GlueX Offline Meeting, April 18, 2012
GlueX Offline Software Meeting
Wednesday, April 18, 2012
1:30 pm EDT
JLab: CEBAF Center, F326/327
Contents
Agenda
- Announcements
- EVIO version 4
- std::shared_ptr<>() and new C++ standard
- Review of minutes from the last meeting: all
- Reconstruction sub-group reports
- Calorimeters
- Tracking
- Tracking/FDC Segment code changed to read target z-position and length from XML geometry (before: z-position was hard-coded to 65.0 cm)
- CDC Candidate factory: no longer produces spurious matches between axial layers 1 and 5 when there are no matching hits in layer 3
- PID
- Offline Software Review Planning
- Action Item Review
- Review of recent repository activity: all
Communication Information
Video Conferencing
- ESNet: 8542553
- EVO:
- Meeting URL: http://evo.caltech.edu/evoNext/koala.jnlp?meeting=e9eIeivev8aMaMIvaaI9
- Phone Bridge ID: 13 0949
Slides
Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2012-2Q
on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2012-2Q/ .
Minutes
Present:
- CMU: Will Levine, Paul Mattione
- IU: Ryan, Mitchell, Kei Moriya, Matt Shepherd
- JLab: Mark Ito (chair), David Lawrence, Irina Semonova, Simon Taylor, Elliott Wolin
Announcements
- EVIO version 4 is out: Elliott
This version has a unified interface to files, buffers, and sockets. The details of the implementation are hidden. Dictionaries have been added.
- The new C++ standard and shared pointers: Elliott
A new version of the C++ standard has been released. It is not commonly included in OS distributions yet. The currently available compilers have special namespaces for auxilliary packages like boost and TRL. Much of that functionality is part of the new standard. We are not ready to switch yet, but this is coming down the pike. Elliott is especially interested in the use of shared pointers, which implement a form of garbage collection.
Review of minutes from the last meeting
We reviewed the minutes from the April 4th meeting.
- Sascha Somov had an issue with the new rad-hard-free FCAL that is in the simulation. He was using and old version of the code with new calibration constants with non-optimal results. Mark created an older version of the calibration constants for his use.
- Simon fixed a problem where not all of the energy deposited in the TOF was added into the hit energy. This was causing spurious inefficiency in the TOF.
calorimeters
physcis meeting, minimum blocks needed for form cluster
make the default 1
change not made yet
richard suggested threshold change
one cluster hits with loose timing cut Will will implement
bcal meeting last week irina and andre, discussion on how to incorporate sampling fluctuations into simulation more discussion single block, not layers
tracking
fdc segment code changed ot get target z position and lentgh from xml
matt tells reason for 65 was prevent
busy events cdc track candidate purious matches between layers 1 and 5 with nothing in 3
paul working on spiraling pions, going well, code running, doing tests, problem cases dealing with them
add a dpi+ and dpi- factory for each of those for convenience
committee has been named, chair no charge yet data acquisition added mcbride, mchaus, marchand, perske with another from babar and/or cleo discussions with chair understood how much work it takes to utilitze grid need to have numbers outlines of slides have been done intro curtis, cpu requirements, mark parallel, with hall b for two hours, 40 minutes of slides anyway, another meeting next week with rolf june 7 & 8 outline of document for TDR/hand-out