A software approach for readout and data acquisition in CMS
Traditional systems dominated by performance constraints tend to neglect other qualities such as maintainability and configurability. Object-Orientation allows one to encapsulate the technology differences in communication sub-systems and to provide a uniform view of data transport layer to the syst...
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| Veröffentlicht in: | IEEE transactions on nuclear science 2000-04, Vol.47 (2), p.250-255 |
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| creator | Antchev, G. Cano, E. Chatellier, S. Cittolin, S. Erhan, S. Gigi, D. Gutleber, J. Jacobs, C. Meijers, F. Nicolau, R. Orsini, L. Pollet, L. Racz, A. Samyn, D. Sinanis, N. Sphicas, P. |
| description | Traditional systems dominated by performance constraints tend to neglect other qualities such as maintainability and configurability. Object-Orientation allows one to encapsulate the technology differences in communication sub-systems and to provide a uniform view of data transport layer to the systems engineer. We applied this paradigm to the design and implementation of intelligent data servers in the Compact Muon Solenoid (CMS) data acquisition system at CERN to easily exploiting the physical communication resources of the available equipment. CMS is a high-energy physics experiment under study that incorporates a highly distributed data acquisition system. This paper outlines the architecture of one part, the so called Readout Unit, and shows how we can exploit the object advantage for systems with specific data rate requirements. A C++ streams communication layer with zero copying functionality has been established for UDP, TCP, DLPI and specific Myrinet and VME bus communication on the VxWorks real-time operating system. This software provides performance close to the hardware channel and hides communication details from the application programmers. |
| doi_str_mv | 10.1109/23.846157 |
| format | Article |
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Object-Orientation allows one to encapsulate the technology differences in communication sub-systems and to provide a uniform view of data transport layer to the systems engineer. We applied this paradigm to the design and implementation of intelligent data servers in the Compact Muon Solenoid (CMS) data acquisition system at CERN to easily exploiting the physical communication resources of the available equipment. CMS is a high-energy physics experiment under study that incorporates a highly distributed data acquisition system. This paper outlines the architecture of one part, the so called Readout Unit, and shows how we can exploit the object advantage for systems with specific data rate requirements. A C++ streams communication layer with zero copying functionality has been established for UDP, TCP, DLPI and specific Myrinet and VME bus communication on the VxWorks real-time operating system. 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| identifier | ISSN: 0018-9499 |
| ispartof | IEEE transactions on nuclear science, 2000-04, Vol.47 (2), p.250-255 |
| issn | 0018-9499 1558-1578 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Buses (vehicles) Channels Collision mitigation Communication systems Communications technology Computer programs Data acquisition Data acquisition systems Data engineering Maintainability Maintenance engineering Mesons Physics Product introduction Real time systems Reproduction Software Solenoids Systems engineering and theory TCP (protocol) |
| title | A software approach for readout and data acquisition in CMS |
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