r3 - 15 Mar 2010 - 14:05:42 - RichardMountYou are here: TWiki >  AtlasSoftware Web > Minutes5Mar2010

Minutes5Mar2010 RAC Core Team Minutes, March 5, 2010

Core Team Participation

Richard Mount, Jim Cochran (Analysis Support Manager), Michael Ernst (U.S. Facilities Manager), Kaushik De (Operations)

Other Participants

Alexei Klimentov (ATLAS ADC), Armen Vartapetian (U.S. Operations Deputy)

Minutes of the 2/26 core team meeting

Were approved

Discussion of new draft CREM policy on data distribution

See http://indico.cern.ch/conferenceDisplay.py?confId=86831 for the draft policy.

The CREM meetings are open. Alexei is a member of the CREM. Richard had participated in the most recent meeting at which the policy was discussed and noted that the CREM chair would add interested people to the CREM mailing list on request

Alexei was the principal editor of the policy and briefly presented it. He noted that there had been a need to clarify the ESD distribution policy since Kors Bos had recently proposed that no ESDs be distributed to Tier2s but this proposal did not appear to meet the needs and wishes of the user community.

There was some discussion of how much access to ESDs was really needed – much of the ESD use might be more appropriated redirected to DESDs.

Overall the RAC core team saw no problem with the draft policy.

Richard was concerned about the small level of physics management involvement in developing such relatively complex policies.

Regional Production

Kaushik reported that most US resources remained idle. There were US physicists who needed simulation, but it remained unclear whether analysis based on regional production would be treated on the same basis as analysis using official ATLAS production. Kaushik noted that events created by a regional production were indistinguishable from those created officially using the same release. However, it was noted that ATLAS physics management seemed very unenthusiastic about regional production.

Ideally, there would be a clear ATLAS policy about the conditions under which regional production could be used to obtain ATLAS-endorsed results. Kaushik’s attempts over the last year to have such a policy formulated had not been successful.

Jim noted that BaBar’s centrally managed simulation production had been largely successful in using its distributed simulation resources efficiently. Nevertheless, it was agreed that an ATLAS policy on regional production was highly desirable.

Richard agreed to make renewed informal attempts to get such a policy.


Michael proposed that RAC decisions be explicitly noted in the PS&C level 2/3 Management meeting minutes. It was agreed that Richard would propose this to Torre.

Action Items

  1. 3/5/2010: Richard: Attempt to generate ATLAS enthusiasm for a policy on regional production.
  2. 3/5/2010: Richard: Propse formal inclusion of RAC decisions in PS&C level 2/3 Management meeting minutes
  3. 2/26/2010: Kaushik, Find out why the MWT2 DataDisk usage decreased to 20%. Kaushik reported that the deletion of 76% of the content of DataDisk at the MWT2 had been due to a malfunctioning cron job. The data were being restored. (Completed)
  4. 2/19/2010: Richard, Announce the RAC and its Wiki to usatlas-l (Completed)
  5. 2/19/2010: Richard, Propose RAC talk at US ATLAS PI Meeting. Richard had presented the RAC to the March 3 US PI meeting. There had been no time for questions and no other feedback to date. (Completed)
  6. 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. (Ongoing)
  7. 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 (Ongoing – see discussion of regional production)

About This Site

Please note that this site is a content mirror of the BNL US ATLAS TWiki. To edit the content of this page, click the Edit this page button at the top of the page and log in with your US ATLAS computing account name and password.


Powered by TWiki
This site is powered by the TWiki collaboration platformCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback