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STAR Quality Assurance

STAR Quality Assurance. Purpose Testing quality of large scale DST production Offline QA Histograms and scalars AutoQA System Web-based, uses PERL scripts. ALICE/STAR Apr 8, 2000. Curtis Lansdell. Offline QA. ROOT-based macros report via histograms and/or scalars Event-wise

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STAR Quality Assurance

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  1. STAR Quality Assurance • Purpose • Testing quality of large scale DST production • Offline QA • Histograms and scalars • AutoQA System • Web-based, uses PERL scripts ALICE/STAR Apr 8, 2000 Curtis Lansdell

  2. Offline QA • ROOT-based macros report via histograms and/or scalars • Event-wise • # TPC hits; is particular table present • Run-wise • mean, rms, min, max # tracks per event in 40 events • 3 DST types produced at STAR • Real data • Cosmic ray events • Simulated data • Mock Data Challenges • Nightly data • Library status check (DEV, NEW, PRO) ALICE/STAR Apr 8, 2000 Curtis Lansdell

  3. Offline QA II • Used differently for various DST types • E.g., Real data vs. Nightly production • Real – infrastructure should be stable • Focus more on quality of data • Nightly – infrastructure probed more • Stability of libraries on different platforms (Linux, Solaris) • Different event generator settings exercise code ALICE/STAR Apr 8, 2000 Curtis Lansdell

  4. AutoQA System • Written in PERL • Builds QA database • Provides web access to results • Jobs run periodically • Finds DST data on disk • Executes macros via PERL scripts automatically • External control files allow certain macros to run • Depends on type of data being analyzed • Evaluates test results & saves to DB STAR->Computing->QA ALICE/STAR Apr 8, 2000 Curtis Lansdell

  5. More on AutoQA • DEV and NEW • Uncovers conceptual and programming errors on limited number of events • PRO • Verify stability of production over large number of events ALICE/STAR Apr 8, 2000 Curtis Lansdell

  6. Work in Progress • Generalize AutoQA through interface to mySQL • Run macros under LSF on RCAS for QA of large scale production (PRO) • Apply AutoQA framework to Online data-taking to verify stability ALICE/STAR Apr 8, 2000 Curtis Lansdell

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