CERN – Alice Offline – Thu, 20 Mar 2008 – Marco MEONI - 1

Status ofCosmic Reconstruction

Offline weekly meeting

CERN – Alice Offline – Thu, 20 Mar 2008 – Marco MEONI - 2

Current Situation

• Production started on March 17th at 7pm (on global partition LHC08a)

• Phase 1

– Most Wanted List: 120/857 runs, 43.778/108.284 raw files

– Local steering (see later)

– Completion expected by next Tuesday

• Phase 2

– Low Priority List

– Will be steered by LPM – Lightweight Production Manager (see later)

– Completion expected during the ALICE week

• Phase 3

– Missing Dec07's global runs (~10k raw files)

CERN – Alice Offline – Thu, 20 Mar 2008 – Marco MEONI - 3

Phase1: Ongoing Production

• ~16.000 done jobs• Manual intervention is evident

• No specific Grid problems, only Cluster

Monitor stuck on voalice03/06

CERN – Alice Offline – Thu, 20 Mar 2008 – Marco MEONI - 4

Phase1: Failures

• Others errors:

– Input Box: none

– Expired: none

– Saving: negligible

AliRoot Grid

CERN – Alice Offline – Thu, 20 Mar 2008 – Marco MEONI - 5

Phase1: few details

• One job for single chunk (it will be per run in Phase2)

• Output is about 40MB

• rec.C added to rec.log (experts review)

• Packages: AliRoot v4-11-Rev-03, ROOT v5-18-00b

• Sites: CERN::LCG, CERN::CERN-gLite

• Reconstruction time per raw file: 5 minutes in avg (no QA)

CERN – Alice Offline – Thu, 20 Mar 2008 – Marco MEONI - 6

Monalisa DAQ page shows now percentage and number of chunks reconstructed per each run (Costin)

Phase1: can be monitored!

CERN – Alice Offline – Thu, 20 Mar 2008 – Marco MEONI - 7

• Need to switch to one master-job per run– Now hard to monitor

– Now no automatic re-submission to keep the task queue filled

– LPM will be used for this purpose

• JDL already in place– Split by #alienfirstfilename#

– waiting for correct functioning of the #aliensplit_se# directive (used to create the output folder for the reconstructed chunks)

• According to the current reconstruction time per raw file, we expect an "online production"!

Phase2

CERN – Alice Offline – Thu, 20 Mar 2008 – Marco MEONI - 8

Conclusions

• Everything is working, just be patient for results to be computed