HL-LHC Computing Review: Common Tools and Community Software

preprint2020arXivOpen access
HEP Software Foundation:Thea AarrestadSimone AmorosoMarkus Julian AtkinsonJoshua BendavidTommaso BoccaliAndrea BocciAndy BuckleyMatteo CacciariPaolo CalafiuraPhilippe CanalFederico CarminatiTaylor ChildersVitaliano CiulliGloria CortiDavide CostanzoJustin Gage DezoortCaterina DoglioniJavier Mauricio DuarteAgnieszka DziurdaPeter ElmerMarkus ElsingV. Daniel ElviraGiulio EulisseJavier Fernandez MenendezConor FitzpatrickRikkert FrederixStefano FrixioneKrzysztof L GenserAndrei GheataFrancesco GiuliVladimir V. GligorovHadrien Benjamin GraslandHeather GrayLindsey GrayAlexander GrohsjeanChristian GütschowStephan HageboeckPhilip Coleman HarrisBenedikt HegnerLukas HeinrichBurt HolzmanWalter HopkinsShih-Chieh HsuStefan HöchePhilip James IltenVladimir IvantchenkoChris JonesMichel JouvinTeng Jian KhooIvan KiselKyle KnoepfelDmitri KonstantinovAttila KrasznahorkayFrank KraussBenjamin Edward KriklerDavid LangePaul LaycockQiang LiKilian LieretMiaoyuan LiuVladimir LoncarLeif LönnbladFabio MaltoniMichelangelo ManganoZachary Louis MarshallPere MatoOlivier MattelaerJoshua Angus McFaydenSamuel MeehanAlaettin Serhan MeteBen MorganStephen MrennaServesh MuralidharanBen NachmanMark S. NeubauerTobias NeumannJennifer NgadiubaIsobel OjalvoKevin PedroMaurizio PeriniDanilo PiparoJim PivarskiSimon PlätzerWitold PokorskiAdrian Alan PolStefan PrestelAlberto RibonMartin RitterAndrea RizziEduardo RodriguesStefan RoiserHolger SchulzMarkus SchulzMarek SchönherrElizabeth Sexton-KennedyFrank SiegertAndrzej SiódmokGraeme A StewartMalik SudhirSioni Paris SummersSavannah Jennifer ThaisNhan Viet TranAndrea ValassiMarc VerderiDorothea Vom BruchGordon T. WattsTorre WenausEfe Yazgan

Abstract

Common and community software packages, such as ROOT, Geant4 and event generators have been a key part of the LHC's success so far and continued development and optimisation will be critical in the future. The challenges are driven by an ambitious physics programme, notably the LHC accelerator upgrade to high-luminosity, HL-LHC, and the corresponding detector upgrades of ATLAS and CMS. In this document we address the issues for software that is used in multiple experiments (usually even more widely than ATLAS and CMS) and maintained by teams of developers who are either not linked to a particular experiment or who contribute to common software within the context of their experiment activity. We also give space to general considerations for future software and projects that tackle upcoming challenges, no matter who writes it, which is an area where community convergence on best practice is extremely useful.

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