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Significant Updates and Fixes in AliRoot v4-19 Release for Enhanced Performance

This document summarizes crucial updates and corrections made to the AliRoot v4-19 release. Key improvements include the resolution of minimum bias PbPb production issues at 2.76 TeV, enhancements to the EMCAL component, and optimizations in TPC calibration processes. Several bugs have been addressed, including memory leaks, corrupt hits in MUON, and reconstruction errors. Additionally, there are revisions to various calibration methods and performance improvements to streamline operations and ensure data integrity. Continued development focuses on user-defined input datasets and system memory management.

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Significant Updates and Fixes in AliRoot v4-19 Release for Enhanced Performance

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  1. v4-19-Release P. Hristov 11/10/2010

  2. Not ready (27/09/10) • #73618 Problems in the minimum bias PbPb MC production at 2.76 TeV • #72642 EMCAL: Modifications in AliEMCALRecPoint, coverity corrections and other. From rev. 43377,43378,43549,43550,43560,43573,43821 • Very slow processing in the EMCAL trigger

  3. Committed changes • #72243 ESD friend filtering: Calibration events and tracks for TPC calibration • #72780 EMCAL: Port coverity corrections and ocdb file to release. From rev. 43512,43648 + patch • #73467 Corrupted MUON hits when using AliRoot with Root v5.27/05 and v5.27/06 • #73114: Bug in TPC reconstruction. From rev. 43842 • #72836: New SPD geometry: sector profile closer to reality. From rev. 43694, 43695, 43706

  4. Committed changes • #73598 Request to port a bug fix in the filling of VZERO ESD friend. From rev. 44090 • #73575 please add revisions 44058, 44067, 44071 to v4-19-Release (EVE). Rev. 43160 in addition to avoid conflict in visscan_init.C • #73431 Request to port commit 43997 (ITS standalone tracker) to v4-19-Release • #73386 Port changes to AliRoot release (TPC). From rev. 43971 • #73340 Porting of last updates for AliTRDCalibraFillHisto in the release v4-19-Release for pass1. From rev. 43595 • #73623: ZDC QA changes for DQM shifter

  5. Changes: OCDB • #73446 SPD OCDB in MC production • #73597 TPC RecoParam MC OCDB update (no one pad clusters) • #73474 Update TRD Calibration LHC10e period • #73473 SPD Dead to RAW OCDB

  6. SHUTTLE • #73268 SHUTTLE failure for HMPID due to core PVSS problem • #73261 Failed TPC preprocessor for runs 133414, 133415, 133416, 133417, 133418

  7. Requests • #73849 Request to port rev. 44193 to the release (MUON QA @ Pt2) • #73839 AliCDBGrid --> port to the release • #73826 Cosmic selection: Event specie • #73798 SDD Hits corrupted when simulating with root v5-27-06 • #73855 Request to port update of HLT online display to v4-19-Release • #73857 Request to port update of HLT framework to v4-19-Release • #73858 Request to port update of HLT macros to v4-19-Release • #73860 Request to port update of HLT TPC online components to v4-19-Release

  8. Requests • #73862 Request to port update of HLT global online components to the v4-19-Release • #73863 Request to update HLT ChangeLog of v4-19-Release

  9. Requests: OCDB • #73852 Request to update the raw OCDB/ITS/Align/Data and ITS/Calib/RecoParam and port r44186,r44199 to release • #73837 MUON: new alignment object for raw:// OCDB • #73764 TPC Calibration entries for runs 133414, 133415, 133416, 133417, 133418

  10. Other reports • #73704 Streamline the CAF reconstruction in case of user-defined input raw-data collections • #73666 Fixes to EVE/alice-macros/muon_clusters.C • #73665 Fix to alieve_online.C • #73656 Memory leak in AliTPCParam • #73624 Undefined problem with mixing tracklets

  11. Other report (05/10/10) • #73538 TPC online and offline drift velocity calibration • #73432 EMCAL: Improvements for next productions • #73427 ULong_t and Long_t are not portable • #73417 Segvio reading ESD friends • #73348 AliAnalysisTagAnalysis not compatible with Tag files

  12. Other reports (27/09/10) • #73204 Ship the ITS mean vertex to the DCS and the machine • #72907 Call to multiView->InitGeomGentleMuon(gmuon, kFALSE, kTRUE); causes SIGSEGV • #72834 Request to extend AliPID::EParticleType to include light nuclei • #73203 Mean-vertex DA for HI run • #73198 HIJING Simulation crashes in destructor of AliGenHijingEventHeader • #73115 Floating point exception in hijing • #72965 New AliESDCaloTrigger + associated modifs in AliESDEvent

