Abstract
In previous work, the authors presented a 3D hexagonal wireless direct-interconnect network for a massively parallel computer, with a focus on analysing processor utilisation. In this study, we consider the characteristics of such an architecture in terms of link utilisation and power consumption. We have applied a store-and-forward packet-switching algorithm to both our proposed architecture and a traditional wired 5D direct network (the same as IBM’s Blue Gene). Simulations show that for small and medium-size networks the link utility of the proposed architecture is comparable with (and in some cases even better than) traditional 5D networks. This work demonstrates that there is a potential for wireless processing array concepts to address High-Performance Computing (HPC) challenges whilst alleviating some significant physical construction drawbacks of traditional systems.
Highlights
In an High-Performance Computing (HPC) system there is a constant need for increasing the density of processors within a given volume
Considering new developments in on-chip high-speed wireless devices, we are close to a viable wireless interconnect network for a massively parallel computer
The network can only grow along the first three axes (x, y and z). Such a topology decreases the number of hops compared to the 3D topology for Jl.aSregnes. nAecttuwatoorrNkset.wF. o20r18th, 7e, 1r8est of this paper we only focus on the 3D A Ball Computer (ABC) architecture
Summary
In an HPC system there is a constant need for increasing the density of processors within a given volume. Wireless technologies have not been regarded as serious options for an interconnect network in high-performance computing far. In our previous papers [4,5] a 3D wireless grid was introduced for a novel parallel platform called A Ball Computer (ABC) It can scale since there is no wiring limitation. The ABC envisages a computer system made of balls (1–2 cm in diameter) each containing computing and communicating elements that can be rapidly and cheaply assembled It supports a wireless 3D hexagonal lattice of a substantial number of processors, which can operate as a massively parallel platform.
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