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2-R-014 (CERN)
2-R-014
CERN
Description
CERN, bat 2 R-014
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Production and PASTE Meeting, 24th November 2009, CERN
Chair: A.Tsaregorodtsev
Minutes: S.Paterson
CERN: P.Charpentier, J.Closier, Z.Mathe, S.Paterson, R.Santinelli, F.Stagni
Phone: V.Fernandez, R.Graciani, E.Lanciotti, R.Nandakumar, A.Tsaregorodtsev, A.Zhelezov
Apologies: A.C.Smith
0. Ongoing Action List
#12524 - Ricardo has installed the updated binaries on the new development host. MySQL is now installed correctly
and all tables / services are in place. Joel was asked to add the service installation to the VO-box templates. ( ACTION: Joel )
#12525 - New DIRAC certification system - a new machine of the same profile as volhcb12 was desired for
certification of the next DIRAC release.
#12526 - The request was made to replace volhcb02 and volhcb06. This becomes important since we require a new
file server for logs.
1. Production Status Report
- Current productions, LHC collisions data
Stuart summarised that the reconstruction of the first beam data was launched on Sunday after the relevant Brunel
release was made. Yesterday the first collision data was reconstructed ~1hr after becoming available at the pit. In
other news the 'Data Recovery Agent' has been running without intervention using the Moore and physics stripping as
a test case (5589 and 5600), these productions are arriving at 100% of data processed. Once this test is successfully
complete the agent will start to run on all data processing productions. One important comment is that the
reschedule operation should be abandoned for shifters as soon as possible. Operationally we are still suffering from
the 134 error and the Gaudi finalisation crash (affecting ~10% of jobs). The new LBSCRIPTS package allows us to run
in debug mode at Grid sites so will hopefully shed more light on this. An alarm ticket was submitted yesterday due to
the 3D streaming to Tier-1 sites not propagating our database tags. It was agreed that sites would support 24/7 the
conditions database service but this was not viewed as part of the set. Joel conveyed that the alarm ticket was
assigned to LHCb (after being submitted by LHCb) and this is being discussed. Some problems after NIKHEF dCache
upgrade, users in multiple VOs statically mapped i.e. storage not VOMS aware. Philippe raised the issue of 100TB
becoming available for our space tokens at CERN.
- BK processing pass modification proposal
See proposal attached to the agenda. This allows a tighter coupling between the simulation conditions and processing
pass and will streamline the request interface. If backwards compatibility can be preserved this will be highly
desirable.
- BK data taking conditions
The data taking conditions name will now be automatically created by the BK such that it is not ambiguous. It was
noted that this change should be carefully coordinated with the ongoing production activity. The full minutes of the
meeting were circulated by mail.
- CREAM CE SAM tests
Roberto mentioned that the CREAM CEs are not published in the BDII in the same way as other LCG CEs and therefore
SAM results are not being published to the SAM DB. A change can be made to the client to update the results (pursue
with low priority).
- SW area disk quotas, SW cleaning
Joel confirmed that the cleaning cannot easily be performed for the LCG external distributions. At CERN this gained us
11GB. Since a cleaning procedure is not on the horizon it was suggested to update the space requirement to 100GB.
- Reconstruction Production Requests monitoring
The percentage field is not calculated because Alexey is still waiting for an efficient way to retrieve the total number of
events for a given input data query.
2. DIRAC Release Update
- v4r21(p1) release
v4r21 added fixes from Zoltan for the BK GUI. The p1 release was to add the checksum fix from Andrew since some
DMS commands were not working as expected. Joel will add this to the release area.
3. DIRAC Tasks
- SVN migration
o release tagging, building and installion scripts
Joel confirmed that tags can be provided and LHCbDIRAC can be built. Ricardo commented that tools are being
provided to prepare from tarballs the SVN DIRAC distributions.
o Subsystems migration status
Everything in the LHCb DIRAC section should be updated already, testing is required in development. Developers are
encouraged to test all subsystems on volhcb12.
4. AOB
None
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