Monitoring of interactive Grid applications

This paper presents the OCM-G, a Grid application monitoring system. The OCM-G is aimed to provide services via which tools supporting application development are enabled to gather information, manipulate, and detect events that occur when applications are running. The functionality of the OCM-G is available via a standardized interface. On-line Monitoring Interface Specification (OMIS). The OCM-G is designed to work in a Grid environment. This implies a distributed and decentralized design which allows for a large-scale scalability and capability to handle multiple applications, users and tools at the same time, while ensuring security. The design of the OCM-G assumes that one part of it is permanent which allows it to work as a Grid service and additionally enables communication through firewalls, whereas another part is transient and private to each Grid user, what solves the major security problems. In the paper, we provide a short overview of OMIS, describe the design of the OCM-G and discuss Grid-specific requirements including necessary OMIS extensions as well as security issues.