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In Volunteer Computing resources are provided by the own users, instead of by a single institution. One of its drawbacks is the unreliability of the provided resources, so their selection becomes a main point. In this paper we deal with the suitable selection of resources considering this kind of Volunteer Computing system. As the resources choice may be needed in a reduced amount of time, we cannot...
The future of Moore's Law is in jeopardy. The number of cores of many-core systems is steadily increasing for every technology node generation. Voltage scaling does not keep pace with the unabated decrease of transistor size. Higher leakage power and manufacturing variabilities are the consequences and lead to extremely critical power as well as thermal issues. These phenomena can downgrade the performance...
Services involving cloud computing are advertised by the providers such that they are available all the time; but many of the recent past events have shown how a single or a bunch of component seizures can lead to a system failure affecting the business continuity of consumers. Though reliability of a cloud system depends heavily on the capability of the participating components as a whole, but there...
Modern computing systems are dealing with a diverse set of complex and dynamic workloads in the presence of varying job arrival rates. This diversity is raising the need for the development of sophisticated run-time mechanisms that efficiently manage system's resources. In addition, moving towards kilo-core processor architectures, centralized resource management approaches will most probably form...
With the rapid development of the cloud computing and big data, many data center network are growing more large scale, and the number of servers is increasing at an exponential rate. In this paper, VCG (Vickrey-Clarke-Groves) mechanism was introduced into replica placement. Mapping from replica placement model to VCG mechanism was established and suitable payment function was designed. Data storage...
Transistor miniaturization, combined with the dawn of novel switching semiconductor structures, calls for careful examination of the variability and aging of the computer fabric. Time-zero and time-dependent phenomena need to be carefully considered so that the dependability of digital systems can be guaranteed. Already, architectures contain many mechanisms that detect and correct physically induced...
The paper considers the resource management system (RMS) in grid computing systems. In grid computing systems, the RMS should adopt the optimal task allocation to maximize the service provider's profit, which equals the difference between service price and service cost. Because of possible external attacks, the system should adopt self-defense to ensure the quality of service. However, the use of...
Failure occurrence and its impact on system performance have become an increasingly important concern in cloud computing. Most techniques in today's system are reactive schemes to recover after failure which could lead to major cost and significantly affect system performance. Instead, we propose a proactive failure aware virtual machine infrastructure for cloud computing. Our approach takes both...
The sensitivity assessment method has been invented to increase he accuracy and easiness in reliability allocation based on the military standards and extant experiences. In usual allocation method complexity, technology, environmental conditions and life time are defined as influential parameters for a system reliability calculating. So, with the assessment of these factors for each product, quantity...
In this paper a BISR architecture for embedded memories is presented. The proposed scheme utilises a multiple bank cache-like memory for repairs. Statistical analysis is used for minimisation of the total resources required to achieve a very high fault coverage. Simulation results show that the proposed BISR scheme is characterised by high efficiency and low area overhead, even for high defect densities...
This is an introduction to the proceedings of the MWS 2007 workshop held at EDOC 2007. It first explains the motivation for and background of the workshop. Then, it contains a short description of the keynote, each long and short peer-reviewed paper, and the discussion session "impact of various execution environments on middleware for web services". After the closing statements, MWS 2007...
In order to accomplish high performance on grid workflow, grid resource management system needs a smart and swift resource allocation middleware. In this paper, we study the economy driven resource allocation problem based on market model of grid resource management architectures. We model the problem as the multiple choice knapsack problem (MCKP) and design the resource allocation optimization algorithm...
We developed a quality of service (QoS) management system to support service level management (SLM) for global enterprise services. The QoS management system is integrated with one of our enterprise services in a preproduction system, an identical system as the production system but in a test environment. Lab experiments showed that our integrated solution helps global enterprise services to better...
As Grid networks grows, the complexity of resource management in Grid networks dramatically increases. To manage the Grid resources efficiently, policy based resource management system is suitable. However, the policy which made at a moment could not be appropriate to other time because the condition of the grid resources with time space changes. Thus, in this paper, we propose asynchronous policy-based...
Unequal error protection is the key to future transport of multimedia data. The paper presents an overview of some new approaches realizing UEP properties in physical transport, especially multicarrier modulation, or with LDPC and turbo codes. For multicarrier modulation, a UEP bit-loading method is described allowing for an arbitrary number of classes, arbitrary SNR margins between the classes and...
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