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Meeting ID: 293724745

(back to the list of all DMLT meeting minutes)


10:00am PT



DMLT Meeting Goals

  • Weekly meeting to keep the DM leadership team coordinated, informed, and in agreement on the vision, priorities, and challenges facing DM construction, including surfacing and resolving issues and ambiguities needing our attention. The goal of this meeting is to provide information and decisions that help each one of us better direct our own (or our team's) activities.

Discussion Items

Guidelines: Propose items in line with the meeting rationale (see above); include as much information in the agenda notes; summarize, don't go into details while on the call; maximize time available for discussion. 

Begin Meeting at 10:02 PT



DM Org Chart UpdatesJohn Swinbank


Further discussion of these changes at next week's F2F.

DM Review in JulyJohn Swinbank

Details on the 2017 NSF/DOE DM Review page. No changes to that agenda since last week. Comments/suggests/corrections to Wil O'Mullane.

May DMLT F2FJohn Swinbank

Next week. Details here.

Focus on preparation for DM review. Topics listed on the meeting page, with requests for slides from:

Please feel free to add further suggestions.

Product TreeJohn Swinbank

Current status of the Product Tree.

Homework for the DMLT F2F: come armed with suggestions for updates/changes to that tree. In particular, look for products that may fall between gaps at the interfaces between teams (e.g. persistence framework, obs package for your favourite camera...).

Overdue RFCs

RFCs with "Planned end" past "now".

Key Summary T Status

  • It was agreed to postpone RFC-305 - Getting issue details... STATUS until the end of the month at the request of Frossie Economou.
  • There was some discussion on RFC-308 - Getting issue details... STATUS and it was agreed that the RFC should be adopted.
  • The end date for RFC-280 - Getting issue details... STATUS was moved at the request of Jim Bosch.
  • Fritz Mueller reported that he is discussing RFC-331 - Getting issue details... STATUS with Fabio Hernandez.
  • There was a discussion of RFC-333 - Getting issue details... STATUS resulting in some updates to the ticket. We all agreed that consistent usage is a good idea although there was some confusion as to whether DPDD and cat were compliant.
  • RFC-326 - Getting issue details... STATUS will be adopted pending a clarification of the triggered work required.
  • The end date RFC-243 - Getting issue details... STATUS has been moved to reflect the ongoing work on verification and validation planning which should result in a concrete proposal for this work.
Outstanding DMLT actions

See links and action item report below.

Change Control Board report

Change requests of interest to DM

  • Mario Juric commented on LCR-943 and would like some minor modifications made to LSE-63 before accepting it.
  • LCR-908 was discussed. We clarified what work was needed before we could push the LCR to a vote.
  • Tim Jenness Create a DM RFC to make the work required for LCR-908 more visible.   RFC-336 - Getting issue details... STATUS
DMLT Travel & Availability This Week

Wil O'Mullane - at SLAC Monday thru Wed;

Matters arising
LSST:UK meeting

Mario Juric gave a brief verbal report; will distribute a written summary by mail shortly.

End Meeting at 10:55 PT

Past action items

Recently created open actions (from the ~previous two DMLT meetings):

DescriptionDue dateAssigneeTask appears on
  • Colin Slater — Augment LDM-153 to provide a description of the semantics of NULL, NaN, inf, and other database vocabulary.  
06 Jul 2020Colin SlaterDM Leadership Team Virtual Face-to-Face Meeting, 2020-05-12/14
  • Fritz Mueller — Draft an technote describing operational procedures for database ingest.  
03 Aug 2020Fritz MuellerDM Leadership Team Virtual Face-to-Face Meeting, 2020-05-12/14
  • Fritz Mueller — engage with the LDF and, as necessary, AP team to best understand the data structures required for the APDB.  
06 Jul 2020Fritz MuellerDM Leadership Team Virtual Face-to-Face Meeting, 2020-05-12/14
  • Gregory Dubois-Felsmann  — update the Science Platform design documentation to reflect that data access services should be tested with PyVO.  
01 Jul 2020Gregory Dubois-FelsmannDM Leadership Team Virtual Face-to-Face Meeting, 2020-05-12/14
29 Jun 2020John SwinbankDMLT Meeting - 2020-06-22
29 Jun 2020John SwinbankDMLT Meeting - 2020-06-22
  • John Swinbank — produce milestone burndown chart, etc, for DM slides for JSR2020.  
29 Jun 2020John SwinbankDMLT Meeting - 2020-06-22
  • Kian-Tat Lim  & Michelle Butler  — propose a design and schedule for deploying a rapid processing system at the LDF.  
29 May 2020Kian-Tat LimDMLT Meeting - 2020-03-02
  • Michelle Butler  & Gregory Dubois-Felsmann  — identify existing requirements, or suggest new requirements, for a user-facing ”bulk-download“ service (but not under that name).  
05 Jun 2020Michelle ButlerDM Leadership Team Virtual Face-to-Face Meeting, 2020-02-25 to 27
06 Jul 2020Robert GruendlDM Leadership Team Virtual Face-to-Face Meeting, 2020-05-12/14