1. INFSO-RI-508833 Enabling Grids for E-sciencE www.eu-egee.org www.glite.org Information and Monitoring Status and Plans GridPP16, QMUL, 29 Jun 2006 Steve Fisher/RAL

2. Enabling Grids for E-sciencE INFSO-RI-508833 Steve Fisher/RAL 2 R-GMA Status R-GMA is now working well –with experienced users Released a bad RPM recently –It had passed certification and time on PPS Shows that JRA1-UK testing is still inadequate Should have failed in certification on one of the tests we gave to SA3 Should have shown memory leak in fairly short time on PPS –Had to produce new RPMs with old code –Proper fix waiting for certification Used in various applications –as mentioned yesterday

3. Enabling Grids for E-sciencE INFSO-RI-508833 Steve Fisher/RAL 3 SD Status In production Untidy support as developed by Data Management and JRA1-UK within EGEE-I Only BDII plug-in currently configured Many services not correctly advertising Not enough services using the API

4. Enabling Grids for E-sciencE INFSO-RI-508833 Steve Fisher/RAL 4 Work-plan All JRA1 work must be approved by TCG TCG have a requirements list to be addressed Two requirements directly related to the JRA1-UK work. –Security: #101 - make use of VOMS groups and roles –Information System: #111 - to provide fast and reliable access to service end points. Work-plan approved a couple of weeks ago –Subject to a small change

5. Enabling Grids for E-sciencE INFSO-RI-508833 Steve Fisher/RAL 5 R-GMA Plans Design has some limitations which are hard to work around. Currently working on a new design which includes –Authz –Multiple VDB (name spaces) –Registry and schema replication –Support for Oracle and other RDBMS. –Easy to wrap as web service

6. Enabling Grids for E-sciencE INFSO-RI-508833 Steve Fisher/RAL 6 First release of new design No new functionality in first release Significant changes include: –The registry no longer sends out notifications. Should increase reliability Registry replication much simpler –Only one socket for streaming from one machine to another –Regular handling of remote invocation (time-outs etc) –Database independence –Managed tuple stores - essential to support authz –Multiple VDB support but no cross VDB queries Compatibility with previous releases –APIs must be able to work with old and new services –Services must be able to interoperate

7. Enabling Grids for E-sciencE INFSO-RI-508833 Steve Fisher/RAL 7 Subsequent releases Will provide in this sequence: 1.Queries over multiple VDBs –Almost standard SQL –Extension for Unions 2.Authz by VDB –This will make use of certificate attributes (VOMS groups/roles) –Database engine is used to implement parameterised views 3.Registry replication –Much easier now that registry is passive 4.Schema replication –Still to be designed – may not be easy 5.Oracle support –DB independence part of new design

8. Enabling Grids for E-sciencE INFSO-RI-508833 Steve Fisher/RAL 8 Service Discovery (SD) Plans We will work on more responsive SD by invoking the plug-ins in parallel. –Good for R-GMA as the fastest plug-in wins We are asked to support use of scripts calling utilities which use SD –Should utility do caching or the SD API? SD solution has to be general so heavier How many utilities to consider? Configuration-free SD being developed –Useful as a bootstrap mechanism it can locate the R-GMA server on the local subnet. Abdeslems talk to follow

9. Enabling Grids for E-sciencE INFSO-RI-508833 Steve Fisher/RAL 9 Time scales Hard to estimate: –Considerable effort can be "lost" in support. –JRA1-UK has a temporary but critical shortage of manpower. 4 resignations from the team in 3 months We had hoped to achieve by the end of this year: –queries over multiple VDBs and authz (using VOMS attributes) by VDB –R-GMA clients with the option of automatic configuration –SD caching or persuade utility providers to do it –Parallel invocation of SD plugins

10. Enabling Grids for E-sciencE INFSO-RI-508833 Steve Fisher/RAL 10 Mailing lists R-GMA-ANNOUNCE –Low volume for R-GMA announcements to users –Moderated –Replies go to JRA1-UK list JRA1-UK –Public JRA1-UK list R-GMA-SA1 –Similar to JRA1-UK but includes SA1 people –Created for discussing SA1 applications – e.g. GridView To subscribe to any of these lists: –http://www.physics.gla.ac.uk/mailman/listinfo/

11. Enabling Grids for E-sciencE INFSO-RI-508833 Steve Fisher/RAL 11 For more information… EGEE Web pages: http://hepunx.rl.ac.uk/egee/jra1-uk/http://hepunx.rl.ac.uk/egee/jra1-uk/ E-mail: jra1-uk@physics.gla.ac.ukjra1-uk@physics.gla.ac.uk