000642751 001__ 642751 000642751 005__ 20260209140305.0 000642751 0247_ $$2doi$$a10.1051/epjconf/202533701145 000642751 0247_ $$2INSPIRETeX$$aCarceller:2025dpq 000642751 0247_ $$2inspire$$ainspire:3065413 000642751 0247_ $$2ISSN$$a2100-014X 000642751 0247_ $$2ISSN$$a2101-6275 000642751 0247_ $$2datacite_doi$$a10.3204/PUBDB-2025-05600 000642751 0247_ $$2openalex$$aopenalex:W4414882368 000642751 037__ $$aPUBDB-2025-05600 000642751 041__ $$aEnglish 000642751 082__ $$a530 000642751 1001_ $$0P:(DE-HGF)0$$aCarceller, Juan Miguel$$b0$$eCorresponding author 000642751 1112_ $$a27th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2024)$$cKrakow$$d2024-10-19 - 2024-10-25$$gCHEP2024$$wPoland 000642751 245__ $$aReconstruction in Key4hep using Gaudi 000642751 260__ $$aLes Ulis$$bEDP Sciences$$c2025 000642751 300__ $$a8 000642751 3367_ $$2ORCID$$aCONFERENCE_PAPER 000642751 3367_ $$033$$2EndNote$$aConference Paper 000642751 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$mjournal 000642751 3367_ $$2BibTeX$$aINPROCEEDINGS 000642751 3367_ $$2DRIVER$$aconferenceObject 000642751 3367_ $$2DataCite$$aOutput Types/Conference Paper 000642751 3367_ $$0PUB:(DE-HGF)8$$2PUB:(DE-HGF)$$aContribution to a conference proceedings$$bcontrib$$mcontrib$$s1767889796_1893140 000642751 520__ $$aKey4hep, a software framework and stack for future accelerators, integrates all the steps in the typical offline pipeline: generation, simulation, reconstruction and analysis. The different components of Key4hep use a common event data model, called EDM4hep. For reconstruction, Key4hep leverages Gaudi, a proven framework already in use by several experiments at the LHC, to orchestrate configuration and execution of reconstruction algorithms.In this contribution, a brief overview of Gaudi is given. The specific developments built to make Gaudi work seamlessly with EDM4hep (and therefore in Key4hep) are explained, as well as other improvements requested by the Key4hep community. The list of developments includes a new I/O service to run algorithms that read or write EDM4hep files in multithreading in a threadsafe way and a possibility to easily switch the EDM4hep I/O to the new ROOT RNTuple format for reading or writing. We show that both native (algorithms that use EDM4hep as input and output) and non-native algorithms from the ILC community can run together in Key4hep, picking up on knowledge and software developed over many years. 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