ACSys/RDN experiences with Telstra’s experimental broadband network, first progress report

This report summarises our experiences with the EBN and provides an indication of where we are now. We don’t present a set of detailed performance measurements in this report, instead we focus primarily on bandwidth utilisation and network management. We are currently producing a more comprehensive set of performance measurements, which will be presented in a subsequent report

An Investigation of Flexible Communication Infrastructure in a Distributed High Performance Computing Environment

Wide area distributed high-performance computing environments are becoming more important due to their cost-effective and flexible nature. This paper presents the results of an investigation into the communication system called Nexus in utilizing computing resources in such an environment. We specifically focus on the expressiveness and efficiency of the Nexus system in the construction of wide area applications. We describe the construction of client/server applications using Nexus, Nexus' support for peer to peer server relationships and the construction of a Nexus directory server prototype based on the Nexus client/server technology. One powerful and unique facility that Nexus provides is support for multiple communication methods. However, our investigations revealed that the Nexus design does not fully meet our specific application requirements. Thus, we have incorporated a technique, based on a suitable cost function, to dynamically choose between alternative communication metho..