27 September 2004 to 1 October 2004
Interlaken, Switzerland
Europe/Zurich timezone

Experience with CORBA communication middleware in the ATLAS DAQ

28 Sep 2004, 10:00
Coffee (Interlaken, Switzerland)


Interlaken, Switzerland

Board: 15
poster Track 1 - Online Computing Poster Session 1


S. Kolos (CERN)


As modern High Energy Physics (HEP) experiments require more distributed computing power to fulfill their demands, the need for an efficient distributed online services for control, configuration and monitoring in such experiments becomes increasingly important. This paper describes the experience of using standard Common Object Request Broker Architecture (CORBA) middleware for providing a high performance and scalable software, which will be used for the online control, configuration and monitoring in the ATLAS Data Acquisition (DAQ) system. It also presents the experience, which was gained from using several CORBA implementations and replacing one CORBA broker with another. Finally the paper introduces results of the large scale tests, which have been done on the cluster of more then 300 nodes, demonstrating the performance and scalability of the ATLAS DAQ online services. These results show that the CORBA standard is truly appropriate for the highly efficient online distributed computing in the area of modern HEP experiments.

Primary authors

A. AMORIM (Universidade de Lisboa, Portugal) A. KAZAROV (Petersburg Nuclear Physics Institute (PNPI)) D. BURCKHART-CHROMEK (CERN, Geneva, Switzerland) D. KLOSE (Universidade de Lisboa, Portugal) D. Liko (CERN) E. BADESCU (National Institute of Physics and Nuclear Engineering, Bucharest, Romania) I. ALEXANDROV (JINR, Dubna, Russia) I. SOLOVIEV (Petersburg Nuclear Physics Institute, Gatchina, Russia) J. FLAMMER (CERN, Geneva, Switzerland) L. MAPELLI (CERN, Geneva, Switzerland) L. PEDRO (Universidade de Lisboa, Portugal) M. CAPRINI (National Institute of Physics and Nuclear Engineering, Bucharest, Romania) M. DOBSON (CERN, Geneva, Switzerland) M. Mineev (Joint Institute for Nuclear Research (JINR)) N. FIUZA DE BARROS (Universidade de Lisboa, Portugal) R. JONES (CERN, Geneva, Switzerland) S. KOROBOV (JINR, Dubna, Russia) S. Kolos (CERN) V. Kotov (Joint Institute for Nuclear Research (JINR)) Y. RYABOV (Petersburg Nuclear Physics Institute, Gatchina, Russia)

Presentation Materials