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Interoperability With EGEE

Why interoperate with EGEE?

"The OSG Consortium builds and operates the OSG. The Consortium was formed in 2004 to bring resources and researchers from universities and national laboratories together to give scientists from many fields access to shared resources worldwide." (Source) Interoperation with EGEE will allow scientists access to the OSG shared resources, helping to fulfill one of OSG's goals.

Information services

OSG installations have the Generic Information Provider (GIP) configured automatically. The GIP provides information to the CEMon (CEMonitor) service. The CEMonitor service pushes collected information in ClassAd format to a central Information Gatherer (IG) running on designated host (osg-ress-1.fnal.gov). IG advertises these classads to the Condor Match Maker service which also runs on osg-ress-1.fnal.gov. (For OSG-ITB it is osg-ress-4.fnal.gov). CEMon also is configured by default to publish GIP data in "RAW" (LDIF) format to the OSG BDII at the GOC.

For more information about the CEMon service, see the CEMon On Compute Element? topic.

The production CEMon/BDII page and the ITB CEMon/BDII page display the incoming information provided by the GIP via CEMon and the served BDII data.

The production EGEE information service checks http://vors.grid.iu.edu/cgi-bin/show_ldap_info.cgi for a list of OSG sites that should be included for interoperability. The OSG BDII is queried regularly to keep the EGEE information current. A similar listing for the ITB feeds the EGEE PPS information system.

Accounting services

Gratia? collects grid accounting information and provides an interface to publish that information. The Accounting And WLCG topic describes how EGEE receives and utilizes the OSG grid accounting information.

Site availability monitoring

EGEE runs Service Availability Monitor (SAM) tests to determine availability. Availability is defined in depth at http://goc.grid.sinica.edu.tw/gocwiki/SAM_Metrics_calculation.

More information

OSG Central Information Services
OSG VORS Validate Your System In VORS?


Complete: 3
Responsible: BurtHolzman - 23 Oct 2007
Reviewer - date: AnthonyTiradani - 12 June 2008
Comment:
Review status: DONE

Topic revision: r14 - 07 Dec 2010 - 15:20:35 - X509_2fDC_3dorg_2fDC_3ddoegrids_2fOU_3dPeople_2fCN_3dKyle_20A_2e_20Gross_20453426
 
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