Mobile Analyzer A Distributed Computing Platform Juho Karppinen Helsinki Institute of Physics Technology Program May 23th, 2002 Mobile Analyzer - A Distributed Computing Platform, May 23th, 2002, (1)

Overview Distributed computing platform Designed for need of high energy physics Can be used to analyze vast amounts of data stored in a distributed fashion Agent based concept Implemented using Java Mobile Analyzer - A Distributed Computing Platform, May 23th, 2002, (2)

Basic idea User provides java code and description of needed data Data is found automatically using intelligence implemented to LDAP directories Agents (analysis code) are sent where the data is and executed Only status messages and results are sent back Mobile Analyzer - A Distributed Computing Platform, May 23th, 2002, (3)

Architecture Mobile Analyzer - A Distributed Computing Platform, May 23th, 2002, (4) Network LDAP Server 2 Server 3 Client public void processEvent (Event e) { if( e.getColumn( RMC )) … } Data ranges to process: , Proxy Server 1 Client computer gives access point User supplied data The code to run and a description of required data Resource information server Runs “yellow pages” for needed resources Proxy server(s) Autonomous job dispatching, result saving and status monitoring Analysis servers Computers which have data and computing power for users

Technology overview Uses Grid Security Infrastructure for security and authentication Agents uses Java Analysis Studio – interface with some modifications Supports JAS compatible data sources and custom ones, like Objectivity Uses own XML-based agent platform for communication Mobile Analyzer - A Distributed Computing Platform, May 23th, 2002, (5)

Benefits Supports truly heterogeneous hardware environments (Solaris, Linux, Windows,...) Uses existing Java Analysis Studio and GSI -interfaces Reduced workload for the user as the data location does not need to be known Not only restricted to physics analysis. Agents gives lots of possibilities, ex real- time graphical cluster status monitoring. Mobile Analyzer - A Distributed Computing Platform, May 23th, 2002, (6)

Current status Support for off-line execution of jobs Can access private networks or clusters through proxy server Integration with CMSIM through GridPortal, allows automated verification of results right after simulations are finished Command line utilities Mobile Analyzer - A Distributed Computing Platform, May 23th, 2002, (7)

Conclusion Mobile Analyzer has lots of potential in future. Be aware! More information Demonstration during breaks or Mobile Analyzer - A Distributed Computing Platform, May 23th, 2002, (9)