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The Online Histogram Presenter for the ATLAS experiment: A modular system for histogram visualization

Abstract

The Online Histogram Presenter (OHP) is the ATLAS tool to display histograms produced by the online monitoring system. In spite of the name, the Online Histogram Presenter is much more than just a histogram display. To cope with the large amount of data, the application has been designed to minimise the network traffic; sophisticated caching, hashing and filtering algorithms reduce memory and CPU usage. The system uses Qt and ROOT for histogram visualisation and manipulation. In addition, histogram visualisation can be extensively customised through configuration files. Finally, its very modular architecture features a lightweight plug-in system, allowing extensions to accommodate specific user needs. After an architectural overview of the application, the paper is going to present in detail the solutions adopted to increase the performance and a description of the plug-in system.
Authors:
Dotti, Andrea; [1]  Adragna, Paolo; [2]  Vitillo, Roberto A, E-mail: andrea.dotti@cern.c [3] 
  1. CERN, CH-1211 Genve 23 Switzerland (Switzerland)
  2. Physics Department, Queen Mary, University of London Mile End Road London E1 4RP UK (United Kingdom)
  3. INFN Sezione di Pisa, Ed. C Largo Bruno Pontecorvo 3, 56127 Pisa (Italy)
Publication Date:
Apr 01, 2010
Product Type:
Journal Article
Resource Relation:
Journal Name: Journal of Physics. Conference Series (Online); Journal Volume: 219; Journal Issue: 3; Conference: CHEP09: 17. international conference on computing in high energy and nuclear physics, Prague (Czech Republic), 21-27 Mar 2009; Other Information: DOI: 10.1088/1742-6596/219/3/032037
Subject:
97 MATHEMATICAL METHODS AND COMPUTING; ALGORITHMS; COMPUTER CODES; CONFIGURATION; DIAGRAMS; MATHEMATICAL SOLUTIONS; MONITORING; SIMULATION; INFORMATION; MATHEMATICAL LOGIC
OSTI ID:
21445780
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1742-6596; TRN: GB10I0877040575
Availability:
Available from http://dx.doi.org/10.1088/1742-6596/219/3/032037
Submitting Site:
GBN
Size:
8 pages
Announcement Date:
Jul 07, 2011

Citation Formats

Dotti, Andrea, Adragna, Paolo, and Vitillo, Roberto A, E-mail: andrea.dotti@cern.c. The Online Histogram Presenter for the ATLAS experiment: A modular system for histogram visualization. United Kingdom: N. p., 2010. Web. doi:10.1088/1742-6596/219/3/032037.
Dotti, Andrea, Adragna, Paolo, & Vitillo, Roberto A, E-mail: andrea.dotti@cern.c. The Online Histogram Presenter for the ATLAS experiment: A modular system for histogram visualization. United Kingdom. doi:10.1088/1742-6596/219/3/032037.
Dotti, Andrea, Adragna, Paolo, and Vitillo, Roberto A, E-mail: andrea.dotti@cern.c. 2010. "The Online Histogram Presenter for the ATLAS experiment: A modular system for histogram visualization." United Kingdom. doi:10.1088/1742-6596/219/3/032037. https://www.osti.gov/servlets/purl/10.1088/1742-6596/219/3/032037.
@misc{etde_21445780,
title = {The Online Histogram Presenter for the ATLAS experiment: A modular system for histogram visualization}
author = {Dotti, Andrea, Adragna, Paolo, and Vitillo, Roberto A, E-mail: andrea.dotti@cern.c}
abstractNote = {The Online Histogram Presenter (OHP) is the ATLAS tool to display histograms produced by the online monitoring system. In spite of the name, the Online Histogram Presenter is much more than just a histogram display. To cope with the large amount of data, the application has been designed to minimise the network traffic; sophisticated caching, hashing and filtering algorithms reduce memory and CPU usage. The system uses Qt and ROOT for histogram visualisation and manipulation. In addition, histogram visualisation can be extensively customised through configuration files. Finally, its very modular architecture features a lightweight plug-in system, allowing extensions to accommodate specific user needs. After an architectural overview of the application, the paper is going to present in detail the solutions adopted to increase the performance and a description of the plug-in system.}
doi = {10.1088/1742-6596/219/3/032037}
journal = {Journal of Physics. Conference Series (Online)}
issue = {3}
volume = {219}
place = {United Kingdom}
year = {2010}
month = {Apr}
}