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(This page should ultimately be replaced by a JIRA query against the envisioned future JIRA reimplementation of the change request database, using labels to represent "DM is interested in this".  At the moment it is manually maintained.)

This page is manually maintained (primarily by Gregory Dubois-Felsmann and Tim Jenness).  It contains change requests originated by DM as well as ones from or affecting other LSST subsystems which the editors believe will be of interest to DM staff.  It also omits certain manifestly DM-related change requests that are primarily concerned with PMCS technicalities and will not be subject to full CCB action.  These change requests are always available by querying the database for DM-originated requests.  The editors welcome comments on this policy!

We are not generally including LCRs concerning matters like budget adjustments and routine milestone changes.

Principal references:

LCRTitleStateDocuments AffectedSummary and commentsRelated Issues
LCR-1854Rectify DM Science Budget

LCR ASSIGNED

PMCS"Science staff are increasing under 2C.02.02 - the verification scope in 2C.09.02 is moving into science."
LCR-1843OSS Corrections

LCR ASSIGNED

LSE-30 (OSS)(Primarily) typographical corrections to OSS requirements arising from the analysis of the document to develop well-defined verifications.
LCR-1809Update of Master Security Policy

STUDIED

LPM-121"... require the selection of specific security controls for each subsystem's computational resources. Additionally, the master security plan now requires the implementation of a small set of baseline controls for all LSST systems unless sufficient justification has been made and a variance has been granted (or unless prohibited by a site's own security policies). ..."

RFC-326 - Getting issue details... STATUS

LCR-1788Modify LSE-68 to Reflect Actual Interface

APPROVAL PENDING

LSE-68"The DAQ API delivers pixel data in an in-memory representation different from the ICD.  This LCR changes the ICD to match the API, as it is considered infeasible to change the API to match the ICD."
LCR-1728Update Science Platform Vision Document LSE-319 to Current Design

APPROVAL PENDING

LSE-319Updating "LSE-319 to better match the current state of the LSP design and nomenclature. The major changes are to more explicitly describe what is meant by 'next-to-data' processing and to confirm the VO-orientation of the LSP interface design."
LCR-1711Update Summit and Base IT and Networks Plan

FULLY IMPLEMENTED

(PMCS)

LCR-1703Fix Conflicting LSR (LSE-29) Requirements

STUDIED

LSE-29Remove normative text which refers to the use of snap differencing for cosmic ray rejection, as it is in conflict with the existing requirement to support the Alternate Standard Visit (1x30s).
LCR-1664Specify Scientific Visualization Coordinate System for Camera Data

APPROVED

LSE-30, LSE-349 (new)Adopt LSE-349, "Defining the Transformation Between Camera Engineering Coordinates and Camera Data Visualization Coordinates", as a baseline, and insert reference to it into the OSS (LSE-30).
LCR-1578DM-10 Delay DM Portal Development

FULLY IMPLEMENTED


Implements Portal descope DM-10. Some details in DMTN-096.

PST-62 - Getting issue details... STATUS

LCR-1565Correction to LCR-1403 Implementation

FULLY IMPLEMENTED


See original LCR below.
LCR-1563Update Identity Management Concept of Operations

APPROVAL PENDING

LSE-279Adding LDAP group naming conventions for LSP/DAC access rights.
LCR-1554Correct flowdown of residual ellipticity correlation requirements to LSR and OSS

PENDING REFINEMENT

LSE-29, LSE-30

Update: The problem was found to originate in the flowdown from the SRD to the LSR. The LCR has been modified with new language for both the LSR and OSS that, finally, correctly implements the SRD specification. Outside the scope of the LCR, the DM-SST is researching whether the original SRD requirement still properly supports the needs of weak lensing science.


OSS-REQ-0234 (10-year Ellipticity Residuals) and OSS-REQ-0390 () are almost duplicates and clearly redundant. One should be removed. There is also a parent requirement, OSS-REQ-0389 () that is not very useful.

