Difference between revisions of "Atlas:Analysis ST 2009"

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(FR Cloud ST (2009 plans))
(FR Cloud ST (2009 plans))
Ligne 8: Ligne 8:
 
**http://gangarobot.cern.ch/st/test_124/  50 jobs Posix I/O  
 
**http://gangarobot.cern.ch/st/test_124/  50 jobs Posix I/O  
 
**http://gangarobot.cern.ch/st/test_125/  50 jobs FileStager
 
**http://gangarobot.cern.ch/st/test_125/  50 jobs FileStager
* Optimization and Site Stress test: On demand and dedicated to sites which are interrested.  
+
* Optimization and Site Stress test: on demand and dedicated to sites which are interrested.  
 +
** Feb 4-5 (to be planned)
 
  GRIF : GRIFOPN test (as soon as it is available) Total of 1000 jobs will
 
  GRIF : GRIFOPN test (as soon as it is available) Total of 1000 jobs will
 
  be distributed to ATLAS CEs with following DS available being accessed
 
  be distributed to ATLAS CEs with following DS available being accessed
Ligne 15: Ligne 16:
 
         - GRIF-LPNHE_MCDISK: 334
 
         - GRIF-LPNHE_MCDISK: 334
 
         - GRIF-LAL_MCDISK: 457
 
         - GRIF-LAL_MCDISK: 457
  LPC : to be planned when new storage arrays installation and network 
+
  LAPP-CPPM : interrested by a stress test ~200-300 jobs
      upgrade done
+
  LPSc : interrested by a stress test ~200-300 jobs 
      DS available on IN2P3-LPC_MCDISK: 326
 
  LAPP-CPPM : interrested by a stress test ~130 DS available there
 
 
  TOKYO : Input DS available on TOKYO-LCG2_MCDISK: 1000
 
  TOKYO : Input DS available on TOKYO-LCG2_MCDISK: 1000
  

Version du 10:44, 29 janvier 2009

29.01.09

FR Cloud ST (2009 plans)

GRIF : GRIFOPN test (as soon as it is available) Total of 1000 jobs will
be distributed to ATLAS CEs with following DS available being accessed
from LAL, SACLAY and LPNHE
       - GRIF-SACLAY_MCDISK: 332
       - GRIF-LPNHE_MCDISK: 334
       - GRIF-LAL_MCDISK: 457
LAPP-CPPM : interrested by a stress test ~200-300 jobs 
LPSc : interrested by a stress test ~200-300 jobs  
TOKYO : Input DS available on TOKYO-LCG2_MCDISK: 1000

Input DS available

  • Thanks to Stéphane, followong DS available at sites (27/01/09):
{'TOKYO-LCG2_MCDISK': 1038, 'IN2P3-LPC_MCDISK': 342,
'IN2P3-CPPM_MCDISK': 185, 'GRIF-SACLAY_MCDISK': 369,
'GRIF-LPNHE_MCDISK': 380, 'IN2P3-LAPP_MCDISK': 284,
'IN2P3-LPSC_MCDISK': 143, 'GRIF-LAL_MCDISK': 493,
'RO-02-NIPNE_MCDISK': 184, 'BEIJING-LCG2_MCDISK': 129,
'RO-07-NIPNE_MCDISK': 171}

File access modes used by Ganga Jobs

Currently if users are submitting Ganga jobs with the LCG backend, the posix I/O access is the default method to access files (j.inputdata.type='DQ2_LOCAL')

One of the alternative access mode used by ST tests is the FileStager mode, which copies the input files in a background thread of the athena event loop usinglcg-cp from the local SE to the worker node tmp area. (j.inputdata.type='FILE_STAGER') This mode still needs a bit of improvements to gain full stability, but as demonstrated good performance at some (but not all) sites. Two access modes may be used during ST tests.