Difference between revisions of "Atlas:Analysis ST 2009"

Un article de lcgwiki.
Jump to: navigation, search
(FR Cloud ST (2009 plans))
Ligne 1: Ligne 1:
 
29.01.09
 
29.01.09
=== FR Cloud ST (2009 plans) ===
+
== FR Cloud ST (2009 plans) ==
 
* [http://lcg.in2p3.fr/wiki/index.php/Atlas:Analysis_Challenge_ST  Details of Site Stress test] : procedure, test conditions and targets
 
* [http://lcg.in2p3.fr/wiki/index.php/Atlas:Analysis_Challenge_ST  Details of Site Stress test] : procedure, test conditions and targets
 
* [http://lcg.in2p3.fr/wiki/index.php/Atlas:Analysis_ST_2009#section=3  File access modes used by ST]  
 
* [http://lcg.in2p3.fr/wiki/index.php/Atlas:Analysis_ST_2009#section=3  File access modes used by ST]  
Ligne 21: Ligne 21:
 
  LPSC : interrested by a stress test ~200-300 jobs
 
  LPSC : interrested by a stress test ~200-300 jobs
  
=== Input DS available ===
+
== Input DS available ==
 
* Thanks to Stéphane, followong DS available at sites (27/01/09):
 
* Thanks to Stéphane, followong DS available at sites (27/01/09):
 
  {'TOKYO-LCG2_MCDISK': 1038, 'IN2P3-LPC_MCDISK': 342,
 
  {'TOKYO-LCG2_MCDISK': 1038, 'IN2P3-LPC_MCDISK': 342,
Ligne 29: Ligne 29:
 
  'RO-02-NIPNE_MCDISK': 184, 'BEIJING-LCG2_MCDISK': 129,
 
  'RO-02-NIPNE_MCDISK': 184, 'BEIJING-LCG2_MCDISK': 129,
 
  'RO-07-NIPNE_MCDISK': 171}
 
  'RO-07-NIPNE_MCDISK': 171}
=== File access modes used by Ganga Jobs ===
+
== File access modes used by Ganga Jobs ==
 
Two access modes may be used during ST tests.
 
Two access modes may be used during ST tests.
 
* '''(j.inputdata.type='DQ2_LOCAL')''' : 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')''' : 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='FILE_STAGER')''' : 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. This mode still needs a bit of improvements to gain full stability, but as demonstrated good performance during ST at some (but not all) sites.
 
* '''(j.inputdata.type='FILE_STAGER')''' : 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. This mode still needs a bit of improvements to gain full stability, but as demonstrated good performance during ST at some (but not all) sites.

Version du 12:41, 29 janvier 2009

29.01.09

FR Cloud ST (2009 plans)

GRIF : GRIFOPN test - 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

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

Two access modes may be used during ST tests.

  • (j.inputdata.type='DQ2_LOCAL') : 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='FILE_STAGER') : 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. This mode still needs a bit of improvements to gain full stability, but as demonstrated good performance during ST at some (but not all) sites.