The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Computational grids have the potential for solving large — scale and scientific problems using geographically distributed and heterogeneous resources. In addition to the challenges of managing and scheduling resources reliable challenges arise because the grid infrastructure is unreliable. There are two major problems in Scheduling the Grid 1) Efficient Scheduling of jobs 2) Providing fault tolerance...
Availability of grid resources is dynamic, which raises the need to develop robust and effective applications against changing circumstances. A major challenge in a distributed dynamic grid is fault tolerance. The more resources and components involved the more complicated and error-prone the system becomes. In a grid with potentially thousands of machines connected to each other, the reliability...
Performance models are used increasingly throughout the phases of the development and running of grid systems. However, as grid systems grow in size and complexity, building models that accurately capture the different aspects of their behavior becomes a more and more challenging task. As a matter of fact, it is more practical to study grid service performance than to study the whole grid. We present...
In grid computing, resource management and fault tolerance services are important issues. The availability of the selected resources for job execution is a primary factor that determines the computing performance. The failure occurrence of resources in the grid computing is higher than in a tradition parallel computing. Since the failure of resources affects job execution fatally, fault tolerance...
The management of the large scale heterogeneous resources is a critical issue in grid computing. The resource management system (RMS) is an essential component of grids. To ensure the QoS of the upper layer service, it raises high requirement for the performance, fault-tolerance and scalability of RMS. In this paper, we study three typical structures of RMS, including centralized, hierarchical and...
The following topics are dealt with: performance modelling; performance evaluation; routing mechanisms; broadcast mechanisms; distributed systems; parallel systems; service oriented architecture; trust management; agent computing; video communication technology; communication protocol; automatic network systems; advanced network systems; Internet computing; ad hoc networks; wireless sensor networks;...
In this paper, we have investigated the issues related to resource allocation, fault-tolerance and application scheduling in the context of computational grid economy, arises due to the autonomous nature of grid environment. Our proposed approach provides a novel solution for fault-tolerant resource allocation and task scheduling algorithm that executes userpsilas job in case of resource failure and...
Quality assurance is a key aspect in scope of the provisioning of grid services since end-users ask for specific quality of service (QoS) criteria defined in service level agreements (SLA). To commit to an SLA, grid providers need a risk analysis during SLA negotiation in order to estimate the probability of an SLA violation. In addition, such a risk analysis is necessary in the post-negotiation phase,...
The continuous increasing of computing power in electric system computing places a threshold to the single host use and suggests an approach based on distributed computing. An emerging solution is grid technology, which allows organization to make better use of existing computing resources by providing them with a single, transparent, aggregated source of computing power. New generation of grid infrastructure,...
Commercial Grid users demand for contractually fixed QoS levels. Service Level Agreements (SLAs) are powerful instruments for describing such contracts. SLA-aware resource management is the foundation for realizing SLA contracts within the Grid. Open CCS is such an SLA-aware RMS, using transparent checkpointing to cope with resource outages. It generates a compatibility profile for each checkpoint...
Grid technologies are emerging as the next generation of distributed computing, allowing the aggregation of resources that are geographically distributed across different locations. However, these resources are independent and managed separately by various organizations with different policies. This will have a major impact to users who submit their jobs to the Grid, as they have to deal with issues...
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...
The following topics are dealt with: heterogeneous scheduling; stabilization algorithms; availability and security; MPI & shared memory; scheduling and resource management; parallel and distributed algorithms; Web performance; data dissemination in sensor networks; QoS in interconnection networks; streaming; sensor network deployment; power-aware protocols; grids; multiprocessor scheduling; multicore...
Network transmissions in high performance networking scenarios, e.g., used for e-science or grid applications, require quality-of-service guarantees concerning bandwidth availability, but also timing constraints, e.g., deadlines, must be met. Current research efforts concentrate on supporting such environments with SLA-aware advance reservation management systems. Hence, the robustness of the management...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.