Dr
Berzano Dario
(Sezione di Torino (INFN)-Universita e INFN)
05/09/2011, 14:00
Track 1: Computing Technology for Physics Research
Parallel talk
The conversion of existing computing centres to cloud facilities is becoming popular also because of a more optimal usage of existing resources. Inside a medium to large cloud facility, many specific virtual computing facilities might concur for the same resources based on their usage and destination elastically, i.e. by expanding or reducing allocated resources for currently running VMs, or...
Andrew Malone Melo
(Vanderbilt University)
05/09/2011, 14:25
Track 1: Computing Technology for Physics Research
Parallel talk
As cloud middleware (and cloud providers) have become more robust, various experiments with experience in Grid submission have begun to investigate the possibility of taking previously Grid-Enabled applications and making them compatible with Cloud Computing, which will allow for dynamic scaling of the available hardware resources on a dynamic basis, providing access to peak-load handling...
Dr
Graeme Andrew Stewart
(CERN)
05/09/2011, 14:50
Track 1: Computing Technology for Physics Research
Parallel talk
ATLAS has recorded almost 5PB of RAW data since the LHC started
running at the end of 2009. Many more derived data products and
complimentary simulation data have also been produced by the
collaboration and, in total, 55PB is currently stored in the Worldwide
LHC Computing Grid by ATLAS. All of this data is managed by the ATLAS
Distributed Data Management system, called Don Quixote 2...
Mr
Michal Zerola
(Academy of Sciences, Czech Republic)
05/09/2011, 15:15
Track 1: Computing Technology for Physics Research
Parallel talk
The massive data processing in a multi-collaboration environment with geographically spread diverse facilities will be hardly "fair" to users and hardly using network bandwidth efficiently unless we address and deal with planning and reasoning related to data movement and placement. The needs for coordinated data resource sharing and efficient plans solving the data transfer paradigm in a...
Mr
Andreas Joachim Peters
(CERN)
05/09/2011, 16:05
Track 1: Computing Technology for Physics Research
Parallel talk
EOS was designed to fulfill generic requirements on disk storage scalability and IO scheduling performance for LHC analysis use cases following the strategy to decouple disk and tape storage as individual storage systems.
The project was setup in April 2010. Since October 2010 EOS was evaluated by ATLAS as a disk only storage pool at CERN for analysis use cases in the context of various...
Mr
Luca Magnoni
(Conseil Europeen Recherche Nucl. (CERN))
05/09/2011, 16:30
Track 1: Computing Technology for Physics Research
Parallel talk
The Trigger and Data Acquisition (TDAQ) system of the ATLAS experiment at CERN is the infrastructure responsible for filtering and transferring ATLAS experimental data from detectors to the mass storage system. It relies on a large, distributed computing environment, including thousands of computing nodes with thousands of application running concurrently.
In such a complex environment,...
Dr
Tim dos Santos
(Bergische Universitaet Wuppertal)
05/09/2011, 16:55
Track 1: Computing Technology for Physics Research
Parallel talk
With the Job Execution Monitor, a user-centric job monitoring software developed at the University of Wuppertal and integrated into the Pilot-based "PanDA" job brokerage system of the WLCG, job progress and grid worker node health can be supervised in real time. Imminent error conditions can thusly be detected early by the submitter and countermeasures taken. Grid site admins can access...
Emanuel Alexandre Strauss
(SLAC National Accelerator Laboratory)
05/09/2011, 17:20
Track 1: Computing Technology for Physics Research
Parallel talk
We present an online measurement of the LHC beam parameters in ATLAS using the High Level Trigger (HLT). When a significant change is detected in the measured beamspot, it is distributed to the HLT. There, trigger algorithms like b-tagging which calculate impact parameters or decay lengths benefit from a precise,up-to-date set of beamspot parameters. Additionally, online feedback is sent to...
