Difference between revisions of "Atlas"

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* [[ Atlas:Logbook| Logbook ]]
 
* [[ Atlas:Logbook| Logbook ]]
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* Current conclusion
 +
** Enabling direct access creates much more network usage -> Is it usefull for ATLAS ? (processing urgent request faster ?)
 +
** Job brokering prefers direct access than Rucio/FTS transfer
 +
** 10 Gb/s connection LAPP-CC (used for all LAPP WAN transfers to any site) can get saturated if huge amount of jobs starting at same time (No smoothing by Panda)
 +
 +
* Next steps
 +
** Monitor job efficiency vs RTT between SE and WN -> Identify when cache does not have impact (assuming no network bandwidth limitation)
 +
** Understand the ATLAS job borkering algorithm

Version du 16:14, 15 septembre 2018

Bienvenue sur la page Atlas LCG-France
Welcome to the LCG-France Atlas page

DOMA_FR tests

  • Global transfers from/ to (same site dest/source site excluded)
Header text LAPP LPSC CC
From

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To

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  • Data access monitorings per WN
Destination of access LAPP LPSC CC
Production download

Link

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Production input

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Analysis Download

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Analysis Direct Access

link

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Link

  • Current conclusion
    • Enabling direct access creates much more network usage -> Is it usefull for ATLAS ? (processing urgent request faster ?)
    • Job brokering prefers direct access than Rucio/FTS transfer
    • 10 Gb/s connection LAPP-CC (used for all LAPP WAN transfers to any site) can get saturated if huge amount of jobs starting at same time (No smoothing by Panda)
  • Next steps
    • Monitor job efficiency vs RTT between SE and WN -> Identify when cache does not have impact (assuming no network bandwidth limitation)
    • Understand the ATLAS job borkering algorithm