apport de recherche

Anomaly detection and diagnosis in grid environments

crucial role in developing complex application workflows in Grid environments. Although our work is preliminary, CWG has already been used to map high energy physics applications onto the Grid. In one particular experiment, a set of production runs lasted 7 days and resulted in the generation of 167

environment is an autonomous human-machine environment evolving with science, technology, culture, and society. The Knowledge Grid environment is an advanced development of human- machine systems. It focuses not only on machine and network performance but also on knowledge development, sharing

An overview of research and development challenges for managing data in Grid environments is provided. We relate issues in data management at various levels of abstraction, from resources storing data sets, to metadata required to manage access to such data sets. A common set of services

, and because independent tasks may share common data files. In this paper, we propose an adaptive scheduling algorithm for parameter sweep applications on the Grid. We modify standard heuristics for task/host assignment in perfectly predictable environments (Max-min, Min-min, Sufferage), and we propose

Recent experience in deploying Grid middleware demonstrated the challenges one faces in delivering robust services in distributed and shared environments. Grid applications often must deliver reliable performance despite the use of distributed and shared resources. Although anomaly management

The VRM Visualizer is a GUI application. Our goal was implementing a working prototype to visualize the VRM grid environment as described in [1]. Therefore the Visualizer only visualizes the data- it is not a user interface to submit jobs or control the operation of the AIs. Prior to coding we

Grid Computing is a high performance computing environment that allows sharing of geographically distributed resources across multiple administrative domains and used to solve large scale computational demands. In the grid environment, users can access the resources transparently without knowing

Abstract. A pattern based approach for developing applications in a Grid computing environment is presented, and is based on the ability to manage components and their interactions. The approach provides a formal way of combining recurrent themes in Grid applications, and provides a set