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Minutes19Feb2010 RAC Minutes, February 19, 2010

Members (*=present)

*Richard Mount, Kevin Black (Physics Forum Chair), *Jim Cochran (Analysis Support Manager), *Alexei Klimentov (ATLAS ADC) Ian Hinchliffe (Physics Advisor), Rik Yoshida (Tier3 Coordinator) *Michael Ernst (U.S. Facilities Manager) Rob Gardner (Integration Coordinator) *Kaushik De (U.S. Operations Manager) *Armen Vartapetian (U.S. Operations Deputy)

Ex-Officio: Torre Wenaus *Stephane Willocq *Mike Tuts Howard Gordon

Correction/approval of minutes of 2/12/2010 meeting

The minutes were approved.

Core team membership

The members of the core team must be present to achieve a quorum at weekly RAC meetings. Other RAC members are welcome to attend the weekly meetings and should make every effort to attend monthly meetings.

A core team membership of Richard Mount, Jim Cochran (Physics), Michael Ernst (Facilities) and Kaushik De (Operations) was agreed. If the absence of a core team member cannot be avoided, Kevin Black (Physics), Rob Gardner (Facilities) and Armen Vartapetian (Operations) will act as alternates.

Strategy for engaging the US ATLAS physics community

Jim noted that email to usatlas-l was rarely effective in this context. He proposes to create a single Physics/Physics Support Wiki to be publicized through the Physics Forum conveners.

Richard reported on a discussion with Ian Hinchliffe (who had a conflict at the meeting time). Ian had emphasized that it would be very difficult to get physicists excited about the work of the RAC and its needs for their input until high-volume physics data arrived and created resource conflicts.

Stephane pointed out that (apart from the initial announcement from Torre) the New RAC had not announced itself and its Wiki to the US Atlas community. This will be done (Richard).

It was also proposed that the RAC and its needs for input from physics be presented at the next US ATLAS PI meeting. Richard agreed to approach Al Goshaw.

Towards a continuous inventory of disk space usage

Michael noted that there were many sources of information, but they were mainly unintelligible and often inconsistent.

Kaushik had provided a link (http://indico.cern.ch/materialDisplay.py?contribId=3&materialId=slides&confId=84176) to a recent talk to focus the discussion, much of which centered on slide 4. The table on slide 4 looked like the sort of high-level summary that was needed. However, the process of creating the table was entirely manual, and it had many obvious deficiencies – for example no listing of unallocated space. To be really useful, such a table would allow drilldown on each quantity to find out more about how the space was being used.

It was agreed that the core team would work to draft a specification of what disk-usage information the RAC would need to do its job, and have a first version available for next week’s meeting.



Action Items

  1. 2/19/2010: Richard, Announce the RAC and its Wiki to usatlas-l
  2. 2/19/2010: Richard, Propose RAC talk at US ATLAS PI Meeting (email sent)
  3. 2/12/2010: All (but especially Kevin/Jim/Ian), Propose the parts of the activity list above that are your responsibility and identify any activities that do not appear to be an appropriate task for any of the current RAC members. (Partially completed)
  4. 2/12/2010: Richard Propose RAC core group membership (Completed)
  5. 2/12/2010: Richard Non-urgent simulation tasks - consult with physics groups on the best way to establish two-way communication with the RAC to meet this and other needs (Starting)

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