Summary Minutes of CMS Computing Coordination Meeting

Meeting 2005-11-02

Present: Lothar, David, Peter, Nick, StefanoB, StefanoL, Ian, Luciano

-- Announcements

David is stepping down as Computing Coordinator now that the CTDR is out and reviewed, to move to another area in CMS. He is starting to work in the forward detector area. A party is being planned and a successor is beginning looked for. Good luck and thanks to David for many years of leadership in CPT!!

-- Requests for EGEE T1 and T2s for dBase deployment/integration test

CMS will drive this test that is planned for the coming weeks, but other experiments are interested in seeing the results for a decision on a final system for optimizing calibration/alignment database access on the Grid. The test will be handled in the CMS Computing Integration Program, and the overall planning with sites is subject of a presentation in the Nov GDB by Dirk Düllmann.

At the time of this meeting only US sites had signed up. In the meantime EGEE/LCG sites have been identified to participate in this important end-to-end integration and performance test of the Squid-based (FronTier) infrastructure for calibration/alignment database on the Grid. More information in Lee Lueking's talk in the CPT week at

-- Production Manpower

We are looking for suitable candidates for people that would work in the areas of MC production operations and Data Management Operations. This is part of staffing the M&O Cat-A positions agreed by the CMS countries. We would need to identify people who could come to CERN but would have a host institution affiliation, so that they can be eligible for project associate-ship.

Luciano and others have tried to identify good candidates for this. If you know of amy candidate please let us know!

-- Tier0 developments

As a follow up from the Tuesday meeting in the CPT week, we are discussing to do two things:

o start an RTAG to converge on the Tier-0 data flow aspects from the HLT through the T0 to the Tier-1s with other involved parties. The exact charge is to be defined (presumably by the CPT-MB). We expect to get detailed requirements on the performance parameters of the Tier-0 components.

o start a technical project initiating the work on the Tier-0 workflow

We believe that the RTAG and the initial prototyping work for the project could conclude in early spring, at which point we could setup the full Tier-0 project within CMS computing.

There are several people interested to start working on this. It now needs to be discussed in the CPT-MB (please give us any additional input above what's been exposed in the Tuesday CPT meeting ASAP!). We expect to start the RTAG in the December CMS week.

-- CMS request for the LCG File Catalog LFC

CMS has given requirements to the LFC project. JP Baud will make the suggested improvements. StefanoB will talk to Jose/Pablo regarding replacing RLS with LFC for LCG production. Support at CERN for RLS catalog will nominally go away at the end of year.

-- Baseline Services Meetings

The last round of baseline service meetings is supposed to finish out in Nov with defining performance metrics for services. StefanoB will be the CMS rep for the upcoming meeting, with the technical program coords (StefanoL, Peter) following closely the developments.

-- Cosmic Challenge scope and Preparations

This item was discussed and summarized in LatB's slide at the Cosmic Challenge meeting in the CPT week -- see

-- HyperNews installation and maintenance

On Peter's initiative, LCG SPI are willing to support the server side of HyperNews (web/mail server, backups, interaction with IT about providing Simba aliases). Atlas is another potential user of this service. It will be brought up in the Architects Forum meeting tomorrow (Thu, 3 Nov). A first test installation was tentatively scheduled on the LCG SPI machine with Andreas for Thursday, 10 November.

-- Joint CVS for Software and Computing

There has been convergence on how we will do this, and agreement between computing and software on this has also been reached. The computing modules will go into a "COMP" subdirectory. This solves some technical issues, but has some disadvantages as the "COMP" isn't completely hidden from the user in all cases (e.g. 'cvs import', perhaps some "-d" cases). We will also pursue adding the CVS commit messages to the existing repositories and some subsystems of CMSSW after the meeting.

-- Status reports:

(After long discussions above, we ran out of time/steam at this point.)

Nick: CVS server update is planned (see announcement in another email). The new cmsdoc is planned to go into production on Monday Nov 7.

End of meeting 17:30

-- LatBauerdick - 21 Nov 2005

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Topic revision: r1 - 2005-11-21 - LatBauerdick
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