[Halld-offline] Offline Software Meeting Minutes, June 29, 2018

Mark Ito marki at jlab.org
Fri Jun 29 16:11:04 EDT 2018


After glancing at my notes I found that I missed reporting on a couple 
of items:


      Planning for Launches

We discussed the idea of doing some semi-formal documentation of plans 
for launches mainly as a communication tool both for the collaboration 
and for computing resource providers. We should at least write down 
things that we know are upcoming acknowledging the usual schedule 
uncertainties. We agreed it was a good idea which we should discuss 
further.


      Reproducibility in Tracking Reconstruction

Beni thinks he has discovered the problem: somehow duplicate, but not 
identical, FDC pseudo-points are being fed into the tracking. Which 
point gets used can vary from one run of the program to the next. The 
source of the duplication is the next thing to investigate.

...and the HDGeant4 meeting will be at 10 am, not at 10 pm as originally 
stated...you can thank Sean for not ruining your Friday night.


On 06/29/2018 03:52 PM, Mark Ito wrote:
>
> Folks,
>
> Please find the minutes below and at
>
> https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_June_29,_2018#Minutes
>
>   -- Mark
>
> _______________________
>
>
>     GlueX Offline Meeting, June 29, 2018, Minutes
>
> Present:
>
>   * *CMU: * Naomi Jarvis
>   * *FIU: * Mahmoud Kamel
>   * *FSU: * Sean Dobbs
>   * *JLab: * Alex Austregesilo, Mark Ito (chair), David Lawrence,
>     Simon Taylor, Beni Zihlmann
>   * *W&M: * Justin Stevens
>   * *Yerevan: * Hrach Marukyan
>
> There is a recording of this meeting <https://bluejeans.com/s/Gl5u7/> 
> on the BlueJeans site. Use your JLab credentials to access it.
>
>
>       Announcements
>
>  1. Sim-Recon 2.26.0
>     <https://mailman.jlab.org/pipermail/halld-offline/2018-June/003228.html>.
>     A periodic release. See the release notes for changes from the
>     last such release.
>  2. GlueX Root Analysis 0.3
>     <https://github.com/JeffersonLab/gluex_root_analysis/releases/tag/0.3>.
>     There has not been a new release for about a year. This one was
>     overdue.
>
>
>       Review of minutes from the June 15 meeting
>
> We went over the minutes 
> <https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_June_15,_2018#Minutes>. 
>
>
>   * The Experimental Readiness Review for GlueX II was held last
>     Monday. David noted that Eugene Chudakov has already circulated
>     the preliminary report of the committee.
>   * David mentioned that we may want to revisit our estimate of the
>     amount of Monte Carlo we need. It accounts for nearly half of our
>     current projections. This is in line with what we have always
>     said, but bears re-examination.
>
>
>       Coming Computing Resources
>
> Mark flipped through Chip Watson's talk at the June 28 Round Table 
> <https://www.jlab.org/indico/event/247/session/5/contribution/14/material/slides/0.pdf>. 
>
>
> Increases to the core count on the farm coming this summer were listed 
> on slide 6:
>
>   * Current system: 3.5k cores (scaled to Broadwell)
>   * Major farm upgrade due in July: 88 dual 20 core Skylake compute
>     nodes (farm18), adds 3.5k cores (100% gain)
>   * Retiring LQCD cluster to be shared for 6 months, 250 dual 8 core
>     (2012 Sandy Bridge) compute nodes, adds 2.4k cores
>   * Size for the Fall run: 9.4k cores (up 2.7x)
>   * Note: 2.7k cores go end of life mid way through FY2019, and we might
>
> add only 1.8k new, dropping onsite capacity to 8.5k cores, still up 150%.
>
> For all of the talks presented at the Round Tables see the Indico site 
> <https://www.jlab.org/indico/event/247/>.
>
>
>       Report from the June 28 SciComp Meeting
>
> Mark and David gave the report.
>
>   * SciComp has replaced PBS with Slurm <https://slurm.schedmd.com/>
>     as the underlying batch scheduler for the LQCD cluster and are
>     looking to do the same for the Experimental Nuclear Physics (ENP)
>     cluster. We now have Auger sitting on top of PBS and SWIF sitting
>     on top of Auger. They are looking at eliminating the Auger layer.
>   * SciComp is planning on allowing LQCD jobs to run on the ENP
>     cluster at low priority. The reverse will not be allowed. Jobs
>     submitted to ENP will be able to pre-empt LQCD jobs (kill them to
>     make room if no job slots are free).
>
>
>       Missing CDC hits in recent bggen launch
>
> Alex A. reported on the problem. All CDC hits are apparently missing. 
> Cause of the problem is not known. See his presentation of the 
> evidence starting at 40:40 in the recording 
> <https://bluejeans.com/s/Gl5u7/>.
>
> We will have to re-run.
>
>
>       Splitting up Sim-Recon
>
> Mark reported that there was still some remaining work to get to a 
> production system.
>
>  1. *Environment variable changes*. Rather than HALLD_HOME for
>     sim-recon, we will have HALLD_SIM_HOME for the halld_sim
>     repository (originally gluex_sim) and HALLD_RECON_HOME for the
>     halld_recon repository (originally gluex_recon). We decided that
>     the "halld" name reflected the fact that non-GlueX experiments
>     will be using the same software.
>  2. *Preserving branches in halld_recon*. There were some details to
>     be worked out to have the branches from sim-recon transmit to
>     halld_recon.
>  3. *Removing sim pieces from gluex_recon*. This had not been done.
>     Removal necessitates changes in the build system.
>  4. *Dealing with build_scripts*. Build_scripts has not been modified
>     for the new configuration. All work so far has been in getting a
>     working build.
>
>
>       HDGeant4 Meeting
>
> At the last collaboration meeting Richard suggested having a meeting 
> dedicated to issues related to the Geant4 version of our simulation. 
> The first meeting will be Friday, July 6 at 10 pm. We will likely meet 
> bi-weekly in the slot opposite the Offline Software meetings.
>
>
>       Review of Pull Requests and Software Help Topics
>
> We went over recent pull requests 
> <https://github.com/JeffersonLab/sim-recon/pulls?q=is%3Aclosed+is%3Apr> 
> and recent discussion on the GlueX Software Help List 
> <https://groups.google.com/forum/#%21forum/gluex-software> without 
> major discussions.
>
> -- 
> Mark Ito,marki at jlab.org, (757)269-5295
>
>
> _______________________________________________
> Halld-offline mailing list
> Halld-offline at jlab.org
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-- 
Mark Ito, marki at jlab.org, (757)269-5295

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