Core Minutes 9/30/2003  

Present:   Ursula Berthon,  Toby Burnett, James Chiang,   Navid Golpayegani, Heather Kelly, Michael Kuss, Matt Langston,  Leon Rochester,  Sean Robinson, Steve Ritz, Bill Atwood, Alex Schlessinger, Traudl Hansl-Kozenecka

See Toby's agenda. My apologies, I am not a good note taker, or minutes writer

• AcdRecon issue (Bill Atwood)
  Bill found a serious issue with the variable AcdActiveDist, in that the wrong dimensions of the tiles were used for calculating this quantity for two of the sides. This did not have a big effect on background rejection, since AcdDOCA took up the slack in the creation of the trees. He will check in his fix.

• Definition of McEnergy (Bill)
  This quantity is supposed to be the kinetic energy, but is set to the total energy. Bill will fix this as well.

• DC1 status

  • Richard's notes were not really discussed, put here for completeness.
  • Classification Trees: Toby discussed the status of the new tail suppression and background rejection trees, presented by Bill Atwood in Rome. See his summary. Basically, all the infrastructure to port the trees to the Gleam environment has been done, but not tested.
  • Pruning: Bill has a new set of  trees that he wants to use for pruning background runs, but this needs to be translated as above. Toby has not much time now, but will look at it. [Ed: it is impossible on the short term.]
  • Onboard Filter. This could be used for pruning, but is now very inefficient for gammas. Steve claimed that Navid and David Wren have found a problem, and that a new version could be ready by the end of the week.
  • Exposure: Toby presented a summary of how pointing/exposure information is sent to the tuple.
  • Timing prediction. Toby  presented an analysis by Theodore Hierath, predicting that 350 CPU weeks would be required, assuming that the Linux environment is equivalent to the Athlon XP 1800+ system the tests were run on, and that Geant4 is build with optimization. [Alex confirmed that the Linux build at SLAC does not have optimization, promised to rebuild it.]
• OPUS: (Alex) It will be ready in a few days for serious tests.
• Release Issues
  • Install area: Toby discussed the new scheme in CMT, which should simplify installation, but has no one to work on it. [Subsequent note from Traudl: she is testing this, but currently does not get header files]
  • gcc 3.2 and binary distribution  [Alex] We would like to use a compiler (3.2) and libraries consistent with the Red Hat 9 for distribution, but the SLAC version of gcc 3.2 has the wrong glibc. This could be fixed by installing our own compiler and glibc, which Alex will consider. [Ed: isn't this the sort of thing that SCS is supposed to help us with?]
    [Note from Traudl: SLAC has RH 9 installed on noric-new]
  • Documentation [Navid] This has been submitted to Richard.
  • Windows nightly builds [Alex] He estimates that it is 90% done, but on hold due to priority of OPUS. 
• Action items:  not reviewed

  Action Items 

• Document effect of MC pruning options (Riccardo) (8/5/2003) It's documented in the code; Tracy will look into putting the information in a more accessible place. (9/2/2003)
• Reorganize RootAnalysis package so structure is more standard.(05/13/03)
• Write up, and perhaps present at a future meeting, hints on debugging. (02/18/03)   Linux document exists, needs to be linked in somewhere. Some combination of Toby and Tracy will provide something for Windows.(7/22/03) 
• Overhaul documentation altogether by about November (Heather and ??) (9/2/2003)
• Resolve calibration/timestamp issue. (11/20/02) Online folk have not yet thought about putting timestamp information into EM data, but, thanks to Richard's inquiry, may now do so. (2/25/03) We can probably live without a realistic system for EM, but we will put it on the agenda for the DC1 workshop.(5/6/03) At the DC1 Workshop Steve Ritz  promised to find an authoritative reference for timestamp format and pass it on. (7/17/03) Now that events have "real" timestamps, Joanne needs to reassess situation with Calibration (9/2/2003)
• We need a web page on the workings of the Release Manager (5/6/03) In progress (Navid) (9/2/2003)

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T Burnett Last Modified: 01-Jun-2010 15:47:15 -0700