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Compatibility Testing of EMI Worker Nodes for Production and Analysis Frameworks

The transition to EMI-X requires testing of Worker Nodes (WNs) with production and analysis frameworks. ATLAS efforts are summarized on the provided link, noting the importance of testing both types of frameworks, including direct I/O. Few sites have reported testing, with an emphasis on SE flavor. EMI-1/2 validated for Prod and Analysis against DPM; StoRM validated against EMI-1. EMI-2 testing ongoing, while dCache and EOS remain untested. A proposal suggests installing EMI WNs on CVMFS for testing. Asoka will lead the deployment in CVMFS. Volunteers needed to test unreported combinations.

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Compatibility Testing of EMI Worker Nodes for Production and Analysis Frameworks

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  1. EMI-X WN transition Simone Campana

  2. We agreed with WLCG that experiments will test ASAP the compatibility of the EMI WNs with the production and analysis frameworks • ATLAS efforts are summarized in • https://twiki.cern.ch/twiki/bin/viewauth/Atlas/MWIntegration • Need to test both prod and analysis, also with direct I/O in some cases • then the SE flavor is important • Few volunteer sites have tested and reported • A particular thanks to Alessandra and Alessandro. Borut promised infinite “gratitude” to participants • Some combinations have been tested and not reported (please report) • Some combinations have not been tested (see later)

  3. Status: • EMI-1/2 against DPM has been validated for Prod and Analysis • w/o directIO, not used at the moment • would be good to test against xrootd (another story) • StoRM validated (not reported) against EMI-1 • EMI-2 under test (queue exists at CNAF) • dCache and EOS untested • Not easy to find a site • Proposal from Rod • Install EMI WN on CVMFS and test from there (then we can also use it in production) • We had it as a plan since quite some time • Asoka will deploy it in CVMFS • We have no official TARBALL, will create one from RPMs. • In the meanwhile, if a dCache site is willing to test, please do and report.

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