The Dashboard project for LHC experiments aims to provide a single entry point to the monitoring data collected from the distributed computing systems of the LHC virtual organizations. The Dashboard system (http://lhcdashboard.cern.ch) is supported and developed in the CERN IT.
Collected data are sent to the servers of the Dashboard system, where they are combined with data from other sources (the job submission tools, job wrappers and so on). It allows to get the right general picture of functioning of the infrastructure and the work of virtual organizations.
While developing and improving the Dashboard system, the analysis and systematization of diagnostic messages about errors on aborted jobs in the grid environment were made. It resulted to changes and additions in the relevant tables of the of Dashboard system database.
In the process of creating a visualization system for monitoring grid infrastructure, a new functionality was developed and implemented in Dashboard using the Google Earth application for dynamic monitoring in real time. Users have the ability to monitor the status of the WLCG in their own Google Earth setup.
Participation in the Dashboard system development.
From the 2007 the LIT JINR staff members contribute in the development of this system in the frames of collaboration with the CERN. For example, the package to monitor jobs submitted to the Condor distributed processing system is developed. It allows monitoring and organizing an effective execution of virtual organizations jobs on the infrastructure Open Science Grid (OSG). The data about the jobs (status, details of submission and execution, error messages) are collected and processed in full accordance with the structure of the information that is used in the Dashboard system. All significant events related to changes in the status of each running job at each stage are tracked. While developing and improving the Dashboard system, the analysis and systematization of diagnostic messages about errors on aborted jobs in the grid environment were made. It resulted to changes and additions in the relevant tables of the of Dashboard system database. The tables on CMS grid-sites and CMS Computing Elements (CE) have been improved. Testing of possibility to use information on jobs with the use of grid-service L&B (Logging and Bookkeeping) has been carried out.