Enabling Grids for Escienc E Enduser Viewpoint of

Enabling Grids for E-scienc. E End-user Viewpoint of the EGEE Infrastructure using Grid. ICE Giuseppe Misurelli INFN-CNAF (Italy) giuseppe. misurelli<at>cnaf. infn. it EGEE User Tutorial, Bologna June 5°, 2007 www. eu-egee. org INFSO-RI-508833

Grid Resources Awareness Enabling Grids for E-scienc. E • Large Grid systems must provide its users with precise and reliable information about: – Status and Usage of available resources • The efficent distribution of this information enables VOs to: – Optimize their utilization strategies § How CPUs are distributed among sites § What about the status of the Grid sites – Complete the planned computations § How long my jobs take for running in a site § What about my jobs CPU/Wall time INFSO-RI-508833

What helps? Enabling Grids for E-scienc. E • Grid Monitoring tools help in the detection of: – Fault Situations § Status of available resources – VO activity § Usage of the available resources INFSO-RI-508833

Grid. ICE Enabling Grids for E-scienc. E • Overview: – a distributed monitoring tool for Grid systems § started in late 2002 (EU-Data. TAG project) § is evolving in the context of EU-EGEE and many other EU Grid projects § 100% open source – fully integrated with the g. Lite Middleware § Metering and publishing of data can be configured via g. Lite standard installation mechanisms § Self-configurable collection and presentation – Installed servers are monitoring Grid resources in the scope of: EGEE-SWE GILDA CMS ATLAS EUIndia. Grid Baltic. Grid INFSO-RI-508833 RDIG EGEE-SEE EUMed. Grid EELA Grid. it EUChina. Grid Be. Grid

Grid. ICE: Added Value Enabling Grids for E-scienc. E Information provided include – Grid summary info § Computing/Storage resources – VO activity § Job submission Information provided are accessible from – Web context § drill-down navigation – XML documents § Data exchange with other applications INFSO-RI-508833

End-user Viewpoint /1 Enabling Grids for E-scienc. E Grid Summary Info • Geographical composition – Geo view where sites are located with the actual job load • Resources availability – Site view to get downtime info – Site view to spot possible problems on § Grid Information Service § Grid services running on host machines • Resources inventory – VO view where computing and storage resources are aggregated per-VO INFSO-RI-508833

End-user Viewpoint /2 Enabling Grids for E-scienc. E End-user activity • Job section to track VO users activity in order to: – Search among a huge number of jobs – Inspect jobs resource consuption – Aggregate jobs info based on VOMS attributes (next release) § Info selected according with the consumer ID (group/role) INFSO-RI-508833

Ongoing and Future Work Enabling Grids for E-scienc. E • Data quality – Recent data quality analysis (performed in production environment) confirmed the expected level of correctness • Data access – Cooperation with external applications § Integration of Grid. ICE data into Experiment dashboard • Batch System data genereted by the job monitoring sensors • Web redesign – Next user experience will gain from Web 2. 0 principles, guidelines and technologies § Moving towards a Web Application experience INFSO-RI-508833

Conclusions Enabling Grids for E-scienc. E • In large Grid infrastructure VO end-users have not a clear awareness of the type, state and features of the resources constituting the Grid • Grid. ICE Web presentation can be accessed by VO endusers to obtain information related to Grid resources inventory and availability – The possibility to track VO end-user job submission activity has been recently integrated in the Grid. ICE tool • Grid. ICE takes into account W 3 C standards to improve the Web usability both at presentation and content levels INFSO-RI-508833

References Enabling Grids for E-scienc. E • Dissemination Web Site http: //grid. infn. it/gridice • W 3 C Standards - evergreen hint http: //www. w 3. org/QA/2002/07/Web. Agency. Requirements INFSO-RI-508833