EU Data Grid Testbed EU Data Grid Software
EU Data. Grid Testbed • • • EU Data. Grid Software releases Testbed 1 Job Lifecycle Authorisation at your site More EDG and TB information Andrew Mc. Nab - Manchester HEP - 22 April 2002
EU Data. Grid • Officially started 1 st January 2001 • Partners: CERN, CNRS, ESA, INFN, NIKHEF, PPARC • Other contributions from HEP institutes (eg in Nordu. Grid countries) and other Grid projects (eg core UK e-Science) • Management and software organised into Work Packages: – – – – WP 1 Resource Management (“job submission”) WP 2 Data Management WP 3 Information and Monitoring Services WP 4 Fabric Management (eg local installation and management tools) WP 5 Mass Storage WP 6 Testbeds (include Integration and support for the Testbed grid. ) WP 7 Networking WP 8, 9, 10 Applications Andrew Mc. Nab - Manchester HEP - 22 April 2002
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 Red. Hat 6. 2 on Intel. • Software is stored in a central CVS and published via a public HTTP server (http: //datagrid. in 2 p 3. fr) in RPM format. • This includes EDG-authored software, a distribution of Globus (contributed by Grid. PP) and any external packages and updates not included in out-of-the-box Red. Hat 6. 2. • The official installation procedure is to use LCFG, contributed by Edinburgh and customised by WP 4. • Once an LCFG server is working at your site, installation of testbed machines is automated (rather like Red. Hat kickstart. ) See Steve’s talk for details. Andrew Mc. Nab - Manchester HEP - 22 April 2002
Andrew Mc. Nab - Manchester HEP - 22 April 2002
Authorisation at your site • a. k. a “how do I maintain the list of certificate names (people) that can use my Testbed site? ” • WP 6 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 WP 6, Ba. Bar and Grid. PP. Andrew Mc. Nab - Manchester HEP - 22 April 2002
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. • WP 6 Testbed information at http: //marianne. in 2 p 3. fr/ – includes links to software repository, User and Installation Guides, bug tracking Bugzilla etc. • UK Testbed support: support/ http: //www. gridpp. ac. uk/tb- – has info about tb-support@jiscmail. ac. uk mailing list, Steve’s notes about LCFG and other practical information. Andrew Mc. Nab - Manchester HEP - 22 April 2002
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 Mc. Nab - Manchester HEP - 22 April 2002
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