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The Grid2003 Project has deployed a multi-virtual organization, application-driven grid laboratory (" Grid3 ") that has sustained for several months the production-level services required by physics experiments of the Large Hadron Collider at CERN (ATLAS and CMS), the Sloan Digital Sky Survey project, the gravitational wave search experiment LIGO, the BTeV(More)
The MonALISA (Monitoring Agents in A Large Integrated Services Architecture) system provides a distributed monitoring service. MonALISA is based on a scalable Dynamic Distributed Services Architecture which is designed to meet the needs of physics collaborations for monitoring global Grid systems, and is implemented using JINI/JAVA and WSDL/SOAP(More)
The next generation of High Energy Physics experiments have envisaged the use of network-distributed Petabyte-scale data handling and computing systems of unprecedented complexity. The general concept is that of a "Data Grid Hierarchy" in which the central facility at the European Laboratory for Particle Physics (CERN) in Geneva will interact and coherently(More)
Large scientific collaborations are moving towards service oriented architectures for implementation and deployment of globally distributed systems. Clarens is a high performance, easy to deploy Web Service framework that supports the construction of such globally distributed systems. This paper discusses some of the core functionality of Clarens that the(More)
  • D Adamczyk, G Denis, J Fernandes-P, P Farkas, D Galvez, Lattka +3 others
  • 2004
The aim of this paper is to introduce and describe worldwide used videoconferencing and collaboration system called "Virtual Rooms Videoconferencing System" (VRVS). VRVS is being developed by Caltech (California Institute of Technology) in order to provide a low cost, bandwidth-efficient, extensible means for videoconferencing and remote collaboration over(More)
This paper discusses the latest generation of the MONARC (MOdels of Networked Analysis at Regional Centers) simulation framework, as a design and modeling tool for large scale distributed systems applied to HEP experiments. The simulation of Grid architectures has a vital importance in the future deployment of Grid systems for providing the users an(More)
  • J Andreeva, A Anjum, T Barrass, D Bonacorsi, J Bunn, P Capiluppi +41 others
  • 2005
—The CMS experiment is currently developing a computing system capable of serving, processing and archiving the large number of events that will be generated when the CMS detector starts taking data. During 2004 CMS undertook a large scale data challenge to demonstrate the ability of the CMS computing system to cope with a sustained data-taking rate(More)
  • M Dam, R Dippel, S Erhan, A Gellrich, J D Hansen, J R Hansen +16 others
  • 1997
The HERA-B experiment[1, 2] is designed for observation of CP violation in the B-meson system at the HERA machine in DESY. The data acquisition and triggering system must cope with a half million detector channels, a 40 MHz interaction rate and a signal to background ratio of 10 ?10. A highly selective multi-level trigger and high bandwidth data acquisition(More)
Grid computing has gained an increasing importance in the last years, especially in the academic environments, offering the possibility to rapidly solve complex scientific problems. The monitoring of the Grid jobs has a vital importance for analyzing the system's performance, for providing the users an appropriate feedback , and for obtaining historical(More)