News

• Valentin mentioned a possibility of short-term internships for candidates from Dutch universities.
• Branch 6.40 this week.

Shift handover

• Olivier -> Jakob
• Issues assigned, forum posts answered.
• Windows failures, fix merged today.
• Mac beta updated before the weekend.

Proposal + Report by Serguei

• Provide a possibility to browse relatively small files directly in Jupyter notebooks.
• Size is limited. Completely decoupled from C++ at the moment.
• Uses ROOT functionality behind the scenes for local files.
• It is a new magic command and it doesn't conflict with any of the existing functionality. Maybe this can go in 6.40?
• Could this be an attack surface?
• No, because this is completely decoupled.
• Files larger than 10MB will get a warning.
• Fixed some other issues.

Meeting Summaries

• I/O
• Nothing to report.
• Statistical Analysis Software
• Presentation on HS3 serialization, want to do an open data release (open likelihood).
• They will also provide some demo notebooks for p-value scans (to reproduce the plots from the paper).
• PPP
• MPUnits presentation by Mateusz 2 weeks ago (person who presented at the HSF seminar)
• A little bit more time to ask questions. In the end, the conclusion was not very different.
• Python C++ Bindings Meeting
• Normal round table.
• Equal-to operator falls back to pointer comparison. Discussion on this.
• Migration has succeeded for the most part. Now need to make it consistent between C++ and Python.
• Planning/Stakeholders
• 2 weeks ago, it went very well.
• LIM
• A couple of issues raised by Atlas:
  • Rewriting built-in things raised some issues because some packages can't be found.
  • xxhash is a dependency of libcore but internal. They will open an issue on this.
  • There is a new major version of XRootD released. Will not go with 6.40 release.
  • Atlas is asking for Python 3.14. They are looking at the Ubuntu version that is coming out with 3.14.

Liaisons Report

• Nothing to report/relevant people were absent in the meeting.

Topic

• Branching if v6.40 patches. No objections.

Round table

• See the document, added notes when they were missing.

Philippe:

• Adding support for custom alignments of classes merging today
• Continuing work on 1GB limit.

Vincenzo
- There is a memory hoarding that is ongoing.
- Did not converge on a solution yet. It's also an issue on GitHub.