1 / 8

OPAL Data Preservation

OPAL Data Preservation. Matthias Schröder, CERN. LEP. Large Electron Positron Collider Four general purpose experiments ALEPH, DELPHI, L3, OPAL Varying detector layouts Varying data structures Varying software approaches Optimization Personal preferences Data taking: 1989 – 2000

metea
Download Presentation

OPAL Data Preservation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. OPAL Data Preservation Matthias Schröder, CERN

  2. LEP • Large Electron Positron Collider • Four general purpose experiments • ALEPH, DELPHI, L3, OPAL • Varying detector layouts • Varying data structures • Varying software approaches • Optimization • Personal preferences • Data taking: 1989 – 2000 • ‘89 to ‘95: at and around Z-peak (91 GeV) • ‘95 to ‘00 increase in various steps up to 209 GeV OPAL Data Preservation - Matthias Schröder

  3. OPAL Data • Type: Raw Data Reconstructed + Raw Compressed Reconstructed + some Raw Compressed Reconstructed (Monte Carlo only) Ntuples Calibration + Conditions • Format: Zebra • Medium: Optical Disks (raw data only) Tape (everything, except most Ntuples) OPAL Data Preservation - Matthias Schröder

  4. Catalogs • For raw data optical disks: ? • All data (except most Ntuples): castor • Some History / metadata: fatmen OPAL Data Preservation - Matthias Schröder

  5. Documentation • Primer • Introduction for newcomers • Technical Notes • Publications • All Latex OPAL Data Preservation - Matthias Schröder

  6. Software • F77 • Relies heavily on CERNLIB • Reconstruction packages in archive • Ported to actual SLC • Validation minimal • Calibration SW, workgroup and private code dispersed • Tools • Future of Fortran compiler is a worry OPAL Data Preservation - Matthias Schröder

  7. To Do (I) • Data • Copy off site • Create catalog outside castor • Extract info from fatmen database • Check completeness • Recreate lost data sets OPAL Data Preservation - Matthias Schröder

  8. To Do (II) • Documentation • Validate Primer • Move docs to archive • Software • Keep adapting to new OS versions • Ok to adapt to more picky compiler • Can we cope with compiler dropping features • Validation suite needed • Image full reconstruction environment? OPAL Data Preservation - Matthias Schröder

More Related