Programmable Grids Framework Enabling QoS in an OGSA Context

摘要

Configuring, monitoring and guaranteeing service levels is a key prerequisite towards supporting the wave of emerging Grid computing applications, especially those relating to e-business. Managing QoS across a Grid infrastructure is particularly complex since QoS must be addressed at three different levels: network, middleware and application. Programmable Grids extend programmable networks concepts to Grid infrastructures and can alleviate this complexity. In this paper we elaborate on the importance of network, middleware and application level QoS, and accordingly provide a framework for designing and implementing programmable APIs that can handle QoS. The framework leverages the structure and properties of OGSA services, while exploiting functionality of OGSI containers. Moreover, early implementation experiences with this framework and Globus (GT3) are reported.