We will be having our regular bi-weekly Infrastructure WG telecon on Monday, November 9, at 12 Noon CT.

Agenda

• TG Allocation Update
  • Current Allocation
    • 30K SUs on abe
    • 30K SUs on lincoln (nVidia Tesla GPUs)
    • Available now for immediate use
    • How to get access: contact MikeF
  • Next TG Allocation Cycle
    • Proposals due Jan15 for Apr1 allocations

• InfraWG Ticket System Update
  • InfraWG tickets moving to secure ticket system
    • Migration of existing tickets is currently underway
  •  http://jira.ncsa.uiuc.edu
  • How to get access:
    1. Go to  http://jira.ncsa.uiuc.edu and self-register
       • Very easy: Only your name and email address is needed
    2. Contact MikeF to get authorization to the LSST tickets

• Cost Sheet Update
  • Current version now v63
    •  https://www.lsstcorp.org/docushare/dsweb/Get/Document-6284/Infrastructure-Costs-v63.xls
    •  https://www.lsstcorp.org/docushare/dsweb/Get/Document-8189/CostSummaryWithBaseline-v63.xls
  • Summary of Changes
    •  LSST-1 Rename labels from "Operations" to "Operating Costs" (no cost change)
    •  LSST-2 Rename labels from "DAQ" to "DAC" (no cost change)
    •  LSST-22 Delete the WBS SUMMARY tabs (no cost change)
    •  LSST-8 Remove all references to the Stand-Alone DAC (no cost change)
    •  LSST-21 Include all (Non-Labor) Infrastructure Costs in Cost Sheet
      • Changed the "apparent baseline" and the total cost estimate equally, so the actual cost estimate did not change.
      • Now much easier and simpler to compare the cost sheet with the PMCS baseline.
  • Upcoming Changes
    •  LSST-24 Arch DPS and Base DPS: Fast Storage: Do not assume 500GB per drive as a constant into the future
    •  LSST-23 ArchAOS and BaseAOS: Slow Disk: Do not assume 1000GB per drive as a constant into the future
    •  LSST-10 Update Power & Cooling at Base Site (info already received from RonL)
    • #947 Tech Predictions tab: Should the model of capacity be 3 year step functions?
    • #973 Update Power & Cooling at ArchSite
  • Next steps with cost sheet
    • Full review each of the elements of the cost sheet (boxes of the mapping document)
      • More readable description of the formulas being used
      • Identification and documentation of assumptions
      • Identification and documentation of external data input
    • Serves two significant purposes
      • Allows for better internal reviews (validation of models and information used)
      • Provides justifications for external reviews
    • Results in an updated (or replacement of) Document-1684 and related documents ("Explanation of Cost Estimates")

• Cost Estimate for ForcedSources
  • Pending update to "lsst diskIO estimates" ( Document-1990)

• Storage Model Costs for Maintaining CSS Database Performance
  • See my analysis document attached to the email announcing this meeting
  • i.e. the cost of going to min. # spindles for CSS database storage to meet performance requirements
  • Summary of current estimates
  • Large costs associated with this - need validation from group - error in sheet? revise model? change performance requirements? alternative technologies?

• Current InfraWG Priorities
  • DC3b hardware
    • To complicate matters, a new policy for mass storage quotas is being put into effect for abe/lincoln starting Jan1: "Non-TG and Startup projects will have a default project quota of 1 TB."
  • Cost Sheet Tickets Above
    • Especially the update to the P&C Model at ArchSite
  • Explanation of Costs Document
  • For the the complete list of all planned work:
    •  http://jira.ncsa.uiuc.edu/browse/LSST
    • http://dev.lsstcorp.org/trac/query?status=assigned&status=deferred&status=inQaReview&status=inStandardsReview&status=inTicketWork&status=inTrunkMerge&status=needinfo&status=new&status=sqaneedinfo&group=owner&component=infrastructure&order=priority&col=id&col=summary&col=status&col=priority

Notes

Attendees: K-T, Jacek, JeffK, RayP, GDF, Daniel, MikeF

• MikeF will include a reference to the baseline version of the cost sheet when reviewing changes
• During the next baseline revision, we will make the the cost sheet and cost summary sheets "change controlled" in Docushare
•  LSST-9 Estimate Cost of Forcedsources
  • Pending update to diskIO sheet Doc 1990 [Jacek]
  • MikeF will update cost estimate when Doc 1990 is available
  • Note: The cost analysis document is attached to the JIRA issue (no more email attachments)
• RayP is drafting a document that will outline how to think about alternative architectures such as GPUs, Solid State Storage, etc. This will include the attributes and characteristics to consider when discussing these technologies.
•  LSST-27 MikeF will review HW model tab in diskIO sheet Doc1990
•  LSST-28 Mikef will estimate Cost Difference (esp. P&C) of a 3yr CPU Replacement Policy vs 5yrs
•  LSST-29 Storage Costs for Maintaining CSS Database Performance was also discussed during the call. See ticket for details.
  • Note: The analysis document is attached to the JIRA issue (no more email attachments)