GlueX Software Meeting, January 5, 2021

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GlueX Software Meeting
Tuesday, January 5, 2021
3:00 pm EST
BlueJeans: 968 592 007

Agenda

  1. Announcements
    1. New version set: version_4.33.0.xml
    2. New version of halld_sim, 4.26.0, and corresponding recon version sets
    3. Tape Library Problem Status
  2. Review of Minutes from the Last Software Meeting (all)
  3. Minutes from the Last HDGeant4 Meeting (all)
  4. Report from Meeting on Reconstruction on the Grid
  5. Issue with reconstruction test: [1] (Alex)
  6. Review of recent issues and pull requests:
    1. halld_recon
    2. halld_sim
    3. CCDB
    4. RCDB
    5. MCwrapper
  7. Review of recent discussion on the GlueX Software Help List (all)
  8. Action Item Review (all)

Minutes

Present: Alex Austregesilo, Thomas Britton, Sean Dobbs, Sergey Furletov, Mark Ito (chair), Naomi Jarvis, David Lawrence, Simon Taylor, Nilanga Wickramaarachchi

There is a recording of this meeting. Log into the BlueJeans site first to gain access (use your JLab credentials).

Announcements

  1. New version set: version_4.33.0.xml. An version set with update releases of halld_recon, halld_sim, and hdgeant4.
  2. New version of halld_sim, 4.26.0, and corresponding recon version sets. An update release of halld_sim with changes to the MC_GEN event generator.
  3. Tape Library Problem Status Mark went over information he received from Bryan Hess before the break. Please see the link for a description of the status at that time.

Review of Minutes from the Last Software Meeting

We went over the minutes from December 8 without significant comment.

Minutes from the Last HDGeant4 Meeting

We went over the minutes from December 15 without significant comment.

Report from Meeting on Reconstruction on the Grid

Mark gave a summary of the meeting held on December 21 to discuss doing reconstruction on the OSG. In attendance at that meeting were Nathan Baltzell, Thomas Britton, Edgar Farjado, Bryan Hess, Igal Jaegle, Richard Jones, Zisis Papandreou, Maurizio Ungaro, and MMI. Most of the meeting was taken up with Richard explaining the scheme he is using for a pilot system he is running out of UConn. [Added in press: Richard gave a talk at the January 6 Production and Analysis meeting that described the system. Please see this talk for details.

Richard will be giving a talk tomorrow at a meeting that Edgar attends with OSG and the XROOTD team. He will explain his system and solicit feedback from those groups.

Issue with reconstruction test

Alex introduced a problem he has seen where the reconstructions tests are running very slowly, as if only one working thread is running when many are requested. He showed a plot of the historical processing rate of the jobs going back about four years. He is referring to the fall-off seen in the last few iterations.

[Added in press: this effect may be due to a change in the nightly builds that Mark put in. He had started building with profiling information included (the -p switch). That has now been removed. We will see if the reversion to the old configuration restores the processing rate.]

Review of recent issues and pull requests

Richard has been working on reproducibility issues when running the standard reconstruction job. See Issue #492: Repeated runs not giving the same results.

Action Items

  1. Ask the Computer Center about staging the start of jobs in time. (Mark)
  2. Make sure that the automatic tests of HDGeant4 pull requests have been fully implemented. (Mark, Sean)
  3. Finish conversion of halld_recon to use JANA2. (Nathan)
  4. Ping Dmitry on CCDB Issue #68. (Mark)
  5. Remind Ashley about her problematic cache files. (Mark)
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