(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!
- LSST Change Request database
- Query for change requests originated by DM (note that this will not capture all the requests in the table below)
- LSST Change Control Process, LPM-19
|LCR||Title||State||Documents Affected||Summary and comments||Related Issues||CCB meeting for decision|
|LCR-1578||DM-10 Delay DM Portal Development|
|Implements Portal descope DM-10. Some details in DMTN-096.|
|LCR-1565||Correction to LCR-1403 Implementation|
|See original LCR below.|
|LCR-1563||Update Identity Management Concept of Operations|
|LSE-279||Adding LDAP group naming conventions for LSP/DAC access rights.|
|LCR-1554||Correct flowdown of residual ellipticity correlation requirements to LSR and OSS|
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.
|LCR-1553||Update LSE-239: Base Facility Data Center Design Requirements|
|LSE-239||Primarily updates intended to assist the verification process.|
|LCR-1503||Parallelize Camera Reverification on LSSTCam and ComCam on Telescope|
|LCR-1494||Add LSE-400 as an ICD for Header Service|
|LSE-400, LDM-638||Promote Header Service requirements to system level, in effect.|
|LCR-1478||Remote Monitoring of System Operations|
|OSS (LSE-30)||Clarify and limit remote monitoring expectations with a new OSS requirement.|
|LCR-1473||Update LPM-19 Change Control Process|
|LPM-19||Limit membership of CCB, clarify voting process.|
Additional OSS Requirements Flowdown to LSE-61
|LSE-61||Flow down OSS provenance requirements (OSS-REQ-0172, OSS-REQ-0122) and reproducibility requirement (OSS-REQ-123) to additional DM requirements|
|Update LSE-61 DMS-REQ-0274 Re: Alert Packet DIASource History Retention|
|LSE-61||Update 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-1459||Updates to the Data Products Definition Document, LSE-163|
|LCR-1426||Refine LSE-68 DAQ-DM interface|
|LSE-68||Refine interface with regard to image naming, metadata, units, and events.|
|LCR-1425||Modify DMS requirements to include creation and display of HiPS and MOC data|
|LSE-61, then consequentially LDM-151, LDM-554, and the Sizing Model|
|LCR-1424||Define Image Naming Convention|
|LSE-30, LSE-71, LSE-72, LSE-62||Specify the identifiers to be applied to image data at the time of acquisition and ingest to DM.|
|LCR-1420||Update LSE-140 including LCR-733|
|LSE-140||This 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.|
|LSE-30||This 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."|
|LCR-1403||Update Base and Long-Haul Network Activities|
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-1395||Proposed Data Rights Policy Document LPM-261|
|LPM-261||Codifies a proposed data rights and data access policy. Will require SAC review and agency approval.|
|LCR-1392||Restore requirement to OSS from LSE-369 scheduler requirements|
|LSE-30||Add OSS-REQ-0378 back to OSS so that DM tracing will work correctly.||LCR-899|
|LCR-1375||Update Base Data Center IT Installation and Configuration Activities|
APPROVAL PENDING NSF
Add Base Data Center activities in PMCS
LCR-1367 folded into final version, which required going for NSF approval.
|LCR-1367||Change DLP-533 Milestone and Predecessors|
|"Denied" but in practice folded into LCR-1375.|
|LCR-1364||Updated LSE-131 (EPO/DM ICD)|
|LSE-131||Mainly reduction of scope.|
|LCR-1353||Reorganization of Early Integration Activities|
|PMCS||Clarification and augmentation of the list of planned cross-subsystem early integration activities.|
|LCR-1348||New Reference Simulated Survey, baseline2018a|
|LCR-1344||Add Performance Metrics to|
|LSE-61||Add database and image access requirements and ability to calculate science KPMs.|
|LCR-1343||Revisions to LSE-239 Base Data Center Requirements|
|LCR-1332||Update LSE-30 (OSS) to Better Define OSS-REQ-0164|
|LSE-30||Improves and modernizes the language concerning the definition of completeness and reliability tests for DM.|
|LCR-1309||Update DM Documentation Regarding Special Programs|
|LSE-29, LSE-30, LSE-61|
|LSE-29||Clarify the requirement concerning the saving of Observatory engineering data and the like.|
|LCR-1243||Update LSE-239 Base Data Center Requirements|
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-1238||Implement DM and OSS part of LCR-786|
|LCR-1230||Update to LSE-75|
|LSE-75||Defining feedback for Active Optics and guider. KTL rewording with more specifics after discussion with Sandrine.|
|LCR-1214||Clarify DM's Level 1, 2, and 3 Terminology for the Science Community|
|LSE-163, LPM-231||Defines a new language for the three categories of data products, replacing Level 1, Level 2, and Level 3 in user-facing documentation.|
|LCR-1203||Searchable - Interactive Nightly Reports|
|Need to determine what DM will need to do to meet this requirement.|
|LCR-1154||Stand Up Data Access Rights Working Group - Put LPM-221 under Change Control|
|LCR-1070||DM Milestones for Base LAN and Summit Network|
|LCR-1068||Revised Commissioning Plan LSE-79|
|LCR-1065||Date Update for the DM/EPO ICD Phase 3 Milestone|
|LCR-1064||Add Priorities to LSE-61|
|LCR-1048||Update Summit Network Installation Schedule|
|LCR-1034||Auxiliary Telescope Spectrograph Instrument and Detector Schedule and Cost Update|
Updates the schedule and cost of the procurement of the Auxiliary Telescope Spectrograph Instrument. Details of the change are not yet available ().
