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4th EGEE User Forum/OGF 25 and OGF Europe's 2nd International Event

2โ€“6 Mar 2009
Le Ciminiere, Catania, Sicily, Italy
Europe/Rome timezone

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Session

High Energy Physics

4 Mar 2009, 11:00
Le Ciminiere, Catania, Sicily, Italy

Le Ciminiere, Catania, Sicily, Italy

Viale Africa 95100 Catania

Description

The High-Energy Physics (HEP) community is one of the pilot application domains in EGEE, and is the largest user of its grid infrastructure. By their nature HEP applications are very demanding and due to this fact these applications serve as a powerful role in understanding and improving EGEE delivered services. The HEP experiments also produce high-level middleware components than often become valuable prototypes for the overall grid community. The expertise developed by HEP users is open to the other EGEE grid users. This kind of applications are an important driving force within the EGEE project and promotes progress across many scientific disciplines.
The four Large Hadron Collider (LHC) experiments (ALICE, ATLAS, CMS and LHCb) at CERN will begin to record proton-proton events this year. The EGEE infrastructure will play a key role in the data processing and analysis of the 4 LHC experiment.

The EGEE User Forums have been always a big opportunity to share the experiences between Grid users and also to trigger important collaboration between different clusters. The first session on Wednesday morning is devoted to the largest LHC experiments: ATLAS and CMS. Different talks will expose the status of the analysis frameworks, the sites and the monitoring tools of these experiments. Due to the importance of 2009 for the LHC, these talks will expose the current status of the largest experiments and their sites before the real data taking. This will be an ideal opportunity to share experiences with other communities which can see the results of the preparation phase of the LHC using the EGEE infrastructure. The second session will continue with another CMS contribution dedicated to the data analysis framework of the experiment. This second session will also include some fundamental examples of how the HEP cluster has contributed to other research fields with the toolkits created originally for this community but also extended to other applications within the EGEE framework.

Presentation materials

  1. 90. World-wide daily computing operations in ATLAS
    Mrs Schovancova Jaroslava (Institute of Physics, ASCR v.v.i. and CESNET)
    04/03/2009, 11:00
    Scientific results obtained using grid technology
    Oral
    The ATLAS distributed computing activities involve about 200 computing centers distributed world wide and need people on shift covering 24 hours per day: data distribution, simulated event production, reprocessing and user analysis run continuously. In this paper we present the operations model followed by the ATLAS daily operations team, describe the main problems found (at the sites and...
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  2. 17. ATLAS Distributed Analysis tests in the Spanish Cloud
    Dr Santiago Gonzalez De La Hoz (IFIC-Valencia/CERN)
    04/03/2009, 11:20
    Scientific results obtained using grid technology
    Oral
    ATLAS distributed analysis challenges need to be performed in order to validate site and cloud readiness for the full-scale user load. Breaking points and bottlenecks which result from the site/cloud design or configuration need to be identified.For that test,we are using a real analysis code from physicists,the Ganga LCG/EGEE backend,using its data-based brokering and splitting and both Posix...
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  3. 137. Monitoring the ATLAS distributed production
    Benjamin Gaidioz (CERN)
    04/03/2009, 11:40
    End-user environments and portal technologies
    Oral
    The importance of efficient monitoring tools for LHC experiments is emphasized by the fact that LHC will soon produce real data. We present the monitoring system of the ATLAS (CERN LHC experiment) distributed productionsystem. Collecting information in near real-time about the performance of each job execution, it shows to people on shift specific displays permitting them to quickly identify...
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  4. 71. The commissioning of CMS computing centres in the WLCG Grid
    Dr Josep Flix Molina (CIEMAT)
    04/03/2009, 12:00
    Scientific results obtained using grid technology
    Oral
    The computing system of the CMS experiment works using distributed resources from EGEE, OSG and NorduGrid sites. The operation of the system requires a stable and reliable behaviour of the underlying infrastructure. This contribution describes in detail the procedure to test all relevant aspects of a Grid site and the capability to sustain the various CMS computing activities.
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