EMI is partially funded by the European Commission under Grant Agreement RI-261611

Recent ARC developments in the EMI project

Andrii Salnikov, Ievgen Sliusar

UNG 2012, November 1

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Road behind ARC

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First grid clustersin Ukraine:

KIPT, BITP, KNU

First grid segment of NASU

UAG

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EMI goal

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Standards,New technologies,

Users and Infrastructure Requirements

EMI common products

3 yearsBefore EMI After EMI

Implemented Agreements

Repositories

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CE: EMI-ES (CREAM, A-REX, UNICORE/X)IS: GLUE2 XML and LDAP renderingII: EMI Registry (EMIR)SE: SRM v2.2 (dCache, DPM, StoRM)Accounting: APELEMI Clients: ARC ClientsEMI DataLib: GFAL2EMI Security: VOMS, caNl

EMI Standards

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A-REX

Job management interfaces:• gridFTP (old one, globus-

based, will be dropped)• xBES (OGSA WS-interface,

not really used)• EMI-ES

Secure, Robust, Feature-rich CERuns on any UNIX/Linux platformsNo impact on other OS componentsSupport various batch systemsEasily extendable by plugins

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ARIS

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LDAP NorduGrid LDAP Glue1.3 GLUE2

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ARC service discovery

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NorduGrid LDAP OnlyPerformance Issues

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SE: ARC withdrawn own SE implementation, but works well with existing ones.Accounting to APEL: JURA (almost there).ARC Clients as EMI Clients: fully interoperable with GLUE2 and EMIR. Ongoing performance improvements and more testing.EMI DataLib: ARC DataLib is able to employ GFAL2 (code is finished), but packaging issues exist.EMI Security: caNl++ is finished, client-side integration for arcproxy tool only, same problems with packaging.

Other components

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Documentation

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Total sites in EGIIS: 33Sites in giis.grid.org.ua EGIIS: 28Sites in lcg.bitp.kiev.ua EGIIS: 20

Sites with GLUE2: 5Sites with EMI-ES: 4

UNG ARC Deployment

failed - 30.6.1 - 10.6.5 - 40.8.1 - 10.8.1.1 - 10.8.3 - 10.8.3.1 - 51.0.1 - 11.1.0 - 42.0.0 - 12

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• Update to EMI-2 ARC and keep it up to date• Enable GLUE2 and EMI-ES• Read the manual and find advanced

configuration use-cases to efficiently utilize cluster resources• EMIR deployment in Ukraine (almost there)• Enable accounting (SGAS and APEL)• Use the latest EMI clients!

Moving the right way

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ARC components:nordugridmapPBS batch system backendsplugins for advanced use-casesdocumentationlots of bug-reports and bug-fixesStand-alone solutions:PHP VOMS-Admin

Our contribution

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Questions?

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