There are also indications that the flowdown from the SRD to the LSR and OSS was not done correctly; Jim Bosch and Gregory Dubois-Felsmann are investigating.


LCR-1553Update LSE-239: Base Facility Data Center Design Requirements

APPROVAL PENDING

LSE-239Primarily updates intended to assist the verification process.
LCR-1503Parallelize Camera Reverification on LSSTCam and ComCam on Telescope

APPROVED

(PMCS)Parallelize on-sky data collection with ComCam with "white room" reverification of the full Camera on-Summit.
LCR-1494Add LSE-400 as an ICD for Header Service

STUDIED

LSE-400, LDM-638Promote Header Service requirements to system level, in effect.
LCR-1478Remote Monitoring of System Operations

APPROVED

OSS (LSE-30)Clarify and limit remote monitoring expectations with a new OSS requirement.
LCR-1473Update LPM-19 Change Control Process

FULLY IMPLEMENTED

LPM-19Limit membership of CCB, clarify voting process.
LCR-1465

Additional OSS Requirements Flowdown to LSE-61

FULLY IMPLEMENTED

LSE-61Flow down OSS provenance requirements (OSS-REQ-0172, OSS-REQ-0122) and reproducibility requirement (OSS-REQ-123) to additional DM requirements

DM-14067 - Getting issue details... STATUS

LCR-1463

Update LSE-61 DMS-REQ-0274 Re: Alert Packet DIASource History Retention

FULLY IMPLEMENTED

LSE-61Update requirement DMS-REQ-0274 to be in sync with the DPDD (LSE-163) to indicate that only 12 months of DIASource history will be included in the alert packets.
LCR-1459Updates to the Data Products Definition Document, LSE-163

FULLY IMPLEMENTED

LSE-163

DM-11247 - Getting issue details... STATUS

DM-15566 - Getting issue details... STATUS

DM-12129 - Getting issue details... STATUS

LCR-1426Refine LSE-68 DAQ-DM interface

APPROVED

LSE-68Refine interface with regard to image naming, metadata, units, and events.
LCR-1425Modify DMS requirements to include creation and display of HiPS and MOC data

FULLY IMPLEMENTED

LSE-61, then consequentially LDM-151, LDM-554, and the Sizing Model

Implements RFC-441 - Getting issue details... STATUS .


LCR-1424Define Image Naming Convention

APPROVED

LSE-30, LSE-71, LSE-72, LSE-62Specify the identifiers to be applied to image data at the time of acquisition and ingest to DM.
LCR-1420Update LSE-140 including LCR-733

APPROVED

LSE-140This LCR applies LCR-733 to LSE-140 and corrects some other minor issues.  It does not attempt to fully define the telemetry items expected from the auxiliary instrumentation; that will be left for a later LCR.
LCR-1419Remote Operability

FULLY IMPLEMENTED

LSE-30, LSE-62

LCR-1405Rewrite OSS-REQ-0161

APPROVED

LSE-30This is the "Deep Detection and Measurement Quality" requirement. It is argued that it is "both unhelpful to scientists and awkward for DM to implement now" and "asking for something DM is not planning to deliver because it's not actually something anyone wants."

LIT-94 - Getting issue details... STATUS

LCR-1403Update Base and Long-Haul Network Activities

FULLY IMPLEMENTED

NA

The Base Network plan has been delayed relative to the baseline due to the updated schedule for construction and occupancy of the Base Facility. This LCR reflects the updated dates.

The US Network plan has been delayed while we coordinated with ESnet for dedicated 2 x 100 Gbps links between Atlanta and Chicago. The ESnet links provide additional path diversity and guaranteed latency for prompt processing over leased service from internet2. This coordination is documented in a request document and technical requirements document, which when finalized will be posted in docushare. The activities and dates in this LCR reflect the implementation plan and schedule for the ESnet links.


