Public Minutes of 103 rd Steering Board Meeting

June 20th, 2017

Present: Andrea Dotti, Makoto Asai, Luciano Pandola, Soon Yung Jun, Koichi Murakami, Vladimir Ivantchenko, Hisaya Kurashige, Laurent Garnier, John Allison (OB Liaison), Alex Howard, Dennis Wright, Alberto Ribon, Gunter Folger, Gabriele Cosmo, Ben Morgan, Ivana Hrivnacova

Excused: Sébastien Incerti,


  1. Regular items
  • The open requirements, pending actions, status of long open bug reports, as well as physics and computing performance monitoring are reviewed.
  • After bug-fix for memory in Bertini, some larger-than-expected changes are seen in shower-shapes in heavy absorbers (tungsten and lead). Coalescence model (because of the Bertini model used at higher energy than before) needs to be looked at wrt to this new energy range usage.
  • Also, the increase in memory footprint compared to 10.2.p03 must be understood.
  1. Status of 10.4-beta release
  • The beta release is on schedule.
  • A second candidate tag will be made within a few days.
  1. Release schedule of 10.4
  • Final date: December 8th, 2017
  • The group deadlines are:

  • October 27th - GROUP-1 categories deadline

  • configuration, analysis, global, materials, graphics_reps, intercoms, geometry/management, particles, track

  • November 3rd - GROUP-2 categories deadline

  • rest of geometry, processes (management, transportation, electromagnetic, scoring), digits_hits, tracking

  • November 10th - GROUP-3 categories deadline

  • the rest of processes, parameterisations, event, run, readout, persistency, physics_lists, visualization, interfaces, g3tog4, error_propagation, examples, environments

  • To ensure the release to be on time, the procedure to be observed is as follows:

  • Respect of the deadlines for the developments

  • i.e. development tags may be rejected if the deadline is not met;

  • In cases of withdrawal of developments in favour of a “stable” version of the code for the release, the withdrawal has to happen well before the deadline period so that it can be included in a reference tag and well tested;
  • Have new data sets and major configuration changes included in reference tags well before the deadlines period;
  • Minimize the usual final rush of tags before the deadline.
  1. 2017 Collaboration meeting
  • Program committee membership is endorsed

  • Davide Mancusi (CEA)
  • Mihaly Novak (CERN)
  • Luis Sarmiento (Lund U.)
  • Jeremy Brown (Monash U.) - local organizer
  • Susanna Guatelli (Wollongong U.) - local organizer
  • Makoto Asai (SLAC) - ex-officio
  • Marc Verderi (LLR) - ex-officio

  • Meeting web site

  • Session schedule is already implemented, can be looked at

  • Note : Due to the lodging difficulties for Sunday night, the meeting will start at 11:00 on Monday, that enables people to stay at Sydney and come to Wollongong in the Monday morning.
  1. Migration to Git
  • Task force is formed and operational

  • if interested to contribute, please contact Ben Morgan and Gunter Folger.

  • First report is expected at the Collaboration Meeting.

  1. Documentation overhaul
  • As the first step, installation guide migrated to Sphinx.

  • A dedicated session at Collaboration Meeting is planned.

  1. New collaboration logo
  • A vote has been organized between the G4-logo committee members and the results have to be discussed
  • Plan to finalize the process by the Collaboration Meeting.
  1. AOB

8.1. Recent events

  • Technical Forum, March 23rd, 2017


  • Oversight Board meeting on March 21st, 2017

  • Petteri Nieminen (ESA) is elected as the new OB chair.

  • 12th Geant4 Space Users Workshop, April 10-12, 2017 @ Guildford, UK

  • About 60 participants

  • Tutorials

  • One day short Geant4 tutorial (in Vietnamese) followed by a one day user workshop (in English) at Ton Duc Thang Univ. in Ho Chi Minh City, Vietnam, 15-16 June 2017, web page ready, 1st time in South East Asia (Hoang, Sebastien)


  • Beginner course in Alghero (4-9 June 2017). Pablo, Luciano, Francesco, as a part of the “14th Seminar on Software for Nuclear, Sub-nuclear and Applied Physics” organized by INFN-LNS and University of Sassari. Expected 35-40 students.


  • Orsay Tutorial: Paris-Saclay: 15th - 19th of May


8.2. Near future events

  • LPCC Detector Simulation workshop at CERN, June 26-27


  • HSF CWP meeting at Annecy, June 26-30


  • ACAT @ Seattle, WA, US, Aug 21-25, 2017


  • Geant4 Users Workshop, Wollongong, Australia, September 19-22, 2017

  • Early bird registration deadline : July 31

  • CHEF (Calorimetry for High Energy Frontier) 2017 - On October 2-6 at Lyon, France


  • IEEE NSS/MIC at Atlanta, Georgia, US, Oct 21-18, 2017


  • Tutorials

  • Short Geant4 tutorial at the TRISEP: Canadian summer school which is organized by SNOLAB, TRIUMF and Perimeter University on July 10-21.
  • Geant4 tutorial @ Seoul, Korea, July 24-28, 2017


Meeting Date

Tuesday, June 20, 2017 - 12:00