A novel Interconnection Network Architecture is proposed for integrating tightly coupled Distributed Systems. It allows the implementation of Service Address Routing(SAR): network communications between components are based on the "name" of requested services. It is a client-server communications model, and optionally includes the traditional physical addressing schemes. This enhanced network architecture registers the capabilities of the components attached to its ports and directs service requests to appropriate server nodes. The Network can perform Resource Allocation by placing services in nodes that can support them. Load Distribution is achieved by binding requests to adequate servers with enough free resources. Furthermore, SAR effects a simple, yet efficient and transparent resource discovery mechanism by means of a distributed content-addressable search at each network port. A scalable implementation for computer clusters is proposed which uses the Least-Common-Ancestor Networks (LCANs) as the model for the hierarchical interconnect. At the end of this work, an analysis based on theoretical examination and experimental testing is carried out; scalability and cost-effectiveness of the proposed Service-Address-Routed Least-Common-Ancestor Networks are thus examined.
Towards a Cost-Effective Interconnection Network Architecture with QoS and Congestion Management Support