LCR-1395Proposed Data Rights Policy Document LPM-261

STUDIED

LPM-261Codifies a proposed data rights and data access policy. Will require SAC review and agency approval.
LCR-1392Restore requirement to OSS from LSE-369 scheduler requirements

PENDING

LSE-30Add OSS-REQ-0378 back to OSS so that DM tracing will work correctly.LCR-899
LCR-1375Update Base Data Center IT Installation and Configuration Activities

FULLY IMPLEMENTED

NA

Add Base Data Center activities in PMCS

LCR-1367 folded into final version, which required going for NSF approval.


LCR-1367Change DLP-533 Milestone and Predecessors

DENIED


"Denied" but in practice folded into LCR-1375.
LCR-1364Updated LSE-131 (EPO/DM ICD)

FULLY IMPLEMENTED

LSE-131Mainly reduction of scope.
LCR-1353Reorganization of Early Integration Activities

FULLY IMPLEMENTED

PMCSClarification and augmentation of the list of planned cross-subsystem early integration activities.
LCR-1348New Reference Simulated Survey, baseline2018a

FULLY IMPLEMENTED




LCR-1344Add Performance Metrics to
LSE-61

FULLY IMPLEMENTED

LSE-61Add database and image access requirements and ability to calculate science KPMs.
LCR-1343Revisions to LSE-239 Base Data Center Requirements

FULLY IMPLEMENTED

LSE-239

LCR-1332Update LSE-30 (OSS) to Better Define OSS-REQ-0164

FULLY IMPLEMENTED

LSE-30Improves and modernizes the language concerning the definition of completeness and reliability tests for DM.

LIT-388 - Getting issue details... STATUS

LCR-1309Update DM Documentation Regarding Special Programs

FULLY IMPLEMENTED

LSE-29, LSE-30, LSE-61

LCR-1302LSR-REQ-0034 Clarification

FULLY IMPLEMENTED

LSE-29Clarify the requirement concerning the saving of Observatory engineering data and the like.

LIT-100 - Getting issue details... STATUS

LCR-1243Update LSE-239 Base Data Center Requirements

FULLY IMPLEMENTED

LSE-239

LSE-239 was developed to provide the definition of the Base Data Center (BDC) requirements for the Base construction contracts and the BDC Information Technology and Communications (ITC) infrastructure design. Since that version, much has been learned and the requirements have been migrated into the project SySML requirements model. A new version of LSE-239 has been prepared as a document generated from Magic Draw, and has also been substantially re-organized, to more cleanly separate those sections directly applicable to the Base Facility construction contract (Sections 1 - 3), versus those more targeted at the ITC infrastructure design (Appendices I and II). Finally, as the formerly baseline Tape Library has been recommended to be replaced in the BDC ITC design baseline (LCR-781 and follow-on), requirements related to the Tape Library have been deprecated into Appendix III.


LCR-1238Implement DM and OSS part of LCR-786

FULLY IMPLEMENTED

LSE-61, LSE-30

LCR-1230Update to LSE-75

FULLY IMPLEMENTED

LSE-75Defining feedback for Active Optics and guider. KTL rewording with more specifics after discussion with Sandrine.
LCR-1214Clarify DM's Level 1, 2, and 3 Terminology for the Science Community

FULLY IMPLEMENTED

LSE-163, LPM-231Defines a new language for the three categories of data products, replacing Level 1, Level 2, and Level 3 in user-facing documentation.
LCR-1203Searchable - Interactive Nightly Reports

APPROVED


Need to determine what DM will need to do to meet this requirement.
LCR-1154Stand Up Data Access Rights Working Group - Put LPM-221 under Change Control

