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.
Proposed 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.
Kick-off meeting 3/25. Notes here. Have solid plan, based on resource-loaded, change-controlled, technical "planning packages" linked to sections of baseline docs. Everyone present at the meeting fully on board with that plan. Will be "easy" to do once we have solid baseline documents. Documentation will come in two forms: core will be covered through LDM-PMT, less official notes through to-be-written (based on existing notes) TechNote.
John Swinbank will T/CAM the production of the calibration plan itself. I.e., work with Robert to define deliverables for the CCB and come up with a realistic schedule (and people) to deliver those document.
Summary of the most important outcomes from the AstroPy – LSST meeting over the past weekend. Very successful. We identified many areas of commonality.
Any follow-up on the status of "Update to LSE-239 Base Facility Data Center Design Requirements" (LCR-606)?
Primarily waiting on cost impact estimate before making further engineering design trade-offs if needed. Jeff Barr says: "Andes Arquitectos and their consultants agreed on Friday 3/18 to provide a cost estimate by the end of the following week (~Friday 3/25). This is expected to be in the form of an update to their overall PDR (11/12/15) estimate for the Base Facility, and should provide sufficient detail to determine the approximate cost impacts due to the changes described in LCR 606 (revisions to LSE-239)."
Jeff Barr also says: "During the regular biweekly Base facility design meeting 3/18/16 Tom Durbin of NCSA clarified that we can apply an 80% demand factor to the total computing loads. If we take the total power for all the racks, each of which is identified as either 15 kW or 5kW, summing to 930 kW, and apply a 0.8 factor for demand, the design load for the power feed and backup would be 744 kW, instead of the nominal 800 or 850 kW which we had been given by DM previously. Tom also stated that the Tier 3 requirement does not require redundant backup (2 generators), but rather redundant *sources* of power, so commercial power plus one backup generator with 100% of the load capacity would comply. These factors should help to reduce the impact of the DC electrical load increase reflected in the this LCR."
What are we including in the release (when do we freeze the features and tag it)? When will we publish it (could be a lot later, but needs to not be too late)?
10min
Summary and discussion of NSF Status Report Findings
Proposal is to move to the BSD license, in line Jim Bosch's proposal in
DM-5031
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Getting issue details...STATUS
and the series of comments that followed.