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.
Getting consistent results when monitoring phenomena is a challenging but critical task for solar powered wireless high power embedded systems. Our algorithm relies on an energy predictor to achieve uniform monitoring over time while maximizing the number of tasks executed. Our approach outperforms state of the art algorithms by increasing the number of daily measurement by 30% and reducing their...
Workflows built through service composition bring new challenges, making the scheduling task even more complex. Besides that, scheduling researchers need a wide range of workflows and their respective services to validate new achievements. In this paper we present a service oriented testbed where experiments can be conducted to develop and evaluate algorithms, heuristics, and scheduling policies for...
This article designs a cooperative mission management system (CMMS) architecture for a multi-agent team using the integrated method, which units the control center subsystem for the team mission assignment and the onboard management subsystem for the sole autonomous management in an effective way. The proposed “distributed architecture under the distributed center-control” distributes the control...
In order to maximize the lifetime of wireless sensor networks, while ensuring the monitoring quality for specific applications, we develop the sleep-wakeup algorithms for the sensor networks. Firstly, for the three-dimensional wireless sensor networks, we formulate the virtual barrier coverage problems. Secondly, the design and implementation of the nodes sleep-wakeup scheduling algorithm, FWP, to...
Commercial cloud offerings, such as Amazon's EC2, let users allocate compute resources on demand, charging based on reserved time intervals. While this gives great¿exibility to elastic applications, users lack guidance for choosing between multiple offerings, in order to complete their computations within given budget constraints. In this work, we present BaTS, our budget-constrained scheduler. BaTS...
This paper presents analysis, design and implementation of Multi Agnet framework for user centric interactive Job management system. A reliable approach is adopted by analyzing this system using formal methods. Formal methods allow a software engineer to create a specification that is more complete, consistent, and unambiguous. Most of the grid middleware supports for batch processing of jobs which...
Network control and management techniques (e.g., dynamic path switching, on-demand bandwidth provisioning) rely on active measurements of end-to-end network status. These measurements are needed to meet network monitoring objectives such as: (a) intra-domain/inter-domain paths statuschecking, (b) network weather forecasting, (c) anomaly event detection and (d) fault-diagnosis. In this paper, we present...
In a real-time data warehouses, ETL is no longer executed periodically during the idle time of data warehouses, but continuously ongoing. Thus the triggering of ETL task, and In a real-time data warehouses, ETL is no longer executed periodically during the idle time of data warehouses, but continuously ongoing. Thus the triggering of ETL task, and the scheduling of updates and queries become the key...
Considering the disadvantages of traditional Scheduling algorithm and the characteristics of Grid Service, a Service Grid Scheduling algorithm based on the loading constraint has been designed and implemented. Firstly, a calculation algorithm based on each join points' loading has been proposed, providing the Formula of algorithm. Secondly, a comprehensive service distribution algorithm has been designed...
Complicated method and technology have been introduced into business workflow to solve their cooperation and load balancing. However, as combination of data management and flow management, scientific workflow's load balancing is less researched. So the phenomena of conflicting scheduling and load unbalance often occur. In this paper, we analyze functional framework and load consumption of scientific...
It is the purpose of this paper to discuss briefly the need for time-sharing, some of the implementation problems related to distributed systems resource management, an experimental time-sharing system which has been developed for the Master Token Resource Management System, and finally a scheduling algorithm, to schedule the resource for use. It gives a fair use of resources amongst the competitors...
This paper proposes a scheduler combining the concepts of EDF and pfairness using the worst fit heuristic function. In scheduling algorithms without pfairness, priority is not monitored closely in case of preemptions. An algorithm combining EDF and pfairness proposed in this paper overcomes this drawback. Here resources are granted in accordance to the task weight. Individually using either EDF or...
Implementing efficient dynamic scheduling algorithms is a real challenge but a well designed algorithm can bring a significant performance improvement, regardless of unexpected events that may occur during execution. What is more, analyzing an application's needs and ensuring the most appropriate course of action in case of a delay or failure is bound to offer the best performance for the application...
As a mainstream technology in the B3G TDD systems, TD-HSDPA (LCR TDD HSDPA, High-Speed Downlink Packet Access of Low Chip Rate TDD) adopts some key techniques to achieve high system throughput and high peak data rate, such as AMC (Adaptive Modulation and Coding) and HARQ (Hybrid Automatic Repeat reQuest). However, feedback delay is inevitable in practical TD-HSDPA systems due to the conventional scheduling...
Environment monitoring is an important class of wireless sensor networks applications. A traditional way for such applications is to deploy sensors all over a region and always aim to cover as more area as possible. However, this way is not only a great waste of money and recourses but also unnecessary and unrealistic. It also invokes many data collisions and brings serious burden to the network protocols...
We describe our experiences from implementing and integrating a new job scheduling algorithm in the gLite Grid middleware and present experimental results that compare it to the existing gLite scheduling algorithms. It is the first time that gLite scheduling algorithms are put under test and compared with a new algorithm under the same conditions. We describe the problems that were encountered and...
We propose information aggregation as a method for summarizing the resource-related information, used by the task scheduler. Through this method the information of a set of resources can be uniformly represented, reducing at the same time the amount of information transferred in a Grid network. A number of techniques are described for aggregating the information of the resources belonging to a hierarchical...
Many stream-based applications have real-time performance requirements for continuous queries over time varying data streams. In order to address this challenge, a real-time continuous query model is presented to process multiple queries with timing constraints. In this model, the execution of one tuple passing through an operator path is modeled as a real-time task instance. A fine-grained scheduling...
The execution of course program and timetables in distance learning systems is more strict in military school, it imposes necessity for teachers to guarantee the progress of students according with a set of course program by monitoring the studentspsila behaviors and giving the alert when the predefined schedules are violated in such an e-learning situation. An active monitor system is designed to...
This paper designs a grid resource management model oriented information service and achieves the functions of the various components. The author presents an improved ldquodividedrdquo algorithm based on the traditional, classical min-min scheduling algorithm, and then simulates the algorithm by grid simulator GridSim. Comparing with the traditional Min-Min algorithm, this improved one overcomes the...
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.