Prompt Calibration Loop 11 February 2011 Overview Prompt
Prompt Calibration Loop 11 February 2011
Overview • Prompt calibration loop in SCT – Provides ATLAS with conditions data used for the bulk reconstruction at Tier 0 (& reprocessing) • Noisy strip map (only as of today) – Provides SCT with key variables to monitor the performance • Noisy strip/chip, dead strip/chip, noise occupancy, efficiency, bytestream errors etc. • Offline jobs to create the outputs run automatically on TMS (Task Management System). – DQ shifter monitors the job status. • All outputs are manually uploaded to COOL database – DQ shifter uploads the outputs to COOL. 2
Bulk Reconstruction at Tier 0 • “Bulk reconstruction” at Tier 0 – Tier 0 runs reconstruction on RAW data for each run. – The outputs are distributed to Tier 1 s for physics analysis. • Run-calibration-reconstruction cycle – A run finishes. – A fixed 36 hours is given to subsystems, as offline calibration period. Prompt calibration loop has to be – Reconstruction starts. completed within 36 hours run 1 run 2 calibration 1 (36 hours) run 3 calibration 2 (36 hours) reconstruction 1 reconstruction 2 time 3
Prompt Calibration Loop • For a given run, prompt calibration loop has to be completed within 36 hours. • 3 steps – Processing : Offline calibration jobs run automatically. – Outputs : Appear on a dedicated Web page. – Uploads : Uploads to COOL database on the Web page. 4
Processing • For a given run, 7 types of jobs are defined. Type Noisy strip Dead chip Comments Used for bulk reconstruction Performance monitoring Noise occupancy Raw occupancy Efficiency Bytestream error Performance monitoring 5
Shifter’s Work • Go to SCT-dedicated upload Web page (See page 7). https: //pc-sct-www 01. cern. ch/24 h. Loop/index. php – Log in. – Check a list of runs in recent 2 days on ATLAS Run. Query, which are in prompt calibration loop period (36 hour timewindow for each run). – Upload the outputs if available. – Contact experts for any questions/problems. • Go to Task Lister Web page (See page 8). https: //atlas-tz-monitoring-caf. cern. ch/task. Lister. html – Monitor jobs for a list of runs are defined/running/done. – Contact experts for any questions/problems. 6
Upload Page https: //pc-sct-www 01. cern. ch/24 h. Loop/index. php Send message to experts Link to documentation etc Log in Last run uploaded for noisy strip Check cron job Tabs to select types (Noisy. Strip is selected in this page) Select tag (default is selected) Click for uploads Upload test flag (Noisy. Strip only), checkbox, log Link to ATLAS Run. Query 7
Job Monitoring on Task Lister https: //atlas-tz-monitoring-caf. cern. ch/task. Lister. html NOTE : don’t care “#Events=0” Tasks defined Select “sctcalib” Type sctns : Noisy. Strip, 2 jobs (tag c 0, c 00) sctdc : Dead. Chip, 1 job sctds : Dead. Strip, 1 job sctno : Noise. Occupany, 2 job (tag c 0, c 00) sctro : Raw. Occupancy, 1 job scteff : Efficiency, 1 job sctbse : BSErrors, 1 job Tasks running Tasks done 8
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