A Semantic Grid with Automated Virtual Organization Management

Abstract

Desktop Grid has recently been an attractive computing paradigm for high throughput applications. Desktop Grid can be considered as a P2P (i.e. peer-to­ peer) computing environment; where each node acts as a peer, so that, itcan act as a resource provider (i.e. Grid Worker) or as a resource consumer (i.e. Grid Client). However, Desktop Grid computing is complicated by heterogeneous capabilities, failures, volatility, and lack of trust because it is based on desktop computers. In a Desktop Grid computing environment, workers have heterogeneous properties such as CPU, memory, network, etc. Decentralization, Interoperability, scheduling, Connectivity and Fault tolerance are important issues ofDesktop Grid. The most important challenges for Desktop Grid involve: 1) minimizing reliance on central servers to achieve decentralization, 2) providing interoperability with other platforms, 3) providing interaction methodologies between grid nodes that overcome connectivity. problems in the Internet environment, 4) providing efficient fault tolerance to maintain performance with frequent faults, and 5) developing scheduling mechanisms that adapt to such a dynamic computing environment. Although, several techniques had been