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JRA1 Contribution to CHEP07

3–7 Sept 2007
Victoria (Canada)
Europe/Zurich timezone

Contribution List

10 / 10
0. Building a robust distributed system: some lessons from R-GMA
03/09/2007, 08:00
[Oral] R-GMA, as deployed by LCG, is a large distributed system. We are currently addressing some design issues to make it highly reliable, and fault tolerant. In validating the new design, there were two classes of problems to consider: one related to the flow of data and the other to the loss of control messages. R-GMA streams data from one place to another; there is a need to...
9. Experimental Evaluation of Job Provenance in ATLAS environment
03/09/2007, 08:00
[poster] Grid middleware stacks, including gLite, matured into the state of being able to process upto millions of jobs per day. Logging and Bookkeeping, the gLite job-tracking service keeps pace with this rate, however it is not designed to provide a long-term archive of executed jobs. ATLAS---representative of large user community--- addresses this issue with its own job catalogue...
1. Job Submission and Management Through Web Services: the Experience with the CREAM Service
Mr Luigi Zangrando (INFN Padova)
03/09/2007, 08:00
[Oral presentation] Modern GRID middlewares are built around components providing basic functionality, such as data storage, authentication and security, job management, resource monitoring and reservation. In this paper we describe the Computing Resource Execution and Management (CREAM) service. CREAM provides a Web service-based job execution and management capability for Grid systems;...
2. Tools for the management of stored data and transfer of data: DPM and FTS
David Smith (CERN)
03/09/2007, 08:00
[presentation] As a part of the EGEE project the data management group at CERN has developed and support a number of tools for various aspects of data management: A file catalog (LFC), a key store for encryption keys (Hydra), a grid file access library (GFAL) which transparently uses various byte access protocols to access data in various storage systems, a set of utilities ...
3. File Transfer Service
Gavin McCance (CERN)
03/09/2007, 08:20
[paper] A key feature of WLCG's multi-tier model is a robust and reliable file transfer service that efficiently moves bulk data sets between the various tiers, corresponding to the different stages of production and user analysis. We describe in detail the WLCG transfer service, both the tier-0 data export and the inter-tier data transfers, discussing the transition...
8. The gLite Workload Management System
03/09/2007, 08:20
The gLite Workload Management System (WMS) is a collection of components providing a service responsible for the distribution and management of tasks across resources available on a Grid. The main purpose is to accept a request of execution of a job from a client, find appropriate resources to satisfy it and follow it until completion. Different aspects of job management are accomplished by...
4. DPM Status and Next Steps
Lana Abadie (CERN)
03/09/2007, 08:40
[paper/poster] The DPM (Disk Pool Manager) provides a lightweight and scalable managed disk storage system. In this paper, we describe the new features of the DPM. It is integrated in the grid middleware and is compatible with both VOMS and grid proxies. Besides the primary/secondary groups (or roles), the DPM supports ACLs adding more flexibility in setting file...
5. Recent Developments in LFC
Lana Abadie (CERN)
03/09/2007, 09:00
[paper/poster] The LFC (LCG File Catalogue) allows retrieving and registering the location of physical replicas in the grid infrastructure given a LFN (Logical File Name) or a GUID (Grid Unique Identifier). Authentication is based on GSI (Grid Security Infrastructure) and authorization uses also VOMS. The catalogue has been installed in more than 100 sites. It is essential to...
6. GFAL and LCG-Util
Remi Mollon (CERN)
03/09/2007, 09:20
[paper/poster] GFAL, or Grid File Access Library, is a C library developed by LCG to give a uniform POSIX interface to local and remote Storage Elements on the Grid. LCG-Util is a set of tools to copy/replicate/delete files and register them in a Grid File Catalog. In order to match experiment requirements, these two components had to evolve. Thus, the...
7. Medical Data Management Status and Plans
Akos Frohner (CERN)
03/09/2007, 09:40
[paper/poster] The goal of the Medical Data Management (MDM) task is to provide secure (encrypted and under access control) access to medical images, which are stored at hospitals in DICOM servers or are replicated to standard grid Storage Elements (SE) elsewhere. In gLite 3.0 there are three major components to satisfy the requirements: The dCache/DICOM SE is a...

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