  13. Other reports (20/09/10) • #72723 Warning from HLT memory manager • #72662 ZDC code needs changes in STEER to work in HLT module • #72632 AliESDHeader contains misleading/wrong information • #72627 Problems in MC reco. from raw data • #72621 Suggestion for an extra protection in AliQADataMaker::Add2List

  14. Other reports (13/09/10) • #72388 Analysis tender is called after phys sel task • #72470 Memory leak in AliESDTagCreator::CreateESDTags • #72561 Simulation crash with rev. 43493 (change of AliGenHijing::fHeader)

  15. Other reports (06/09/10) • #72254 Introduce V0 Offline Trigger bits in the tags • #72317 Enable the compression of raw data • #72222 Memory leak in AliCaloCalibPedestal.cxx:58 • #72189 Memory leak @ AliTRDtrackV1.cxx:807 • #72164 Produce tags from RCT and merge with those created by reco • #72162 Reactivate CAF reconstruction • #72161 LTU config in OCDB

  16. Other reports (06/09/10) • #72159 Assign a Savannah to each detector to use raw OCDB in Simu • #72156 QA information into the run coordination table • #72152 Add merging of reco QA and tags in PWG1 • #72148 Recuperate thresholds for DQM into SHUTTLE

  17. Other reports (31/08/10) • #71979 fix AliITStrackV2::Improve() • #71952 VO_ALICE@AliRoot::v4-19-16-AN versus VO_ALICE@AliRoot::v4-19-22-AN

  18. Other reports (23/08/10) • #71709 There was a crash (kSigFloatingException) when do a test in ppbench • #71730 Delete output object in destructor of AliAnalysisTask

  19. Other reports (17/08/10) • #71359 Reconstruction for only HLT fails, • #71331 Improper use of TClonesArray in HLT for PbPbbench reconstruction - AliHLTMUONRecHit::AliChannel • #71291 Warning in Raw2SDigits for PHOS may indicate a problem

  20. Other reports (09/08/10) • #71207 Alien plugin : SetAdditionalLibs + EnablePackage • #71162 Alien plugin: problems with tags • #71073 Relative path for 'include' in dependency files • #71058 AliESDtrack label out of bounds • #71034 Improper use of TClonesArray in HLT for pp reconstruction - AliHLTDomainEntry/AliHLTTriggerDecision • #70989 GRP failing due to LHC Clock Phase issue

  21. Other reports (02/08/10) • #70771 Crash in Analysis in PbPbbench • #70739 Correct LHC clock phase treatment necessary

  22. Other reports (27/07/10) • #70389 Handling of Spectators has changed in HIJING after the updates for 1.38 • #70424 Filling scheme info in the ESD/AOD • #70433 Extension of AliPhysicsSelection to support new online trigger classes (with/without TRD pretrigger) • #70437 Bad TPC raw-data reading on raw->sdigits • #70461 Problem using Raw2SDigit for TRD on real data • #70498 TPC simulation crashes in ppbench • #70581 AliSimulation::Raw2SDigit for FMD on real raw data crashes • #70582 AliSimulation::Raw2SDigit for HMPID on real raw data errors in decoding

  23. Other reports (27/07/10) • #70587 AliSimulation::Raw2SDigit for ITS has huge memory leak (and crashes) • #70613 Shuttle freezes during communication with AliEn • #70639 AliSimulation:Raw2SDigits for EMCAL is not implemented? • #70665 Background estimation in physics selection to be updated • #70674 AliSimulation:Raw2SDigits for T0 is not implemented?

  24. General status • Need to freeze v4-19-Release for the coming PbPb collisions • Outstanding issues: low success rate (95% in pp, ~50% in cent1 PbPb) • Memory consumption • CPU consumption • Reconstruction of RAW data with many PbPb events: not tested • Several commits still needed, see the requests on the next page • Proposed solution • Run MC for 1000 central PbPb with every new tag (already done, see LHC10f8*). Store all files; store also everything from the failing jobs • Run QA macros on the successfully produced events • Discuss the results at QA and FHIP meetings and fix the issues • Important condition • Participation of the FHIP members in the weekly offline meeting

  25. Coverity • Good response in general • Still adding new defects while fixing the old ones

  26. CPU: PbPb simulation

  27. CPU: PbPb reconstruction

  28. Memory: PbPb MC production

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