FULLY IMPLEMENTED

LPM-221

LCR-1070DM Milestones for Base LAN and Summit Network

FULLY IMPLEMENTED




LCR-1068Revised Commissioning Plan LSE-79

FULLY IMPLEMENTED

LSE-79

LCR-1065Date Update for the DM/EPO ICD Phase 3 Milestone

FULLY IMPLEMENTED




LCR-1064Add Priorities to LSE-61

FULLY IMPLEMENTED

LSE-61

Add priorities to the baselined version of the document that are already part of the MagicDraw model (added as part of DM-10647 - Getting issue details... STATUS )


LCR-1048Update Summit Network Installation Schedule

FULLY IMPLEMENTED




LCR-1034Auxiliary Telescope Spectrograph Instrument and Detector Schedule and Cost Update

FULLY IMPLEMENTED


Updates the schedule and cost of the procurement of the Auxiliary Telescope Spectrograph Instrument. Details of the change are not yet available ().


LCR-1024Tie LSE-163 into OSS

FULLY IMPLEMENTED

LSE-30 (OSS); others indirectly, LSE-61Resolves a long-running formal gap in our requirements flowdown. Makes the contents of the DPDD (LSE-163) authoritative in deriving DM-level requirements (i.e., in the DMSR, LSE-61) by stating in the OSS that the data products generated by DM shall conform to the DPDD.
LCR-1021Adjust Dates for DWDM Equipment Installation

FULLY IMPLEMENTED

PMCSNotes ~60 day delay in the installation of the Summit-Base and Base-Santiago DWDM equipment, triggered by late delivery from the equipment vendor. New schedule shows installations complete by roughly November 2017.
LCR-1018Follow up to New Camera Image Types (LCR-773) to flow down requirements to subsystem specs and ICDs

FULLY IMPLEMENTED

LSE-59, LSE-71; DM impact to be analyzed

Adds the new image types introduced by LCR-773 (New Camera Image Types) to the Camera requirements and OCS-Camera ICD. Superficially this doesn't require a response in DM-level documents; however, the exploitation of the new image types is driven by calibration requirements and so most likely they should eventually appear in DM documents.

Note that as of  LCR-773 itself is Approved but not Fully Implemented.


LCR-1013Place the LSST Science Platform Vision Document under Change Control

FULLY IMPLEMENTED

LSE-319

LCR-1006Update DM-OCS ICD, LSE-72, to reflect DM design changes and to match recent LSE-70/LSE-209

FULLY IMPLEMENTED

LSE-72, LDM-230Updates LSE-72 to match current design work. Incorporates changes from LCR-780 and LCR-888.
LCR-1005LSE-209 Software Component Document Reformat and Reqs Refresh 

REJECTED

LSE-209, likely LSE-72This is mostly a cleanup pass on a key OCS middleware definition document. The DM-to-OCS interface depends on its contents, so it's likely that some consequential changes to LSE-72 will be needed.
LCR-1004Withdraw LSE-77, "Infrastructure Interfaces Between Data Management and the Base Facility"

FULLY IMPLEMENTED

LSE-77, possibly LSE-239In 2015, the project shifted from the then-existing DM-to-T&S ICD LSE-77 to a new "Base Data Center Requirements" document, LSE-239, to capture the needs of DM for data center space at the Base. LSE-77 became effectively a dead letter in the process. This change request is intended to just clean that up.
Final result: LSE-77 has been withdrawn.

LCR-983Integrate DM and Camera Data Systems Early

FULLY IMPLEMENTED

PMCS, possibly ICDs, LSE-61Perform additional early integration activities, notably around the use of the CCOB camera test facility to generate data to be ingested into DM on a regular basis.
LCR-974Update Network Requirements in LSE-61

FULLY IMPLEMENTED

LSE-61One new requirements, modifications to 3 others.
LCR-964Summit Computer Room Requirements Document

FULLY IMPLEMENTED

LSE-299 (new)Consolidates all planned compute hardware needed on the Summit (except what is actually in the domes).
LCR-963Summit - Base ITC Design Document

FULLY IMPLEMENTED

LSE-309 (new)

Product of Jeff Kantor's Summit-Base Tiger Team

Touches on almost all DM's interfaces with the other systems.


