Event data storage and I/O

Participants
    Johannes Elmsheuser     Member     WLCG DOMA co-coordinator, USATLAS L2 Manager WBS 2.4 Computing R&D
    Marcin Nowak     Member
    Chris Pinkenburg (sPHENIX)     Collaborator     Leadership team member
    Gene Van Buren (STAR)     Collaborator     Leadership team member
    Shuwei Ye     Member

Experiments and projects
    ATLAS at the LHC (CERN)
    Google-ATLAS HL-LHC R&D Project
    sPHENIX at RHIC (BNL)
    STAR at RHIC (BNL)

Software  
    ROOT    

Related materials
    Evolution of the ATLAS analysis model for Run-3 and prospects for HL-LHC,   CHEP 2019,   Feb 2020
    Small tests with uproot, parquet files and avro files,   ATLAS SPOT meeting,   Oct 2019
    Extreme compression for Large Scale Data store,   CHEP 2019,   Nov 2019
    ATLAS Event Store and I/O developments in support for Production and Analysis in Run 3,   CHEP 2019,   Nov 2019
    Evolution of the ATLAS analysis model for Run-3 and prospects for HL-LHC,   CHEP 2019,   Nov 2019

Events

Topics

• Lossless and lossy compression tools and techniques
• Reducing storage volumes/costs while preserving data integrity for physics
• ROOT I/O
• Future possible alternatives to ROOT I/O
• ROOT as logical storage level, while physical may differ
• data transformations

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