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The following topics are dealt with: parallel and distributed processing; middleware; mobile network; smart services; intelligent computing; multimedia; embedded systems; resource and data management and scheduling; parallel and distributed system architecture; cyberspace safety and security; ubiquitous processing; grid computing; vehicular ad hoc network; wireless sensor networks and human-computer...
Current virtual server-based load balancing schemes for DHT have been shown to be able to achieve excellent load balancing effectiveness. However, they face two important issues. They suffer from problems of incurring extremely high overheads, and inducing severe inconsistency in DHT routing state. We present two fundamental components, virtual server management and active stabilization, whose inclusion...
Parallel transactional systems are systems that execute transaction tasks in multiple servers, with load-balancing. We consider time constraints on those tasks and the fact that the tasks run in milliseconds means that fast admission control should be used. We propose such an admission control approach. Although there are scheduler designs building and maintaining complete deadline feasible schedules...
Application server clusters are often used to service high-throughput web applications. In order to host more than a single application, an organisation will usually procure a separate cluster for each application. Over time the utilisation of the clusters will vary, leading to variation in the response times experienced by users of the applications. Techniques that statically assign servers to each...
To ensure large-scale and long-time (LSLT) applications to run smoothly in a dynamic and heterogeneous grid environment, we have designed and implemented a WSRF-based framework with which users can reserve resources and request on-demand computing resources. The framework can be architecturely divided into three tiers: the tier providing client-side reservation and allocation APIs, the tier for reservation...
In Grid Computing, harnessing the power of idle resources in a distributed environment is one of the important features. However, to fully benefit from this computing model, an appropriated resource allocation method needs to be carefully chosen and deployed. A number of studies have been done on this area and one of the promising approaches is to adopt a marketing scheme called the auction model,...
Many modern applications require high-performance platforms to deal with a variety of algorithms requiring massive calculations. Moreover, low-cost powerful hardware (e.g., GPU, PPU) and CPUs with multiple cores have become abundant, and can be combined in heterogeneous architectures. To cope with this, reconfigurable computing is a potential paradigm as it can provide flexibility to explore the computational...
Spin-lock is commonly used for process serialization, where it works well for multi processor systems. Under some conditions however, it may cause an unexpected increase of CPU overhead. To address this problem a simulator has been developed which evaluates various algorithms of the lock/unlock process to determine a method to minimize their affect on the stability and scalability of a system. This...
The comparison of protein tertiary structures is a key milestone in many structural bioinformatics activities that rely in comparing very large structure datasets. As the number of proteins in the dataset increases, the corresponding computational time taken by the protein structure comparison algorithms also increases, squarely for an all-against-all comparison and linearly for an all-against-target...
Recently, the focus of sensor network paradigm is changing for delivering multimedia contents such as audio and video streams and still images. However, most existing routing protocols are not very practical for transmitting multimedia contents in resource constrained sensor networks. In this paper, we propose an optimized nod-disjoint multi-path routing scheme resulting in throughput enhancement...
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