Publications:Fiber-ribbon ring network with services for parallel processing and distributed real-time systems
From CERES
| Title | Fiber-ribbon ring network with services for parallel processing and distributed real-time systems |
|---|---|
| Author | Magnus Jonsson and Carl Bergenhem and Jörgen Olsson |
| Year | 1999 |
| PublicationType | Conference Paper |
| Journal | |
| HostPublication | Proc. SNART'99 Real-Time Systems Conference |
| DOI | |
| Conference | |
| Diva url | http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:232644 |
| Abstract | In this paper, we present how real-time services are implemented in a control-channel based ring network built up of fiber-ribbon point-to-point links. Services for best effort messages, guarantee seeking messages and real-time virtual channels are supported for single destination, multicast and broadcast transmission by the network. Slot-reservation is used for the implementation of real-time virtual channels. High aggregated throughput can be achieved due to pipelining, i.e., data can be transmitted simultaneously in different segments of the ring. An analysis of worst-case latency and deterministic throughput, which are important measures for real-time service implementation, is provided. The network is analyzed for two variants of time-slot organization, one that offers higher throughput and one that offers lower latency in some situations. We also show how the network offers low-level support for parallel computing, i.e., barrier-synchronization and global reduction. The control channel is used when realizing these functions, which implies no modification of the original network architecture. Low-level support for reliable transmission is also offered in a similar manner. This includes acknowledge / negative acknowledge and flow-control. |