LCR-962Flowdown LSE-163 (DPDD) to LSE-61 (DMSR)

FULLY IMPLEMENTED

LSE-163, LSE-61Includes a handful of unrelated requirements changes/additions. Some text updates to DPDD.
LCR-952DM Management and Science Staffing

FULLY IMPLEMENTED


Assigns Wil O'Mullane as CAM for 02C.01.01 and 02C.02.*, and adds budget to support DM Science Analysts at UW.
LCR-943

Minor updates to LSE-63

FULLY IMPLEMENTED

LSE-63 (Data Quality Assurance Plan)LSE-63 has not been updated since 2011. This update includes some minor modernizations based on current best practice and removes mention that we are currently in R&D phase.
LCR-924Duplicate LSR Data
Performance Metrics in OSS for DM Flow Down

FULLY IMPLEMENTED

LSE-30 (OSS)

Flows LSR-REQ-0093, LSE-REQ-0094 and LSR-REQ-0097 to OSS so that DM can include them in DMSR for verification of the performance metrics (via LIT-276 - Getting issue details... STATUS ).


LCR-921DM to Provide Service for Publishing Predicted Visit Sequence

FULLY IMPLEMENTED

LSE-61 (DMSR)

Publish telescope position and predicted schedule to the community (via LIT-215 - Getting issue details... STATUS ).


LCR-908Keep all Data Releases loaded in databases

FULLY IMPLEMENTED

LSE-30 (OSS) and many subordinate documentsAdopt the following requirement: "The LSST project shall maintain user access to the contents of all Data Releases. This facility may be provided with reduced performance and capacity for Data Releases older than the most recent one, but be qualitatively identical otherwise." in place of the current policy of maintaining access only to the two most recent data releases. RFC-325 - Getting issue details... STATUS
LCR-900DM S17 Mid Cycle Replan

FULLY IMPLEMENTED

(PMCS)Implement S17b plans for NCSA, SQuaRE, and AP with some small tweaks to other subsystems.
LCR-899Scheduler Requirements Control

FULLY IMPLEMENTED

LTS-347, possibly LSE-62Promote the scheduler requirements in LTS-347 to project-level change control, moving them to an LSE-* document.
LCR-888Proposed Meta-data header client for LSST images

FULLY IMPLEMENTED

LSE-72, LDM-230, probably numerous othersProposes that a common Summit-Base service be created that extracts all observation metadata (from published telemetry or the EFD) intended to be packaged with the image files, storing an artifact containing all this metadata as "headers" for later retrieval.Q: Does this have anything to do with the reformatted EFD database? -XW
LCR-851Update to LSE-151

FULLY IMPLEMENTED

LSE-151 "Interface Control & Compliance Management Process"Clarifies language surrounding ICDs and documents that describe or actually are the implementations of the interfaces controlled by ICD.
LCR-849

Update LSE-78 LSST Observatory Network Design

FULLY IMPLEMENTED

LSE-78LCR-849 is to make LSE-78 consistent with and refer to the Network Sizing document LDM-142.  Requested CCB if this can be voted on via the electronic voting process.  I think it is non-controversial and was discussed at some length in the DM TCT when we last updated LDM-142. It would be good to get this done, as there are a number of more significant changes to the same documents coming very soon as a consequence of Tiger Team activities.
LCR-838Auxiliary Telescope Scheduler

FULLY IMPLEMENTED

LTS-187 (draft: SPT-372)

LCR-836Typographic correction to LSE-69 to match LSE-130

FULLY IMPLEMENTED

LSE-69

This is a trivial typographic correction that was requested a long time ago in LIT-183 - Getting issue details... STATUS .

DM-9336 - Getting issue details... STATUS
LCR-835Camera Heterogeneous Sensor Focal Plane

FULLY IMPLEMENTED


Implicitly sharpens requirements on ability to determine the correct pixel geometry upon data ingest from Camera to DM. May have an implication for the generation of difference imaging templates, at the (~annual) template-creation level and/or at the nightly template-warp-instantiation level.


