A Decentralized Deployment Strategy and Performance Evaluation of LCG File Catalog Service

Abstract

The LHC Computing Grid (LCG) leads by CERN, has solved with the LCG File Catalog (LFC) the major problem of scaling the data management catalog. However, additional performance issues should be faced to deploy a painless catalog service. With this aim, we present a decentralized LFC server configuration, and its performance evaluation compared with the traditional LFC deployment. A performance analysis is shown, including not only the catalog server, but also analysing the client side overhead. We find that the LFC service has in the clients a relevant workload of the overall service. The experimental results show that the proposed LFC deployment for servers and clients, improves the performance of the service.

VizLitG: Grid Visualization e-Service Enabling Partial Dataset Transfer from Storage Elements of gLite-based Grid Infrastructure

“…Grid infrastructures provide the required means allowing us to efficiently share the resources in huge distributed environments. LCG Storage Element (SE) [46] used by the gLite middleware provides a uniform access to data storage resources, while supporting different data access protocols and interfaces. The AMGA metadata catalogue [36] can provide access to metadata for files stored in the SE.…”

“…The MIME multipart mechanism for binary SOAP attachments [54] was employed for sending binary data between the developed services. LFC (Logical File Catalog) system [46] is The developed GUI allows automatic data management and interactive dataset selection. A simple tabular design of GUI is programmed by using Java Swing [59].…”