An interprocessor communication scheme is a key to exploit parallel computers effectively. One of the efficient communication schemes on hypercubes is the two-phased randomized routingalgorithm. In this paper, the pe...
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ISBN:
(纸本)078031445X
An interprocessor communication scheme is a key to exploit parallel computers effectively. One of the efficient communication schemes on hypercubes is the two-phased randomized routingalgorithm. In this paper, the performance of this randomized routingalgorithm is studied. In addition, the performance of a deterministic routing algorithm, the greedy routingalgorithm is evaluated.
Due to its unique capability to communicate with long-distance communication processing cores in a single hop, on-chip wireless channels are utilized to reduce the network latency between the distant processing cores....
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ISBN:
(纸本)9781665456456
Due to its unique capability to communicate with long-distance communication processing cores in a single hop, on-chip wireless channels are utilized to reduce the network latency between the distant processing cores. Thus, due to its CMOS compatibility and architectural adaptability, wireless network-on-chip (NoC) is envisaged as a complement to the traditional NoC, which is attractive as wireless transmission will not require a wiring *** paper evaluates three different deterministic routing algorithms (XY, west-first, and north-last) on a 100-core mesh WiNoC architecture. There are four wireless hubs equally located for each subnet on the mesh WiNoC architecture to examine its global transmission latency, throughput, and energy characteristics. In addition, the cycle-accurate Noxim simulator is employed to carry out the simulation for the WiNoC infrastructure under test using random and transpose traffic workload distribution. Experimental results show that, under a random traffic scenario, the XY routingalgorithm provides the best packet injection rate (PIR) performance at 0.013 flits/cycle/tile. However, the investigated deterministic routing algorithms show no significant performance differences under the transpose traffic, as all of the routing approaches saturated at the same PIR point of 0.007 flit/cycle/tile.
Optical network-on-chip (ONoC) is a promising solution for its high bandwidth and low energy consumption. However, optical circuit switching requires an electrical control network, which leads to network congestion, l...
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Optical network-on-chip (ONoC) is a promising solution for its high bandwidth and low energy consumption. However, optical circuit switching requires an electrical control network, which leads to network congestion, low network utilization, high latency, and an overhead in energy consumption. In this letter, we propose an architecture called RPNoC based on ring topology using packet switching. A wavelength assignment method and a deadlock-free deterministic routing algorithm are jointly designed, which significantly reduce the maximum number of hops using much fewer optical devices compared with other packet-switched ONoCs. The simulation is carried out for 64-node RPNoC under uniform and realistic traffic pattern. The evaluation results show that it yields higher throughput, lower latency, and lower energy consumption than mesh and ring networks.
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