Atlas:Analysis Challenge-STsummary
Sommaire
Target and metrics
- Nb of events : Few hundred up to 1000 jobs/site
- Rate (evt/s) : up to 15 Hz
- Efficiency (success/failure rate) : 80 %
- CPU utilization : CPUtime / Walltime > 50 %
Monitoring
- Job status : c (completed) | f (failed) | r (running) | s (submitted)
- Log files : o (stdout) | e (stderr) | j (job wrapper output) | w (wms log)
- Job execution evolution plot is in minutes
- CPU/Walltime and events/second plots are only measured with respect to the athena execution time. Athena setup, data preparation and data stageout are notincluded in this.
- Mean Athena Software Setup Time, Mean Prepare Inputs Time and Mean Output Storage Time are in seconds
- Mean Athena software : time measured from the start of ganga worker node script until data preparation (Athena distribution kit setup, unpacking of the tarball with the pre-compiled code and setup of the pre-compiled code.
- Mean Prepare Inputs Time covers LFC bulk access, one lcg-gt call for dCache/castor or multiple lcg-gt calls for DPM for turl retrieval
- Mean Output Storage Time : call of lcg-cr
Test 82 (Dec 15-17)
300 jobs : IN2P3-CC, LPC, GRIF-LAL, GRIF-SACLAY, GRIF-LPNHE, IN2P3-LAPP, TOKYO-LCG2, RO-02, RO-07, IN2P3-CPPM
- Summary :
Test 61 & 62 (Dec 8-10)
300 jobs : IN2P3-LPC, GRIF-LPNHE, IN2P3-CPPM
600 jobs : TOKYO
Input DS Patterns:
mc08.*Wmunu*.recon.AOD.e*_s*_r5*tid*
mc08.*Zprime_mumu*.recon.AOD.e*_s*_r5*tid*
mc08.*Zmumu*.recon.AOD.e*_s*_r5*tid*
mc08.*T1_McAtNlo*.recon.AOD.e*_s*_r5*tid*
mc08.*H*zz4l*.recon.AOD.e*_s*_r5*tid*
mc08.*.recon.AOD.e*_s*_r5*tid*
- Summary:
- TOKYO reached the target : 15 evt/s - CPU/Walltime > 60 % only 3 jobs failure due to Athena crashes out of 600 jobs run Corrupted input AOD files found test 61, job 170, AOD.027097._37998.pool.root test 62, job 202, AOD.027579._24654.pool.root test 62, job 212, AOD.027076._10514.pool.root max. MySQL connections increased from 100, default, up to 200 - LPC: 218 jobs (92.4 %) completed but not all input files could be read Number of input files processed by "completed" jobs ~29000 out of 58326 (expected to be) Site events/s less than 5 Hz - CPU/Walltime < 50 % Job 1.54, DS mc08.105001.pythia_minbias.recon.AOD.e357_s462_r541_tid027069): Expected 1000, Processed 4 input files are available on disk rfio timeout seen in corresponding stderr rfio://clrgpfssrv03-dpm.in2p3.fr//storage/atlas1/atlas/2008-10-20/ AOD.027069._03005.pool.root.1.2344130.0 can not be opened for reading (Timed out) Possible work-around to be considered as applied in UK cloud rfio tuning - increase of rfio bufsize on WNs See http://northgrid-tech.blogspot.com/2008/12/rfio-tuning-for-atlas-analysis-jobs.html - CPPM: Only 69 jobs sent because input datasets were unvalaible there 27 failed jobs (no stdout, no stderr, did not even reach the CE) with the error message 'request expired' from WMS because of 'BrokerHelper: no compatible resources' (WMS log added to the monitoring page). This is seen sometimes by SAM ops test About 14 jobs remained in running state - seen running by site - doing nothing after 1 hour then killed by the batch scheduler no output/no logs = no clear disgnosis CPPM is using GRIF Topbdii. Impact of this ? Decision taken to try to redistribute DS to Marseille to get more jobs but unsuccesfully - GRIF-LPNHE 1/3 of jobs remained in running state - seen then killed by the batch scheduler - no outputs/no logs = no clear disgnosis
Test 43 (November 28)
- http://gangarobot.cern.ch/st/test_43/ 200 jobs over 12 sites
- Problems seen :
- Missing ATLAS release 14.2.20 @ CPPM 02/12/08 [DONE] validate-prod of 14.2.20 at marce01.in2p3.fr (IN2P3-CPPM) - Mapping CE-SE@GRIF-LAL and GRIF-SACLAY : Publication of multiple CloseSEs by LAL and IRFU cf https://savannah.cern.ch/bugs/index.php?44824 should be SOLVED by Ganga team - LFC bulk reading...End of LFC bulk reading...ERROR: Dataset(s)...is/are empty at GRIF-SACLAY_MCDISK / LAL_MCDISK (could be related to same problem) - ERROR@RO7-NIPNE : failed jobs with Athena errors http://gangarobot.cern.ch/st/test_43/gangadir/workspace/gangarbt /LocalAMGA/11/1/output/stdout.gz Core dump reading AOD file error reading from file rfio:tbit00.nipne.ro//storage1/atlas/2008-11-12/ AOD.026357._00299.pool.root.1.810634.0 (Timed out) to be TRACKED - NON FATAL ERRORS (completed jobs) @RO7-NIPNE, RO2-NIPNE : related to ATLASUSERDISK space token configuration ERROR during execution of lcg-cr --vo atlas -s ATLASUSERDISK ERROR: file not saved to RO-07-NIPNE_USERDISK in attempt number 3 ... ERROR: file not saved to RO-07-NIPNE_USERDISK - using now IN2P3-CC_USERDISK CORRECTED
