Difference: CCRC08DailyMeetingsWeek080310 (2 vs. 3)

Revision 32008-03-13 - HarryRenshall

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META TOPICPARENT name="WLCGCommonComputingReadinessChallenges"
-- HarryRenshall - 07 Mar 2008

Week of 080310

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Tuesday:

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elog review: One new entry Tuesday morning- srm put failures to CERN LHCb durable disk. Problem found and fixed soon after.
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LHCb (RS): Since some time LHCb has been migrating data at RAL from dcache to castor and it is about 50% complete. They now want to speed up this procedure by transferring files that are also at CERN directly from CERN leaving only the files uniquely at RAL to be recalled from dcache. The LFC mirror at FZK is now operational.

ATLAS (AdG): The upgrade to DQ2 version 0.6 went well. This week they will be testing T1 to T1 transfers to PIC and IN2P3. They are preparing a sample to be sent to each T1 of 20 datasets of 100 files each as the test data. Each two weeks they will exercise different T1 sites as the target. In the alternate weeks they plan T0 to T1 throughput tests which include also exercising T1 to T2 transfers. This pattern will continue up to the May CCRC'08.

CMS (DB): Focussing on CERN to T1 transfers but this will reduce during this week as they will move to debugging links. They would like to coordinate some throughput tests, including T1 to T1, with ATLAS during March/April. Their T0 processing has been suffering from some job wrapper errors.

ALICE (HR): Continuing high rate export to their 5 T1. RAL is working on their ALICE setup but at low priority.

 Core services (CERN) report:

DB services (CERN) report:

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Questions/comments from sites/experiments: M.Jouvain at GRIF reported a problem of ATLAS transfers from IN2P3 requesting the SRMv1 transfer protocol but having SRMv2 space tokens.
  AOB:

Wednesday

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elog review: Nothing new
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ATLAS (AdG): Have started T1 to T1 transfers with PIC as the first target with, initially, functional tests to look for any particular problems. The PIC VObox has been upgraded to DQ2 0.6 for this purpose.
 
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CMS (DB): They have started a 'global run' which is Tier 0 only and have some setup issues with Castor service class environment variables. T0 to T1 exports are ramping down to the 50% level to allow sites to clean up disks and tapes.
 
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LHCb (RS): Continuing preparations for the May run. Some LHCb LFC are not yet being published in the IS. They would like access to a prototype of gLEXEC. Next week is a software week which will include, on Wednesday afternoon, reports on the February CCRC'08 run.

Core services (CERN) report (GM): The FTS team will be restarting some dteam export in order to test various patches. Initially this will be low rate and any stress tests will be first scheduled through this meeting.

DB services (CERN) report (MG): There was a problem on Monday during a scheduled move of a Gridview table which made Gridview unavailable for some time and also prevented the ATLAS SAM tests from running. The cause was a lack of space in the production database and a meeting to review this, e.g. how long to keep data, has been arranged for next Monday.

Monitoring / dashboard report: The SAM problem of recognising both the new and deprecated srm publishing syntax is now being addressed with a new script in preparation.

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Questions/comments from sites/experiments: NT asked what future gLite releases might be needed in the next weeks. GM said they may have a new FTS and at some time the Oracle version of AMGA will come out of certification and testing.
  AOB:
 
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