Work items for 2017 


 List with description

Items marked with refer to new developments.
Items marked with will involve new man-power or contribution from external sources interested in the project.
Items marked with will require coordination with more than one Working Group.

  1. Architecture review:
    • Implement use of C++11/14 constructs in key areas
      • Continue adiabatic adoption of C++11 and C++14 constructs to simplify and enhance performance on key areas of the geometry modeller and navigation system.
  2. Navigation & optimisation:
    • Profiling and optimisation of multiple navigation
      • Revise the design and implementation of multiple navigation and coupled-transportation.
      • Identify any open issue in application to fast-simulation, scoring and layered tracking geometries and in conjuction with magnetic field transport.
      • Identify possible CPU performance penalties which may be introduced with the activation of coupled-transportation. Optimize overall performance (ATLAS request).
    • Separate safety computation and state from navigator
      • Loose coupling of G4Navigator in the computation of the safety distances from geometrical boundaries, factorising out the implementation now included in G4Navigator class, to get rid of potential side effects.
      • Implement strategy for a light-weight base navigator class not holding navigation state, eventually adopting template arguments.
    • Implement prototype navigator based on VecGeom
      • Based on revision of G4Navigator above, provide first prototype implementation of a navigator adapter making full use of navigation capabilities in VecGeom.
    • Investigate benefits of FSAL/interpolation in field propagation
      • Review FSAL integration/stepper classes and evaluate their performance in field propagation in terms of accuracy and speed.
  3. New features:
    • Progress in the implementation of the Unified Solids library with progressive adoption of shapes from VecGeom
      • Complete implementation of remaining solids in the Unified Solids library (VecGeom) for geometrical shapes.
      • Integrate with the new vectorised implementation of the primitives from the VecGeom geometry modeller currently under development.
    • Simplify adoption of VecGeom shapes with direct interface to VecGeom from wrappers
      • Following removal of USolids module in VecGeom, adapt wrappers in Geant4 by directly interfacing to VecGeom and providing necessary basic functionalities in G4VSolid.

Previous years planned activities

2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016

Created: 18 January 2017
Modified: 28 January 2017, GC