Abstract: This paper presents an application monitoring infrastructure
developed within the CrossGrid project. The software is aimed at enabling
performance measurements for the application developer and in this way
facilitating the development of applications in the Grid environment. The
application monitoring infrastructure is composed of a distributed monitoring
system, the OCM-G, and a performance analysis tool called G-PM. The OCM-G is an
on-line, grid-enabled, monitoring system, while G-PM is an advanced graphical
tool which allows to evaluate and present the results of performance
monitoring, to support optimization of the application execution. G-PM supports
build-in standard metrics and user-defined metrics expressed in the Performance
Measurement Specification Language (PMSL). Communication between the G-PM and
the OCM-G is performed according to a well-defined protocol, OMIS (On-line
Monitoring Interface Specification). In this paper, the architecture and
features of the OCM-G and G-PM are described as well as an example of use of
the monitoring infrastructure to visualize the status and communication in the
application, to evaluate the performance, including discovering the reason of
the performance flaw.
