[Halld-offline] Minutes, GlueX Offline Meeting, Sep. 21, '10

[Mark M. Ito]

  Find the minutes at 
http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX_Offline_Meeting%2C_September_21%2C_2010#Minutes 
and reproduced as text below.

GlueX Offline Meeting, September 21, 2010

Minutes

    JLab: Hovanes Egiyan, Mark Ito (chair), Yi Qiang, Dmitry Romanov, Simon
    Taylor, Elliott Wolin, Beni Zihlmann

    The meeting was called to order at 2:04 pm EDT.

Announcements

      * New release: [28]sim-recon-2010-08-26. Mark announced this
        yesterday. The code is now a month old.
      * [29]64-bit ROOT on CUE. Mark switched the official version. The old
        one was broken.
      * Kalman Filter Talk: Simon will give a talk at an upcoming CLAS12
        meeting on his work with the Kalman filter and speeding-up
        tracking.
      * Writing out error matrices to an HDDM file. David has implemented
        the writing of error matrices from track fits. Working on reading
        them in is in progress.
      * 64-bit Linux root exploit. Beni gave us a heads-up about [30]this
        bug in the Linux kernel.


Review of minutes from the last meeting

    We looked at the [32]minutes from the August 24 meeting. No comments of
    note.

Calibration Database

    We had two talks on the subject, with lots and lots of discussion.
      * Mark introduced the current thinking on the design of the database
        tables. Slides included:
          1. General comments, databases and times
          2. Diagram of tables and their relations
          3. Descriptions of individual tables
          4. Logic of the tables
          5. Constant types
          6. Directories
           + See [34]his slides for details.
      * Dmitry discussed several issues with implementing the design.
          1. Overall design architecture
          2. MySQL C API usage/comments
          3. ROOT DB Framework/Examples
          4. TSQLStatement example
          5. Discussion of use of ROOT framework
          6. Other C++ DB Frameworks
          7. Data "blobs" and performance
          8. Supporting the JANA interface
          9. Type consistency
         10. Discussion of constant sets with mixed data types
         11. Role of stored procedures
         12. Interaction with other (non-C++) languages
           + See [35]his slides for details.


Action Item Review

    We did not get the the review of action items. The links are reproduced
    here for reference.
      * [37]Resolved issues
      * [38]Outstanding issues

    The meeting was adjourned at 4:35 pm EDT.

    Retrieved from
    
"http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX_Offline_Meeting%2C_September_21%2C_2010"

References

   28. https://halldsvn.jlab.org/repos/tags/sim-recon-2010-08-26/RELEASE
   29. 
https://mailman.jlab.org/pipermail/halld-offline/2010-September/000368.html
   30. 
http://linux.slashdot.org/story/10/09/20/0217204/Linux-Kernel-Exploit-Busily-Rooting-64-Bit-Machines
   32. 
http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX_Offline_Meeting%2C_August_24%2C_2010#Minutes
   34. 
http://argus.phys.uregina.ca/cgi-bin/public/DocDB/ShowDocument?docid=1607
   35. https://halldweb1.jlab.org/talks/2010-09/CCDB_design.pptx
   37. http://tinyurl.com/2beqwlk
   38. http://tinyurl.com/25g8af6