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Present
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Vito Di Benedetto, Giuseppe Cerati, Lynn Garren, Krzysztof Genser, Herbert Greenlee, Tom Junk, Kyle Knoepfer, Gianluca Petrillo, Erica Snider, Hans Wenzel
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Remote
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Bruce Baller, Erin Conley, Aaron Higuera, Katherine Lato, Saba Sehrish, Gleb Sinev, Filippo Varanini
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- proposing to upgrade to GNU C++ 7.3 (
e17) after adopting art 2.11
- art 2.11 also has e15
- [Gianluca Petrillo] we are interested in feedback on resource usage of Clang builds compared to GCC ones
- [Lynn Garren] Is clang build needed for SLF6? [Herbert Greenlee] Why ? [Lynn Garren] so that it can be checked that the code compiles with it.
- [Lynn Garren] what experiments think of the idea of setting up gallery together with LArSoft? [Herbert Greenlee] MicroBooNE already does [Tom Junk] that would save some potential conflicts
Conclusions
- v06_73_00 will the last release supported for El Capitan
- experiments are no requiring a SLF7 binary distribution with
c2 qualifiers
- acceptance of the idea of upgrading GCC compiler
- We will send out a survey form to find out what development platform is used
- [Bruce Baller] uses OSX native development environment (XCode)
- plan to evaluate options for an improved event display (2018 LArSoft Workplan)
- including a demonstrator with some key features
- expect variant of model-view-controller or model-view-presenter pattern
- unlikely for LArSoft to have effort to put into the development and implementation
- a document with the proposed requirements is available on google doc
- [Filippo Varanini] feature: displaying wave forms in the frequency domain
- [Filippo Varanini] how is the event display managing information from different detectors? [Erica Snider] photo detector systems need to be integrated too; in general, all relevant data stored as data products (not only from TPC) should be supported; the goal is to have a framework that can be extended easily to support new data
- [Filippo Varanini] will provide feedback based on experience with the ICARUS event display
- [Giuseppe Cerati] sharing event displays via links are essential for reporting issues and collaboration
Conclusions
- encouraging people caring for event displaying to take a look to the requirements in the google doc
- send comments to larsoft-team@fnal.gov
- a goal is to separate propagation through detector from charge and light transportation
- more complete exposure and access to Geant4 abilities
- scintillation also from outside the TPC field cage
- ability to plug in scintillation and ionisation models (possibly correlated)
Conclusions
- Geant4 10.3 patch 1 has charge kaon cross sections not matching modern experimental data and models: this is a bug
- patch 3 solves the bug
- [Erica Snider] what else has changed in Geant4 10.3? [Krzysztof Genser] this being a patch release, no physics change is expected that is not a bug
- [Bruce Baller] is this affecting only charged kaons? neutral kaons are an important background for proton decay studies [Hans Wenzel] yes, as the data used is from charge kaons, although neutral kaon might be improving as well
- [Hans Wenzel] Geant4 is always eager to receive feedback on comparison between experiment data and Geant4 simulation
Conclusions
- LArSoft will start the regular upgrade path, asking for approval
- the earliest this might happen is next week release
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