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EU DataGrid Testbed Overview: Software, Management, Releases

Official launch and structure of EU DataGrid project, software release process, authorization procedures, and additional information resources.

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EU DataGrid Testbed Overview: Software, Management, Releases

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  1. EU DataGrid Testbed • EU DataGrid • Software releases • Testbed 1 Job Lifecycle • Authorisation at your site • More EDG and TB information Andrew McNab - Manchester HEP - 22 April 2002

  2. EU DataGrid • Officially started 1st January 2001 • Partners: CERN, CNRS, ESA, INFN, NIKHEF, PPARC • Other contributions from HEP institutes (eg in NorduGrid countries) and other Grid projects (eg core UK e-Science) • Management and software organised into Work Packages: • WP1 Resource Management (“job submission”) • WP2 Data Management • WP3 Information and Monitoring Services • WP4 Fabric Management (eg local installation and management tools) • WP5 Mass Storage • WP6 Testbeds (include Integration and support for the Testbed grid.) • WP7 Networking • WP8,9,10 Applications Andrew McNab - Manchester HEP - 22 April 2002

  3. Software Releases • Have 3 major releases to coincide with three yearly Testbeds 1, 2 and 3 • Have minor releases every 2 months, and then patch level releases between those: currently at 1.1.4 (deployed last week) • Currently, the only supported platform is RedHat 6.2 on Intel. • Software is stored in a central CVS and published via a public HTTP server (http://datagrid.in2p3.fr) in RPM format. • This includes EDG-authored software, a distribution of Globus (contributed by GridPP) and any external packages and updates not included in out-of-the-box RedHat 6.2. • The official installation procedure is to use LCFG, contributed by Edinburgh and customised by WP4. • Once an LCFG server is working at your site, installation of testbed machines is automated (rather like RedHat kickstart.) See Steve’s talk for details. Andrew McNab - Manchester HEP - 22 April 2002

  4. Andrew McNab - Manchester HEP - 22 April 2002

  5. Authorisation at your site • a.k.a “how do I maintain the list of certificate names (people) that can use my Testbed site?” • WP6 provides a standard way of publishing lists of certificate names via an LDAP server, and selecting subsets based on group or “Virtual Organisation” (eg experiment) affiliation. • gridmapdir patch to Globus provides dynamic user account allocation from a pool. • Each LHC experiment maintains a “VO Server” and populates it with the DNs of their members. • VO’s also exist for WP6, BaBar and GridPP. Andrew McNab - Manchester HEP - 22 April 2002

  6. More information • Main EDG site is http://www.eu-datagrid.org/ • each Work Package has a website, usually with documents, mailing list archives etc about its software. • WP6 Testbed information at http://marianne.in2p3.fr/ • includes links to software repository, User and Installation Guides, bug tracking Bugzilla etc. • UK Testbed support: http://www.gridpp.ac.uk/tb-support/ • has info about tb-support@jiscmail.ac.uk mailing list, Steve’s notes about LCFG and other practical information. Andrew McNab - Manchester HEP - 22 April 2002

  7. Summary • EDG producing middleware components as part of a consistent distribution for testbed sites. • Situation evolving rapidly, but central aim of job submission “to the Grid” via a Resource Broker is working. • Software available to interested sites, and web and mailing list resources exist for support. • See following talks for details. Andrew McNab - Manchester HEP - 22 April 2002

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