DHPC Technical Report DHPC-048
An Investigation of Flexible Communication Infrastructure in a
Distributed High Performance Computing Environment
P.W.Tia, A.L.Wendelborn, and K.J.Maciunas
Archived: 3 August 1998
Published in Proc. of HPC Asia, Singapore, September 1998.
Abstract
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 methods. We also benchmarked Nexus
communication performance on a national experimental broadband ATM
network
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