606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Java language first came to public attention in 1995. Within a year, it was being speculated that Java may be a good language for parallel and distributed computing. Its core features, including being objected oriented and platform independence, as well as having built-in network support and threads, has encouraged this view. Today, Java is being used in almost every type of computer-based system, ranging from sensor networks to high performance computing platforms, and from enterprise applications through to complex research-based simulations. In this paper the key features that make Java a good language for parallel and distributed computing are first discussed. Two Java-based middleware systems, namely MPJ Express, an MPI-like Java messaging system, and Tycho, a wide-area asynchronous messaging framework with an integrated virtual registry are then discussed. The paper concludes by highlighting the advantages of using Java as middleware to support distributed applications
{"title":"Parallel and Distributed Computing with Java","authors":"M. Baker, M. Grove, A. Shafi","doi":"10.1109/ISPDC.2006.38","DOIUrl":"https://doi.org/10.1109/ISPDC.2006.38","url":null,"abstract":"The Java language first came to public attention in 1995. Within a year, it was being speculated that Java may be a good language for parallel and distributed computing. Its core features, including being objected oriented and platform independence, as well as having built-in network support and threads, has encouraged this view. Today, Java is being used in almost every type of computer-based system, ranging from sensor networks to high performance computing platforms, and from enterprise applications through to complex research-based simulations. In this paper the key features that make Java a good language for parallel and distributed computing are first discussed. Two Java-based middleware systems, namely MPJ Express, an MPI-like Java messaging system, and Tycho, a wide-area asynchronous messaging framework with an integrated virtual registry are then discussed. The paper concludes by highlighting the advantages of using Java as middleware to support distributed applications","PeriodicalId":196790,"journal":{"name":"2006 Fifth International Symposium on Parallel and Distributed Computing","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133041066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cluster heterogeneity increases the difficulty of balancing the load across the system nodes. Although the relationship between heterogeneity and load balancing is difficult to describe analytically, in this paper an exhaustive analysis of the effects of this system feature on load balancing algorithms performance is presented. Considering the performed analysis, there are two main challenges that need to be faced when dealing with cluster heterogeneity in load balancing algorithms: one related to the state measurement stage and another to the initiation rule. In this paper techniques to deal with heterogeneity in these two algorithm stages are proposed. Furthermore, suggestions to improve the performance of the rest of algorithm stages in heterogeneous environments are made too
{"title":"Dealing with Heterogeneity in Load Balancing Algorithms","authors":"Marta Beltrán, A. Guzmán, J. L. Bosque","doi":"10.1109/ISPDC.2006.17","DOIUrl":"https://doi.org/10.1109/ISPDC.2006.17","url":null,"abstract":"Cluster heterogeneity increases the difficulty of balancing the load across the system nodes. Although the relationship between heterogeneity and load balancing is difficult to describe analytically, in this paper an exhaustive analysis of the effects of this system feature on load balancing algorithms performance is presented. Considering the performed analysis, there are two main challenges that need to be faced when dealing with cluster heterogeneity in load balancing algorithms: one related to the state measurement stage and another to the initiation rule. In this paper techniques to deal with heterogeneity in these two algorithm stages are proposed. Furthermore, suggestions to improve the performance of the rest of algorithm stages in heterogeneous environments are made too","PeriodicalId":196790,"journal":{"name":"2006 Fifth International Symposium on Parallel and Distributed Computing","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115751327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Ellahi, B. Hudzia, L. McDermott, Mohand Tahar Kechadi
Grid and P2P systems enable users to share resources across organization boundaries. A strong security system is an integral component of grid middleware to enable secure resource sharing at a very large scale. P2P grid systems combine approaches from both worlds to share resources at a very large scale. P2P grid systems have a different set of security requirements contrary to the traditional server based centralized grid systems. This paper proposes a decentralized security framework for P2P grid systems. This framework is part of a P2P based data grid middleware DGET (data grid environment and tools)
{"title":"Security Framework for P2P Based Grid Systems","authors":"T. Ellahi, B. Hudzia, L. McDermott, Mohand Tahar Kechadi","doi":"10.1109/ISPDC.2006.43","DOIUrl":"https://doi.org/10.1109/ISPDC.2006.43","url":null,"abstract":"Grid and P2P systems enable users to share resources across organization boundaries. A strong security system is an integral component of grid middleware to enable secure resource sharing at a very large scale. P2P grid systems combine approaches from both worlds to share resources at a very large scale. P2P grid systems have a different set of security requirements contrary to the traditional server based centralized grid systems. This paper proposes a decentralized security framework for P2P grid systems. This framework is part of a P2P based data grid middleware DGET (data grid environment and tools)","PeriodicalId":196790,"journal":{"name":"2006 Fifth International Symposium on Parallel and Distributed Computing","volume":"17 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114052265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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