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Evaluation of 100 Gb/s LAN networks for the LHCb DAQ upgrade / Vőneki, Balázs (CERN) ; Valat, Sébastien (CERN) ; Schwemmer, Rainer (CERN) ; Neufeld, Niko (CERN) ; Machen, Jon (PSI, Villigen) ; Cámpora Pérez, Daniel Hugo (Seville U.)
The LHCb experiment[1] is preparing a major upgrade resulting in a need for a high-end network for a data acquisition system. Its capacity will grow up to a target speed of 40 Tb/s, aggregated by 500 nodes. [...]
2016 - 3 p. - Published in : 10.1109/RTC.2016.7543169
In : 20th IEEE-NPSS Real Time Conference, Padua, Italy, 5 - 10 Jun 2016

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(91)

RDMA Optimizations on Top of 100 Gbps Ethernet for the Upgraded Data Acquisition System of LHCb / Vőneki, Balázs (CERN) ; Valat, Sébastien (CERN) ; Neufeld, Niko (CERN)
The LHCb experiment [1] will be upgraded in 2018–2019 to change its operation to a triggerless full-software readout scheme from Run3. This results in increasing the load of the event building and filtering farm by a factor of 40. [...]
2018 - 6 p. - Published in : Springer Proc. Phys. 212 (2018) 376-381
In : International Conference on Technology and Instrumentation in Particle Physics 2017, Beijing, China, 21 - 26 May 2017, pp.376-381

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(57)

Large-scale DAQ tests for the LHCb upgrade / Falabella, Antonio (INFN, CNAF) ; Manzali, Matteo (Ferrara U.) ; Giacomini, Francesco (INFN, CNAF) ; Marconi, Umberto (INFN, Bologna) ; Voneki, Balasz (CERN) ; Neufeld, Niko (CERN) ; Valat, Sebastian (CERN)
The Data Acquisition (DAQ) of the LHCb experiment[1] will be upgraded in 2020 to a high-bandwidth trigger-less readout system. In the new DAQ event fragments will be forwarded to the to the Event Builder (EB) computing farm at 40 MHz. [...]
2016 - 2 p. - Published in : 10.1109/RTC.2016.7543156
In : 20th IEEE-NPSS Real Time Conference, Padua, Italy, 5 - 10 Jun 2016

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(53)

Reliability of datagram transmission on Gigabit Ethernet at full link load / Barczyk, A ; Carbone, A ; Dufey, J P ; Galli, D ; Jost, B ; Marconi, U ; Neufeld, N ; Peco, G ; Vagnoni, V M
The reliability of datagram transmission over Copper Gigabit Ethernet using commodity hardware at sustained Gb/s rate is crucial for the functioning of the software trigger layers of the LHCb experiment. We aim to demonstrate that a nowadays available high-end commodity PC can be employed to achieve the required network performance, in particular to implement a sub-farm controller node. [...]
LHCb-2004-030.- Geneva : CERN, 2004 Access to fulltext document: PDF;

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(44)

Network Processors for a 1-MHz trigger-DAQ system / Barczyk, A ; Dufey, J P ; Jost, B ; Neufeld, N
Network processors (NP), originally developed for applications in high-end network routers, have a great potential as building blocks for a high-speed networked data acquisition (DAQ)-Trigger system. After an introduction to NP, we will present several applications which illustrate their power in coping with high event rates and aggregate traffic of above 10 GB/s. [...]
2004 - Published in : IEEE Trans. Nucl. Sci. 51 (2004) 545-52 IEEE Published version, local copy: PDF;

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(43)

Protocol-Independent Event Building Evaluator for the LHCb DAQ System / Cámpora Pérez, Daniel Hugo (CERN) ; Schwemmer, Rainer (CERN) ; Neufeld, Niko (CERN)
The Data Acquisition (DAQ) system of LHCb is a complex real-time system. It will be upgraded to provide LHCb with an all-software, trigger-free readout starting from 2020. [...]
2015 - 5 p. - Published in : IEEE Trans. Nucl. Sci. 62 (2015) 1110-1114
- Published in : (2014)
In : 19th IEEE-NPSS Real-Time conference 2014, Nara, Japan, 26 - 30 May 2014, pp.1110-1114

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(42)

A Performance Analysis Plugin for DAQPIPE / Lieret, Kilian (CERN)
In 2020 the Data Acquisition (DAQ) of the LHCb experiment will be updated to feature a trigger-free readout. [...]
CERN-STUDENTS-Note-2016-002. - 2015
Access to fulltext

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(41)

Ethernet evaluation in data distribution traffic for the LHCb filtering farm at CERN / Krawczyk, Rafał Dominik (CERN) ; Pisani, Flavio (CERN) ; Colombo, Tommaso (CERN) ; Frank, Markus (CERN) ; Neufeld, Niko (CERN)
This paper evaluates the real-time distribution of data over Ethernet for the upgraded LHCb data acquisition cluster at CERN. The system commissioning ends in 2021 and its total estimated input throughput is 32 Terabits per second. [...]
2021 - 12 p. - Published in : EPJ Web Conf. 251 (2021) 04001 Fulltext: PDF;
In : 25th International Conference on Computing in High-Energy and Nuclear Physics (CHEP), Online, Online, 17 - 21 May 2021, pp.04001

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Ethernet evaluation in data distribution traffic for the LHCb filtering farm at CERN / Krawczyk, Rafal Dominik (speaker) (CERN)
This paper evaluates the real-time distribution of data over Ethernet for the upgraded LHCb data acquisition cluster at CERN. The total estimated throughput of the system is 32 Terabits per second. [...]
2021 - 677. Conferences; 25th International Conference on Computing in High Energy & Nuclear Physics External links: Talk details; Event details In : 25th International Conference on Computing in High Energy & Nuclear Physics

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Upgrade of the CMS Event Builder / Petrucci, Andrea (speaker) (CERN)
The Data Acquisition (DAQ) system of the Compact Muon Solenoid (CMS) experiment at CERN assembles events at a rate of 100 kHz, transporting event data at an aggregate throughput of 100 GB/s. By the time the LHC restarts after the 2013/14 shut-down, the current compute nodes and networking infrastructure will have reached the end of their lifetime. [...]
2012 - 1346. Conferences; Computing in High Energy and Nuclear Physics (CHEP) 2012 External links: Talk details; Event details In : Computing in High Energy and Nuclear Physics (CHEP) 2012

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