|LCR-1024||Tie LSE-163 into OSS|
|LSE-30 (OSS); others indirectly, LSE-61||Resolves 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-1021||Adjust Dates for DWDM Equipment Installation|
|PMCS||Notes ~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-1018||Follow up to New Camera Image Types (LCR-773) to flow down requirements to subsystem specs and ICDs|
|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-1013||Place the LSST Science Platform Vision Document under Change Control|
|LCR-1006||Update DM-OCS ICD, LSE-72, to reflect DM design changes and to match recent LSE-70/LSE-209|
|LSE-72, LDM-230||Updates LSE-72 to match current design work. Incorporates changes from LCR-780 and LCR-888.|
|LCR-1005||LSE-209 Software Component Document Reformat and Reqs Refresh|
|LSE-209, likely LSE-72||This 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-1004||Withdraw LSE-77, "Infrastructure Interfaces Between Data Management and the Base Facility"|
|LSE-77, possibly LSE-239||In 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-983||Integrate DM and Camera Data Systems Early|
|PMCS, possibly ICDs, LSE-61||Perform 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-974||Update Network Requirements in LSE-61|
|LSE-61||One new requirements, modifications to 3 others.|
|LCR-964||Summit Computer Room Requirements Document|
|LSE-299 (new)||Consolidates all planned compute hardware needed on the Summit (except what is actually in the domes).|
|LCR-963||Summit - Base ITC Design Document|
Product of Jeff Kantor's Summit-Base Tiger Team
Touches on almost all DM's interfaces with the other systems.
|LCR-962||Flowdown LSE-163 (DPDD) to LSE-61 (DMSR)|
|LSE-163, LSE-61||Includes a handful of unrelated requirements changes/additions. Some text updates to DPDD.|
|LCR-952||DM Management and Science Staffing|
|Assigns Wil O'Mullane as CAM for 02C.01.01 and 02C.02.*, and adds budget to support DM Science Analysts at UW.|
Minor updates to LSE-63
|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-924||Duplicate LSR Data|
Performance Metrics in OSS for DM Flow Down
|LCR-921||DM to Provide Service for Publishing Predicted Visit Sequence|
|LCR-908||Keep all Data Releases loaded in databases|
|LSE-30 (OSS) and many subordinate documents||Adopt 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-325Getting issue details... STATUS|
|LCR-900||DM S17 Mid Cycle Replan|
|(PMCS)||Implement S17b plans for NCSA, SQuaRE, and AP with some small tweaks to other subsystems.|
|LCR-899||Scheduler Requirements Control|
|LTS-347, possibly LSE-62||Promote the scheduler requirements in LTS-347 to project-level change control, moving them to an LSE-* document.|
|LCR-888||Proposed Meta-data header client for LSST images|
|LSE-72, LDM-230, probably numerous others||Proposes 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-851||Update to LSE-151|
|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.|
Update LSE-78 LSST Observatory Network Design
|LSE-78||LCR-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.||2017-03-05 email vote|
|LCR-838||Auxiliary Telescope Scheduler|
|LTS-187 (draft: SPT-372)|
|LCR-836||Typographic correction to LSE-69 to match LSE-130|
|LSE-69||- DM-9336Getting issue details... STATUS|
|LCR-835||Camera Heterogeneous Sensor Focal Plane|
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.
2017-03-22 (status check only)
Updates to DM/EPO interface requirements (LSE-131)
See substantive discussion in the DM Leadership Team Meeting 2017-03-20.
2017-03-22 (vote deferred)
|LCR-788||Transfer Task Framework from 02C.07 to 02C.06||FULLY IMPLEMENTED||(PMCS)||Moves the |
|LCR-787||Commissioning Re-Plan 2016|
|LSE-79||See also the February 2017 Commissioning Review.|
Awaiting the report of the review committee.
|LCR-786||Eliminate Base Network Outage Buffer; Expand Summit Camera Image Buffer|
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-785||Observatory Operations Server|
|Unclear; may require a new ICD. Would also affect DM design documents.|
|LCR-783||Commissioning Cluster Services|
|Appears in DM design documents|
|LCR-782||Additional OCS Driven Services for Archive Center Access|
|LSE-72, possibly LSE-140||Provide 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-780||Eliminate Engineering & Facilites Database Copies in Offline Archive Centers|
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-773||New Camera Image Types|
|LSE-30 (OSS)||Adds requirements for a pinhole filter and for the capability to take filterless images.|
|LCR-747||Unified LSST Authentication and Authorization Services|
|LSE-279||Provides unified authentication and authorization technical services to assure authorized individuals access LSST services and systems.|
|LCR-733||LSST CCD, CCS, and DAQ for the Auxiliary Telescope Spectrograph||FULLY IMPLEMENTED||LSE-140 and many others||Requires 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-687||Alternate Standard Visit with 30s single exposure|
|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-586||Update LSE-209 Software to OCS ICD|
|LSE-209||A 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-581||Calibration Hardware Requirements Update|
|LSE-30 (OSS), LSE-60, LSE-140 (DM ICD)|
|LCR-458||Support for "Deep Drilling" observing scenario|