CERN Accelerating science

ATLAS Note
Report number	hep-ex/0305096 ; CHEP-2003-THGT003 ; ATL-DAQ-2003-005
Title	Online Monitoring software framework in the ATLAS experiment
Related title	A TOROIDAL LHC APPARATUS LARGE HADRON COLLIDER
Author(s)	Barczyk, M. (CERN) ; Burckhart-Chromek, D. (CERN) ; Caprini, M. (CERN) ; Da Silva Conceicao, J. (CERN) ; Dobson, M. (CERN) ; Flammer, J. (CERN) ; Jones, R. (CERN) ; Kazarov, A. (CERN) ; Kolos, S. (CERN) ; Liko, D. (CERN) ; Lucio, L. (CERN) ; Mapelli, L. (CERN) ; Soloviev, I. (CERN) ; Hart, R. (NIKHEF, Amsterdam) ; Amorim, A. (Lisbon U., CFAUL) ; Klose, D. (Lisbon U., CFAUL) ; Lima, J. (Lisbon U., CFAUL) ; Pedro, L. (Lisbon U., CFAUL) ; Wolters, H. (Catolica Portuguesa U., Figueira da Foz) ; Badescu, E. (Bucharest, IFIN-HH) ; Alexandrov, I. (Dubna, JINR) ; Kotov, V. (Dubna, JINR) ; Mineev, M. (Dubna, JINR) ; Ryabov, Yu. (St. Petersburg, INP)
Publication	2003
Imprint	30 May 2003
Number of pages	6
Note	added file OnlMonSlides-CHEP03.ppt submitted on 2003-06-23 11:46:14
In:	eConf C0303241 (2003) pp.THGT003
In:	2003 Conference for Computing in High-Energy and Nuclear Physics, La Jolla, CA, USA, 24 - 28 Mar 2003, pp.THGT003
Subject category	Detectors and Experimental Techniques ; Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	ATLAS TDAQ ; Information Service ; Message Reporting ; monitoring
Abstract	A fast, efficient and comprehensive monitoring system is a vital part of any HEP experiment. This paper describes the software framework that will be used during ATLAS data taking to monitor the state of the data acquisition and the quality of physics data in the experiment. The framework has been implemented by the Online Software group of the ATLAS Trigger&Data Acquisition (TDAQ) project and has already been used for several years in the ATLAS test beams at CERN. The inter-process communication in the framework is implemented via CORBA, which provides portability between different operating systems and programming languages. This paper will describe the design and the most important aspects of the online monitoring framework implementation. It will also show some test results, which indicate the performance and scalability of the current implementation.
Copyright/License	Preprint: (License: CC-BY-4.0)

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