Go to the Indico Home Page Oldest event Older event Up to category Newer event Newest event Printable version
  • Compact style
  • Indico style
  • Indico style - inline minutes
  • Indico style - numbered
  • Indico style - numbered + minutes
  • Indico Weeks View
    • Switch to the management area of this event
    Login

    ROOT Parallelisation, Performance and Programming Model Meeting

    → Europe/Zurich
    42/R-024 (CERN)

    42/R-024

    CERN

    6
    Show room on map
    Danilo Piparo (CERN)
    Description
    CERN number: 71400 Extension: 109284483#
    Hide

    Present: Enrico, Enric, Guilherme, Xavi, Gerri, Philippe, Danilo

    Parallel hadd:

    - We need to understand the penalty when merging with one worker

    - For merging trees we can only check if changing compression algorithm/parameters

    - Parallel merging of files containing trees is hardly beneficial due to the large amount of write/read operations wrt the sequential case.

    TDF Sprint:

    - The plan for the sprint is agreed

    - Vassil will be put in the loop as there is a lot of interplay with his program of work

    - Examples of different formats in input can be already constructed building trees starting from csv files or, potentially, sql files via TTreeSQL.

    The items we discussed for release 6.10 have been added to JIRA: https://sft.its.cern.ch/jira/browse/ROOT-8754

    There are minutes attached to this event. Show them.
      • 16:00 → 16:20
        TDataFrame Sprint for 6.10/00 20m
        Speaker: Danilo Piparo (CERN)
        TDF_Sprint_200417.pdf
      • 16:20 → 16:40
        Parallel file merging 20m
        Speaker: Xavier Valls Pla (University Jaume I (ES))
        hadd2.pdf