002742881 001__ 2742881
002742881 005__ 20201027203533.0
002742881 0248_ $$aoai:cds.cern.ch:2742881$$pcerncds:FULLTEXT
002742881 037__ $$aATL-DAQ-SLIDE-2020-414
002742881 041__ $$aeng
002742881 088__ $$9ATL-COM-DAQ-2020-089
002742881 100__ $$0AUTHOR|(INSPIRE)INSPIRE-00218283$$0AUTHOR|(SzGeCERN)446687$$aKolos, Serguei$$gOn behalf of the ATLAS TDAQ [email protected]$$uUniversity of California, Irvine
002742881 110__ $$aThe ATLAS collaboration
002742881 245__ $$aThe new software based read out driver for the ATLAS experiment
002742881 260__ $$c2020
002742881 269__ $$aGeneva$$bCERN$$c27 Oct 2020
002742881 300__ $$a18 p
002742881 520__ $$aIn order to maintain sensitivity to new physics in the coming years of LHC operations, the ATLAS experiment is upgrading a portion of the front-end electronics and replacing parts of the detector with new devices that can operate under the much harsher background conditions of the future LHC. The legacy DAQ system features detector-specific custom VMEbus boards (Readout Drivers or 'RODs') devoted to data processing, configuration and control. Data are then received by a common Readout System (ROS), responsible for buffering during High-Level Trigger (HLT) processing. From Run 3 onward, all new trigger and detector systems will be read out using new components, replacing the RODs and ROS. This new path will feature an application called the Software Readout Driver (SW ROD), which will run on a commodity server receiving front-end data via the Front-End Link eXchange (FELIX) system. The SW ROD will perform event fragment building and buffering as well as serving the data on request to the HLT. The SW ROD application has been designed as a highly customizable high-performance framework providing support for detector specific event building and data processing algorithms. The Run 3 implementation is capable of building event fragments at a rate of 100 kHz from an input stream consisting of up to 120 MHz of individual data packets. This document will cover the design and the implementation of the SW ROD application and the results of performance measurements taken with the server models selected to host SW ROD applications in Run 3.
002742881 594__ $$aSLIDE
002742881 595__ $$aCERN CDS-Invenio WebSubmit
002742881 65017 $$2SzGeCERN$$aParticle Physics - Experiment
002742881 65027 $$2SzGeCERN$$aDAQ and Trigger
002742881 6531_ $$9CERN$$aATLAS,
002742881 6531_ $$9CERN$$aDAQ,
002742881 6531_ $$9CERN$$aReadout System
002742881 6531_ $$9CERN$$aFELIX
002742881 690C_ $$aCERN
002742881 690C_ $$aINTNOTE
002742881 690C_ $$aPRIVATLAS
002742881 690C_ $$aPUBLATLASSLIDE
002742881 693__ $$aCERN LHC$$eATLAS
002742881 710__ $$5PH-EP
002742881 710__ $$gATLAS Collaboration
002742881 8564_ $$uhttp://cds.cern.ch/record/2734082$$yOriginal Communication (restricted to ATLAS)
002742881 859__ [email protected]
002742881 8564_ $$82255519$$s3333696$$uhttp://cds.cern.ch/record/2742881/files/ATL-DAQ-SLIDE-2020-414.pdf
002742881 916__ $$sn$$w202070
002742881 960__ $$a91
002742881 962__ $$b2730835$$nvirtual20201012
002742881 963__ $$aPUBLIC
002742881 970__ $$a000770307CER
002742881 980__ $$aPUBLATLASSLIDE
002742881 980__ $$aSlides