LCR-795

Updates to DM/EPO interface requirements (LSE-131)

FULLY IMPLEMENTED

LSE-131

See substantive discussion in the DM Leadership Team Meeting 2017-03-20.

LIT-97 - Getting issue details... STATUS

LCR-788Transfer Task Framework from 02C.07 to 02C.06FULLY IMPLEMENTED


(PMCS)Moves the Task class and a cluster of related classes and interfaces to be a responsibility of the SLAC group.
LCR-787Commissioning Re-Plan 2016

FULLY IMPLEMENTED

LSE-79See also the February 2017 Commissioning Review.
Awaiting the report of the review committee. 

LCR-786Eliminate Base Network Outage Buffer; Expand Summit Camera Image Buffer

FULLY IMPLEMENTED

Unclear

Kevin Long is awaiting guidance on what WBS element to use for the additional budget for the enlarged buffer.

The "documents affected" is "Unclear" because it has not been completely decided whether to implement this as a change to requirements or as a specification that exceed the requirement. This is a separate question both at system and at Camera level.


LCR-785Observatory Operations Server

REJECTED

Unclear; may require a new ICD. Would also affect DM design documents.

LCR-783Commissioning Cluster Services

REJECTED

Appears in DM design documents

LCR-782Additional OCS Driven Services for Archive Center Access

FULLY IMPLEMENTED

LSE-72, possibly LSE-140Provide a means for the OCS to launch predefined batch processing actions at the Archive Center. Likely to be used for, e.g., producing synthetic calibration images following the collection of the input flats, bias frames, etc.
LCR-780Eliminate Engineering & Facilites Database Copies in Offline Archive Centers

FULLY IMPLEMENTED

LSE-72, LDM-230

Requires changing EFD interface with OCS to be the ingest to the Reformatted EFD.

: discussed at an OCS-DM meeting. Further discussions planned for .


LCR-773New Camera Image Types

FULLY IMPLEMENTED

LSE-30 (OSS)Adds requirements for a pinhole filter and for the capability to take filterless images.
LCR-747Unified LSST Authentication and Authorization Services

FULLY IMPLEMENTED

LSE-279Provides unified authentication and authorization technical services to assure authorized individuals access LSST services and systems.
LCR-745Targets of Opportunity requirements

FULLY IMPLEMENTED

LSE-29 (LSR), LSE-30 (OSS), LSE-62 (OCS reqts.)Provides requirement flowdown for the need to handle target-of-opportunity observing.
LCR-733LSST CCD, CCS, and DAQ for the Auxiliary Telescope SpectrographFULLY IMPLEMENTED


LSE-140 and many othersRequires consequential changes to LSE-140 because of the change to direct spectrograph-to-DM image retrieval.

The details of the timeline of capabilities required of DM to support the spectrograph, starting 8/2018, remain under analysis. 

LCR-687Alternate Standard Visit with 30s single exposure

FULLY IMPLEMENTED

LSE-29 (LSR), LSE-30 (OSS)Requires that DM be able to handle two types of standard visits: two 15s exposures, or one 30s exposure. Somewhat vague on the question of how closely the two types of visits could be interleaved.
LCR-586Update LSE-209 Software to OCS ICD

FULLY IMPLEMENTED

LSE-209A further round of technical updates to the OCS-to-subsystem device interface. The draft already serves as the basis for the prototype and early integration work that is ongoing.
LCR-581Calibration Hardware Requirements Update

FULLY IMPLEMENTED

LSE-30 (OSS), LSE-60, LSE-140 (DM ICD)

LCR-458Support for "Deep Drilling" observing scenario

REJECTED


See LIT-325 - Getting issue details... STATUS for a task relating to unblocking this change request.

Ultimately "Rejected" as no longer germane.




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