Difference between revisions of "MUPJ"

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(Support of Multi-user pilot jobs (MUPJ) for LHC VOs)
(Support of Multi-user pilot jobs (MUPJ) for LHC VOs)
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     o strongly preferred by CMS and ATLAS
 
     o strongly preferred by CMS and ATLAS
 
  - Many sites prohibit bypassing glexec on internal errors (with some tolerance for the time being)
 
  - Many sites prohibit bypassing glexec on internal errors (with some tolerance for the time being)
 +
- Site concerns :
 +
      Batch jobs clean-up (complications of), some incompatibilities with afs in setuid mode, how can local users gets special share/priorities ?, strong concerns about MUPJ concept expresseb bu NorduGrid
 
  - Proposed actions :
 
  - Proposed actions :
 
     o sites should configure glexec with SCAS/Argus/GUMS backend and advertise it with GlueCECapability : glexec
 
     o sites should configure glexec with SCAS/Argus/GUMS backend and advertise it with GlueCECapability : glexec

Version du 15:56, 14 avril 2010

--Chollet 11:41, 27 janvier 2010 (CET)

Pilot jobs working group of the Technical Forum (wiki)

Support of Multi-user pilot jobs (MUPJ) for LHC VOs

In December 09, the WLCG Management Board asked the WLCG Technical Forum to provide recommendations on the use of multi-user pilot jobs, in particular on the deployment and configuration of glexec and its usage by the experiment frameworks.

MUPJ-SupportFR-2.png

- MUPJ in principle supported
- Most of the sites/resources compatible with glexec setuid 
    o many sites require it in the medium terms
    o strongly preferred by CMS and ATLAS
- Many sites prohibit bypassing glexec on internal errors (with some tolerance for the time being)
- Site concerns :
     Batch jobs clean-up (complications of), some incompatibilities with afs in setuid mode, how can local users gets special share/priorities ?, strong concerns about MUPJ concept expresseb bu NorduGrid 
- Proposed actions :
    o sites should configure glexec with SCAS/Argus/GUMS backend and advertise it with GlueCECapability : glexec
      glexec/SCAS testing chain in validation - new ops/role=pilot - will be integrated in the next release of national nagios
    o experiments should try out their glexec workflows at such sites as they become available
    o sites that do not support the setuid mode would no longer receive MUPJ 
    o others technologies (such as virtualization) may affect medium-term strategies

Links

  • Glasgow wiki page (glexec and SCAS installation and configuration)

https://www.scotgrid.ac.uk/wiki/index.php/Glasgow_GLite_gLExec_installation_and_configuration