A New Event Builder for CMS Run II
The data acquisition system (DAQ) of the CMS experiment at the CERN Large Hadron Collider (LHC) assembles events at a rate of 100 kHz, transporting event data at an aggregate throughput of 100GB/s to the high-level trigger (HLT) farm. The DAQ system has been redesigned during the LHC shutdown in 201...
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| Format: | Article |
| Language: | en_US |
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IOP Publishing
2017
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| Online Access: | http://hdl.handle.net/1721.1/108415 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1826192072495857664 |
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| author | Darlea, G.-L. Gomez-Ceballos, Guillelmo Paus, Christoph M. E. Sumorok, Konstanty C Veverka, Jan |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Darlea, G.-L. Gomez-Ceballos, Guillelmo Paus, Christoph M. E. Sumorok, Konstanty C Veverka, Jan |
| author_sort | Darlea, G.-L. |
| collection | MIT |
| description | The data acquisition system (DAQ) of the CMS experiment at the CERN Large Hadron Collider (LHC) assembles events at a rate of 100 kHz, transporting event data at an aggregate throughput of 100GB/s to the high-level trigger (HLT) farm. The DAQ system has been redesigned during the LHC shutdown in 2013/14. The new DAQ architecture is based on state-of-the-art network technologies for the event building. For the data concentration, 10/40 Gbps Ethernet technologies are used together with a reduced TCP/IP protocol implemented in FPGA for a reliable transport between custom electronics and commercial computing hardware. A 56 Gbps Infiniband FDR CLOS network has been chosen for the event builder. This paper discusses the software design, protocols, and optimizations for exploiting the hardware capabilities. We present performance measurements from small-scale prototypes and from the full-scale production system. |
| first_indexed | 2024-09-23T09:05:51Z |
| format | Article |
| id | mit-1721.1/108415 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:05:51Z |
| publishDate | 2017 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1084152022-09-26T10:25:56Z A New Event Builder for CMS Run II Darlea, G.-L. Gomez-Ceballos, Guillelmo Paus, Christoph M. E. Sumorok, Konstanty C Veverka, Jan Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Darlea, G.-L. Gomez-Ceballos, Guillelmo Paus, Christoph M. E. Sumorok, Konstanty C Veverka, Jan The data acquisition system (DAQ) of the CMS experiment at the CERN Large Hadron Collider (LHC) assembles events at a rate of 100 kHz, transporting event data at an aggregate throughput of 100GB/s to the high-level trigger (HLT) farm. The DAQ system has been redesigned during the LHC shutdown in 2013/14. The new DAQ architecture is based on state-of-the-art network technologies for the event building. For the data concentration, 10/40 Gbps Ethernet technologies are used together with a reduced TCP/IP protocol implemented in FPGA for a reliable transport between custom electronics and commercial computing hardware. A 56 Gbps Infiniband FDR CLOS network has been chosen for the event builder. This paper discusses the software design, protocols, and optimizations for exploiting the hardware capabilities. We present performance measurements from small-scale prototypes and from the full-scale production system. United States. Department of Energy National Science Foundation (U.S.) 2017-04-26T15:02:21Z 2017-04-26T15:02:21Z 2015-04 Article http://purl.org/eprint/type/JournalArticle 1742-6588 1742-6596 http://hdl.handle.net/1721.1/108415 Albertsson, K. et al. "A New Event Builder for CMS Run II." Journal of Physics: Conference Series, IOP Publishing 664 (2015): 082035. © 2017 IOP Publishing https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1088/1742-6596/664/8/082035 Journal of Physics: Conference Series Creative Commons Attribution 3.0 Unported license http://creativecommons.org/licenses/by/3.0/ application/pdf IOP Publishing IOP Publishing |
| spellingShingle | Darlea, G.-L. Gomez-Ceballos, Guillelmo Paus, Christoph M. E. Sumorok, Konstanty C Veverka, Jan A New Event Builder for CMS Run II |
| title | A New Event Builder for CMS Run II |
| title_full | A New Event Builder for CMS Run II |
| title_fullStr | A New Event Builder for CMS Run II |
| title_full_unstemmed | A New Event Builder for CMS Run II |
| title_short | A New Event Builder for CMS Run II |
| title_sort | new event builder for cms run ii |
| url | http://hdl.handle.net/1721.1/108415 https://orcid.org/0000-0002-6047-4211 |
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