Paper Details

Adapted OS Link / DS Link Protocols for Use in Mutliprocessor Routing Networks

Authors: Triger, S., O'Neill, Brian C., Clark, S.

Abstract:

Inter-processor communications play a vital role in the performance of distributed parallel networks. This document analyses various protocol options for high speed, serial, inter-processor communications for use in embedded multiprocessor systems. The protocol is used to pass information in a fault tolerant routing network. The work has resulted in a custom processor interface, which forms the gateway between the processing node and the distributed communications network, building on previous work. The role of the interface is to provide maximum hardware support for communications between the network and the processor. This alleviates the processor from having to oversee communications transactions and allows it to concentrate on program execution. The research focuses on protocol alterations aimed at improving the fault tolerant aspects of the design when dealing with various forms of network failure. By improving the fault tolerance of the network, communications bottlenecks can be avoided and data throughput can be maximised. Previously, communications across the network had used the OS Links protocol and, experimentally, DS Links. These were analysed and adapted to provide the current communications protocol, which is compared with these protocols. This protocol is more efficient, and helps to provide many features to ensure data integrity.

Proceedings:

Communicating Process Architectures 2001, Alan G. Chalmers, Majid Mirmehdi, Henk Muller, 2001, pp 37 - 48 published by IOS Press, Amsterdam

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