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- W2056583162 abstract "The performance of a multi-computer system based on the simultaneous optical multi-processor exchange bus (SOME-Bus) interconnection network is examined using queuing network models under the message-passing and distributed-shared-memory (DSM) paradigms. The SOME-Bus is a low latency, high bandwidth, fiber-optic interconnection network which directly links arbitrary pairs of processor nodes without contention. It contains a dedicated channel for the data output of each node, eliminating the need for global arbitration and providing bandwidth that scales directly with the number of nodes in the system. Each of N nodes has an array of receivers, with one receiver dedicated to each node output channel. No node is ever blocked from transmitting by another transmitter or due to contention for shared switching logic. The entire N-receiver array can be integrated on a single chip at a comparatively minor cost resulting in O(N) complexity. By supporting multiple simultaneous broadcasts of messages, the SOME-Bus has much more functionality than a crossbar, allowing synchronization phases and cache consistency protocols to complete much faster. Simulation results are presented which validate the theoretical results and compare processor utilization in the SOME-Bus, the crossbar and the torus, with and without synchronization. Compared to these two networks, the SOME-Bus performance is least affected by large message communication times. Even in the presence of frequent synchronization, processor utilization remains practically unaffected while it drops in the other architectures. Although it has a larger number of channels compared to the crossbar and the mesh, the SOME-Bus is much simpler and inexpensive because it is free of complex routing, congestion and blocking." @default.
- W2056583162 created "2016-06-24" @default.
- W2056583162 creator A5046375616 @default.
- W2056583162 date "2001-07-01" @default.
- W2056583162 modified "2023-10-16" @default.
- W2056583162 title "Performance analysis of the simultaneous optical multi-processor exchange bus" @default.
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- W2056583162 doi "https://doi.org/10.1016/s0167-8191(01)00071-0" @default.
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