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The operation and maintenance of large distributed systems that are subject to high QoS conditions has led to the need of designing and developing advanced monitoring tools that facilitate the administration of the critical services required by the user communities. RASSMon is a portable, reliable, secure software platform able to collect monitoring data from multiple sources in heterogeneous environments...
Supporting three of the four main user communities of the Large Hadron Collider (LHC) at CERN, RO-07-NIPNE is the most complex grid site of the Romanian Tier-2 Federation (RO-LCG, http://lcg.nipne.ro). Here we present an overview of the recent hardware, software and network implementations at the grid site, in view of the computational support for the second run of the LHC. Special emphasis is placed...
During this summer, the new Operations Centre of the Romanian National Grid Infrastructure (NGI-RO) has been implemented at IFIN-HH, under the management of DFCTI and supported by the computing infrastructure of the GRIDIFIN site. The site, which was recently EGI certified, serves three research communities· the experimental groups of the Extreme Light Infrastructure — Nuclear Physics (ELI-NP) project,...
Trust has been recognized as important factor for Grid computing security. Trust is the degree of belief in the resource provider's competence to complete user's task dependably, securely and reliably in a specific context at a given time. In this paper, we propose the trust model in Grid system. It consists of Application Domain (AD), Client Domain (CD), Resource Domain (RD), and Trust Manager (TM)...
Many TCP protocol variants have demonstrated better performance in simulation and several limited network experiments. However, practical use in real applications of these protocols is still very limited because of the implementation and installation difficulties. On the other hand, users who need to transfer bulk data (e.g., ingrid/cloud computing) usually turn to application level solutions where...
The following topics are dealt with: mobile computing; wireless sensor networks; cloud computing; grid, computing; data center computing; cluster computing; energy-aware applications; virtualization; multicore computing; computer architecture; distributed computing; computer networks; network architecture; CPS security; CPS computing; social networking; Internet of things; WISARN I and embedded system...
The following topics are dealt with: digital content; digital life; e-learning; Web service; HCI; information security; mobile computing; wireless communication; vehicular technology; image processing; computer graphics; multimedia technologies; computer architecture; SoC; embedded systems; artificial intelligence; knowledge discovery; fuzzy systems; computer networks; Web technologies; biomedical...
In this work we propose two decomposition algorithms LR-SVNE and D-SVNE for solving the SVNE problem efficiently. We focus on the design of survivable VN embedding with resource constraints. The VN embedding problem with resource constraints is NP-hard, hence most work focuses on devising heuristic solutions. Simulation results show that our algorithms perform well in terms of both time complexity...
With the development of spatial information technology, remote sensing data processing has become a kind of important service to the public. Traditional processing mode with one single machine and one software can't meet the demand of various requirements and high performance processing though there exist various isolated remote sensing resources such as data, software over network. Grid is a infrastructure...
Graph cuts methods are at the core of many state-of-the-art algorithms in computer vision due to their efficiency in computing globally optimal solutions. In this paper, we solve the maximum flow/minimum cut problem in parallel by splitting the graph into multiple parts and hence, further increase the computational efficacy of graph cuts. Optimality of the solution is guaranteed by dual decomposition,...
Drawing on the idea of grid in computer networks, this paper maps heterogeneous wireless networks to distributed grids by introducing Resource Management Unit, and then presents a hierarchical semi-centralized architecture for load balancing of heterogeneous wireless networks. The analytical models for the signaling overhead of the architecture are established. Theoretical analysis and simulation...
The following topics are dealt with: mobility; quality of service; measure based and classification mechanism; clusters, grids, and distributed systems; processors and input/output systems; data security; multimedia communications; protocols; wireless networks; computer applications; real time systems; and voice over IP.
Decrease in hardware costs and advances in computer networking technologies have led to increased interest in the use of grid computing systems. One of the biggest issues in such systems is the development of effective techniques/algorithms for the distribution of the jobs/load of a grid application on multiple resources to achieve goals such as minimizing execution time, minimizing communication...
We describe Cybersar, a new computational infrastructure for research developed in Sardinia as a part of a program funded by the Italian Ministry of University and Research for a National Grid Computing Infrastructure. The aim of Cybersar is to support innovative computational applications by using leading edge hardware and technological solutions and to provide an experimental platform for research...
The following topics are dealt with: network computing; overlay networks; processor sharing; job allocation; resource selection; distributed dependable storage; trustworthy network computing; adaptive cloud; grid computing; network security; sensor networks; mobile ad hoc networks; virtualization; quality of service; mobile ad hoc networks; wireless networks; peer to peer networks; data transfer;...
When dynamic service interconnection requests are managed by a centralized system (e.g., a network management system - NMS), the time required for the connections to be fully operational might be heavily impacted by the policy utilized to serve them. The policies must be devised for mitigating issues that increase this time, such as commercial router irresponsiveness to configuration commands during...
The following topics are dealt with: networking and services; wireless networks; optical fibre networks; overlay networks; grid services; online and remote learning platforms.
Pervasive computing environment and the Grid infrastructure can be combined to make the computation and information Grid truly ubiquitous. As an emerging field, pervasive grid has not had the opportunity to develop a architecture model similar to the OSI reference model used to describe computer networks. Such a model would be useful in properly classifying design issues and providing needed context...
Cluster and grid computing are becoming very popular, particularly for scientific and engineering applications. Higher bandwidth of computer networks has further boosted development of cluster computing. Local and geographically dispersed deployment of computing resources is the most prominent differentiating issue between a cluster and grid computing based setups. Cluster necessarily requires deployment...
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