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One of the challenges in designing large distributed systems is to optimize the communication and dependencies between modules, where a trade-off between performance and ressource usage often must be made. This paper suggest a simple taxonomy for comparing potential designs, and provides also an algorithm for automatically suggesting good candidates. The algorithm is compared to previous work, where...
The distributed hash tables (DHTs) exhibit several interesting properties, such as self-configuration, self-maintenance, scalability and robustness that are clearly desirable for many kinds of applications in the Internet. However, Most of DHT approaches have high resolution latency because each lookup need contact several servers in sequence, typically O(log n) hops (n is the number of peers in the...
Distributed Virtual Environments like online games or 3D virtual worlds have become very popular in the last few years and a more substantial surge in popularity and use is expected. Because of the huge number of users, such environments will undergo a change of infrastructure from a centralized to a decentralized one, making higher demands on consistency issues. This paper addresses consistency problems...
According to the new features of traffic distribution, a novel forwarding migration algorithm (FMA) is proposed. Programmable routers (PR) are used in FMA. One PR sets FMA bit for unbalanced traffic. Another PR forwards related traffic to the FMA link rather than to wait for matching the longest address prefix. Theoretic analysis shows that FMA can reduce the forwarding burden of core router. Simulation...
The future Internet would benefit from the delivery of high performance services crossing several carriers and bringing new incomes to telco operators. Such services compel carriers to guarantee quality of service (QoS) inside their boundaries. As carriers are independently administrated, architectures and processes must be reconsidered so that requirements for autonomy and confidentiality are respected...
Networked information systems have not been restricted to closed organizations environments for more than a decade. They are now crucial in supporting operations of infrastructure, ranging from power plants to air-control systems. These networked information systems, essentially forming the current Internet, are thus highly sensitive kinds of infrastructure where security plays a central role. However,...
In distributed virtual environments, e.g., online gaming, collaborative designs and distributed military simulations, interactivity is one of the most important requirements. The users may notice serious degradations in quality of service when interacting in the virtual world if the response from the system is much slower than what they have experienced in real life. In this paper, we consider the...
In distributed virtual environments (DVEs) the data on which the hosts operate is not consistent at all times. To restore data consistency, the DVE has to employ a consistency algorithm. Unfortunately, all existing DVEs have been built for specific application scenarios, which makes it impossible to compare the consistency algorithms and to choose a suitable candidate for a new scenario. To overcome...
Datasets of tens of gigabytes are becoming common in computational and experimental science. Providing remote visualization of these large datasets with adequate levels of quality and interactivity is an extremely challenging task, particularly for scientists who collaborate in widely distributed locations and their primary access to visualization resources is a desktop computer. This paper describes...
The next generation Internet will be highly diversified in both underlying networking technologies and supported networking applications. The diversified Internet architecture requires effective collaboration among heterogeneous network domains to support various application requirements. One of the challenges to achieve this objective lies in enabling network domain collaboration and network-application...
Virtual machines have emerged as an attractive approach for utility computing platforms because applications running on VMs are fault- and security- isolated from each other, yet can share physical machines. An important property of a virtualized utility computing platform is how quickly it can react to changing demand. We refer to the capability of a utility computing platform to quickly reassign...
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