ROOT Team Meeting

Europe/Zurich
32/1-A24 (CERN)

32/1-A24

CERN

40
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Bertrand Bellenot (CERN)
Videoconference
ROOT Team Meeting
Zoom Meeting ID
97374667082
Host
Axel Naumann
Alternative hosts
Lorenzo Moneta, Danilo Piparo, Vincenzo Eduardo Padulano, Bertrand Bellenot, Jakob Blomer, Enrico Guiraud
Useful links
Join via phone
Zoom URL
ROOT Team Meeting 15th April 
 
Shift handover: 
- all is green, problem with mac mitiigated 
- almost everything assigned 
 
Meeting summaries: 
- RooFit workshop - very successful - a summary at a meeting soon 
- PPP - Jonas' presentation on histograms - a follow up discussion is requested (a few people were missing, an important topic to be discussed)
- I/O meeting - CHEP abstracts discussion - maybe a discussion in the ROOT meeting next week? 
 
XGBOOST and RBDT issue initiated by the PR#15173 from Jonas 
- Motivation: fix RBDT issue in the tutorials - silently giving wrong results 
- Discovered on the side RBDT XGBOOST test in python fails (it was not working for a while)
- possibility of using XGBOOST through ROOT exists since 2019 -> it worked for a while but at some point we stopped testing it on the nodes --> we have a fix now but the fix involves an issue of XGBOOST and cppyy interfering due to c++ symbols 
- Vim found a fix but the fix is in the XGBOOST (if this works is great)
- the fix is big but it is self-contained - patch, merge and backport? - yes but let's be careful that is really works well - but alma9 will be red 
 
Roundtable
- point to think about (esp. regarding 6.32) from Danilo: We need to decide what to do with the inclusion of GPL packages in our future binaries. 
- LGPL 2 (what we use) vs LGPL 3 (that could solve some of our issues)
- for sure we need to communicate better what we are distributing (in README)
There are minutes attached to this event. Show them.
    • 4:00 PM 4:01 PM
      Find notetaker 1m
    • 4:01 PM 4:05 PM
      News 4m
    • 4:05 PM 4:10 PM
      Shift handover 5m
    • 4:10 PM 4:20 PM
      Meeting Summaries and Plans 10m
      • I/O
      • TMVA
      • RooFit
      • PPP
      • Planning / Godparents /...
      • LIM
    • 5:00 PM 5:25 PM
      Round Table 25m
    • 5:25 PM 5:30 PM
      A.O.B. 5m