1. Bookkeeping data Monitoring info Get jobs Site A Site B Site C Site D Agent Production service Monitoring service Bookkeeping service Agent © Andrei Tsaregorodtsev DIRAC Architecture

2. Application packager Application packager Workflow editor Workflow editor Production editor Production editor Production manager Production DB Production preparation Edit Instantiate workflow Create application tar file Central Services Monitoring DB Monitoring DB Bookkeeping DB Bookkeeping DB Production resources Agent A Site A Agent n Site n … Job XML Job XML Job status Job status Meta XML Meta XML Castor MSS CERN Castor MSS CERN Dataset replica Dataset replica Agent B Site B Central Storage Job request Job request Bookkeeping Service Bookkeeping Service Monitoring Service Monitoring Service Production Service Production Service

3. Batch Frontend GRID UI CERN services Personal Agent DIRAC Personal Desktop Personal Agent DIRAC Personal Desktop Job DIRAC Personal Interface GRID UI SSH Batch SSH

4. Personal Desktop Personal Agent Module Editor Step Editor Workflow Editor Production Manager Monitoring Manager Job Dependency Service Job Submission Service File Storage Service File Distribution Service Monitoring Service DIRAC PI Architecture

5. Module Step Workflow Job Production DIRAC Object Relationship

6. Module Editor Step Editor Workflow Editor Production ManagerMonitoring Manager ? ? ? DIRAC Personal Desktop