Monitoring UNICORE jobs executed on Desktop Grid resources

The EDGI project builds a federation of Desktop Grid sites, which provide volunteer and institutional compute resources. EDGI offers these resources to gLite, ARC, and UNICORE user communities. The jobs can be directly bridged to the Desktop Grids via the standard gLite, ARC, or UNICORE interfaces. The paper focuses on the UNICORE side, especially on the monitoring aspect. A bridging mechanism has been implemented in a modified UNICORE computing element to forward jobs towards the Desktop Grid servers. This component is part of the EDGI infrastructure, where all the bridge-related components and resources are continuously monitored by a central monitoring system. The monitoring system provides information about the traffic among the sites in the infrastructure. The paper gives a short overview of the EDGI infrastructure, especially the monitoring system and introduces the technical details about how the monitoring is integrated and supported by the modified UNICORE computing element. The introduced solution is part of the EMI software stack to make it easily accessible for UNICORE infrastructure providers.