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000624829 003__ SzGeCERN
000624829 005__ 20230315201104.0
000624829 0248_ $$aoai:cds.cern.ch:624829$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN$$qcerncds:physics
000624829 035__ $$9SPIRES$$a5587492
000624829 035__ $$9Inspire$$a621782
000624829 037__ $$9arXiv$$aphysics/0306150$$cphysics
000624829 037__ $$aCHEP-2003-WEPT003
000624829 041__ $$aeng
000624829 100__ $$aBrigljevic, V.$$iINSPIRE-00069252
000624829 245__ $$aThe CMS Event Builder
000624829 246__ $$aCOMPACT MUON SOLENOID
000624829 260__ $$c2003
000624829 269__ $$c2003-06
000624829 300__ $$amult. p
000624829 500__ $$9arXiv$$aConference CHEP03 Subj-class: Instrumentation and Detectors
000624829 520__ $$aThe data acquisition system of the CMS experiment at the Large Hadron Collider will employ an event builder which will combine data from about 500 data sources into full events at an aggregate throughput of 100 GByte/s. Several architectures and switch technologies have been evaluated for the DAQ Technical Design Report by measurements with test benches and by simulation. This paper describes studies of an EVB test-bench based on 64 PCs acting as data sources and data consumers and employing both Gigabit Ethernet and Myrinet technologies as the interconnect. In the case of Ethernet, protocols based on Layer-2 frames and on TCP/IP are evaluated. Results from ongoing studies, including measurements on throughput and scaling are presented. The architecture of the baseline CMS event builder will be outlined. The event builder is organised into two stages with intelligent buffers in between. The first stage contains 64 switches performing a first level of data concentration by building super-fragments from fragments of 8 data sources. The second stage combines the 64 super-fragments into full events. This architecture allows installation of the second stage of the event builder in steps, with the overall throughput scaling linearly with the number of switches in the second stage. Possible implementations of the components of the event builder are discussed and the expected performance of the full event builder is outlined.
000624829 520__ $$9Inspire$$aThe data acquisition system of the CMS experiment at the Large Hadron Collider will employ an event builder which will combine data from about 500 data sources into full events at an aggregate throughput of 100 GByte/s. Several architectures and switch technologies have been evaluated for the DAQ Technical Design Report by measurements with test benches and by simulation. This paper describes studies of an EVB test-bench based on 64 PCs acting as data sources and data consumers and employing both Gigabit Ethernet and Myrinet technologies as the interconnect. In the case of Ethernet, protocols based on Layer-2 frames and on TCP/IP are evaluated. Results from ongoing studies, including measurements on throughput and scaling are presented. The architecture of the baseline CMS event builder will be outlined. The event builder is organised into two stages with intelligent buffers in between. The first stage contains 64 switches performing a first level of data concentration by building super-fragments from fragments of 8 data sources. The second stage combines the 64 super-fragments into full events. This architecture allows installation of the second stage of the event builder in steps, with the overall throughput scaling linearly with the number of switches in the second stage. Possible implementations of the components of the event builder are discussed and the expected performance of the full event builder is outlined.
000624829 595__ $$aLANL EDS
000624829 65017 $$2SzGeCERN$$aOther Fields of Physics
000624829 693__ $$aCERN LHC$$eCMS
000624829 695__ $$9LANL EDS$$aInstrumentation and Detectors
000624829 695__ $$9LANL EDS$$aPhysics
000624829 690C_ $$aCERN
000624829 690C_ $$aARTICLE
000624829 700__ $$aBruno, G.$$iINSPIRE-00069676
000624829 700__ $$aCano, E.$$iINSPIRE-00308066
000624829 700__ $$aCittolin, S.$$iINSPIRE-00318325
000624829 700__ $$aCsilling, A.$$iINSPIRE-00075160
000624829 700__ $$aGigi, D.$$iINSPIRE-00314000
000624829 700__ $$aGlege, F.$$iINSPIRE-00314039
000624829 700__ $$aGomez-Reino, R.
000624829 700__ $$aGulmini, M.$$iINSPIRE-00309371
000624829 700__ $$aGutleber, J.$$iINSPIRE-00309395
000624829 700__ $$aJacobs, C.
000624829 700__ $$aKozlovszky, M.
000624829 700__ $$aLarsen, H.$$iINSPIRE-00205730
000624829 700__ $$aMagrans de Abril, I.$$iINSPIRE-00310400
000624829 700__ $$aMeijers, F.$$iINSPIRE-00314177
000624829 700__ $$aMeschi, E.$$iINSPIRE-00107072
000624829 700__ $$aMurray, S.
000624829 700__ $$aOh, A.$$iINSPIRE-00320498
000624829 700__ $$aOrsini, L.$$iINSPIRE-00311140
000624829 700__ $$aPollet, L.
000624829 700__ $$aRacz, A.$$iINSPIRE-00318150
000624829 700__ $$aSamyn, D.$$iINSPIRE-00318173
000624829 700__ $$aScharff-Hansen, P.
000624829 700__ $$aSchwick, C.$$iINSPIRE-00314370
000624829 700__ $$aSphicas, P.$$iINSPIRE-00143482
000624829 700__ $$aO'Dell, V.$$iINSPIRE-00319226
000624829 700__ $$aSuzuki, I.$$iINSPIRE-00022788
000624829 700__ $$aBerti, L.
000624829 700__ $$aMaron, G.$$iINSPIRE-00320176
000624829 700__ $$aToniolo, N.$$iINSPIRE-00312453
000624829 700__ $$aZangrando, L.
000624829 700__ $$aNinane, A.
000624829 700__ $$aErhan, S.$$iINSPIRE-00318963
000624829 700__ $$aBhattacharya, S.
000624829 700__ $$aBranson, J.$$iINSPIRE-00319000
000624829 710__ $$5CERN?
000624829 773__ $$cWEPT003$$peConf C$$v0303241$$y2003
000624829 773__ $$tTalk given at$$wC03-03-24.1
000624829 859__ $$ffrans.meijers@cern.ch
000624829 8564_ $$uhttp://www.slac.stanford.edu/econf/C0303241/proc/papers/_vti_cnf/WEPT003.PDF$$yProceedings write-up on eConf
000624829 8564_ $$82439828$$s572261$$uhttps://cds.cern.ch/record/624829/files/arXiv:physics_0306150.pdf
000624829 901__ $$uCERN
000624829 901__ $$uFermilab
000624829 901__ $$uLegnaro
000624829 901__ $$uLouvain-la-Neuve
000624829 901__ $$uUCLA
000624829 901__ $$uUCSD
000624829 916__ $$sn$$w200326
000624829 961__ $$c20100417$$h1145$$lCER01$$x20030623
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000624829 980__ $$aConferencePaper
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