2002 - cesnet

11 DataGridSince 2001, our research plan includes also the work on the DataGrid internationalproject of the 5 th EU Framework Program. The objective of this project, inwhich more than 20 partners from most of the European countries led by CERNare engaged, is to create an extensive computing and data infrastructure. Thisinfrastructure will be utilized by scientists when evaluating experiments beingprepared using new devices in CERN. The experiments will produce severalPB or tens of PB of data per year. The infrastructure constructed within theDataGrid project must offer tools for storing, providing (including creation ofreplicas) and processing of these data – in a distributed form.CESNET is involved in the activities of the workpackage 1, which is responsiblefor the resource management. Besides, CESNET participates in ensuring of anoperating testbed (in collaboration with the Institute of Physics of the Academyof Sciences of the Czech Republic (Fyzikální ústav AV ČR)) and also in severalaspects of the network infrastructure. Within the workpackage 1 (which is anactivity directly financed by EU), CESNET is responsible for the logging andbookkeeping service and security mechanisms in use.11.1 Logging ServiceActivities of 2002 can be divided into the following three areas:• Maintenance and development of the so-called operating version 1.x• Development and gradual implementation of the new version 2.0• Logging service integration with R-GMA (Grid monitoring architecture)11.1.1 Operating Version 1.xAccording to the original project schedule, this service should have been maintainedonly in the first half of the year and gradually replaced, with version 2.0being prepared. However, at the end of the first half-year, the project managementdecided to continue in maintenance of version 1.x up to the secondproject evaluation (February 2003). On one hand, this decision allowed for asubstantially deeper implementation testing, but on the other hand, implementationof new features required by applications according to the original developmentplan became complicated – most of the required extensions cannot beintegrated into the conceptually obsolete version.High-speed National Research Network and its New Applications 2002141