Presentations

IT-DSS

• Repack 2

IT-GD

• Result of latest Grid Information System System Performance Test : PPT here
• CASTOR, White Paper Lectures : PPT here
• Role and work within the group, Grid Deployment Group Meeting : PPT here
• Introduction to NagiosGrapher, WLCG Collaboration Workshop April 2008 PPT here
• GLUE SQL Rendering,OGF 2008 Barcelona PPT here
• GLUE 2, EGEE 2008 Istanbul PPT here
• Patch Release Procedure, White Area Lecture PPT here, PDF here

BE-CO

• Jms Status Report 2009 PPT here
• Jms Status Report 2010
• Deployment Standartization Update, BE-AP, 2010
• Jms Status Report 2011
• The Deploy Tool, BE, June 2011
• JMS in BE, Presentation in IT-GD May 2010
• The CMW Tracing Service Progress & Evolution, BE-CO TC, 28th June 2012
• CMX - A Way to Get More Control Over Your C/C++ service, BE-CO TC, 28th June 2012
• Remote Tracing Facility for Distributed Systems, ICALEPCS 2011, 14th October 2011
• Remote Tracing Facility for Distributed Systems, BE-CO TC, 16th June 2011
• Activemq for controlling CERN’s Accelerator Complex, FuseSource Visit @ CERN, 2011
• Large Scale Messaging with ActiveMQ for Particle Accelerators at CERN, CamelOne Conference, Boston, 2012

• (Contrib) Usage of ActiveMQ at CERN, Fuse Community Day Paris Oct.2010

Publications

• GLUE 2.0 Specification, Sergio Andreozzi,Stephen Burke,Felix Ehm,Laurence Field,Gerson Galang,Balazs Konya,Maarten Litmaath,Paul Millar,JP Navarro OpenGridForum, PDF here
• Scalability and performance analysis of the EGEE information system, F. Ehm, L. Field and M. Schulz, Journal of Physics

Old Pages

gLite Release and Repository Management

• Preparation of Certification/PPS/Production repository for gLite
• Maintenance of gLite Webpage
• Release notes creation for PPS/Production
• Development/Maintenance of Repo scripts (RepoDevelArchievements)

GSTAT 2.0 Development

• Design of new architecture
• Creation of NAGIOS tests for BDII (https://twiki.cern.ch/twiki/bin/view/EGEE/GstatMetrics)
• Content validation ( https://twiki.cern.ch/twiki/bin/view/EGEE/GstatOverview )

GLUE 2.0 schema

• Storage schema discussion for GLUE 2.0 Phone Conference Infos, Draft Documents
• Desing of relational Model more Info
• Collect use cases for Storage schema + adding to existing use case document (Use Case Document)

Grid Information System (BDII)

LDAP stress Tool

CVS

Slapd Tests ( SLC3 OpenLDAP tests )

• outdated,since SLC3 is not supported anymore
• Analysis of the performance according to query datasize (SlapdAnalysis)
• Query on single thread while increasing load on slapd machine (SlapdAnalysisWithLoad)
• Introducing indexed database tables (SlapdIndexedDB)
• Comparison of indexed/non-indexed DB on a loaded machine (emulates scenario of the BDII on a Grid Computing Element) SlapdIndexedAnalysisWithLoad

Slapd Tests Part 2

• Introduction of new Test scripts and theirArchitecture (SlapdAnalysisPart2)
• Investigating test methodologies (OpenLDAPBenchmarkMethodology)
• Comparison of performance of OpenLDAP on midrange and high-end machine. SlapdMidrangeHighEndDiff
• Performance Test graphs Quadcore ( SlapdQuadcoreTest )
• Performance Test graphs DualCore ( SlapdDualCoreTest )

Replacement of the DB backend to Relational Engine

• Replacing the current LDAP schema to a relational one and running performance tests in comparison with current system. Oracle and MySQL are used to implement schema as a reference model - please find more information here : BDIIRelationalDBBackend

Comparison LDBM and BDB

• BDIIOpenLDAPBackendComparison