By Chrysostomos Nicopoulos
The carrying on with relief of characteristic sizes into the nanoscale regime has ended in dramatic raises in transistor densities. Integration at those degrees has highlighted the criticality of the on-chip interconnects. Network-on-Chip (NoC) architectures are seen as a potential approach to burgeoning worldwide wiring delays in many-core chips, and feature lately crystallized right into a major study area. On-chip networks instill a brand new taste to communique learn because of their inherently resource-constrained nature. regardless of the light-weight personality demanded of the NoC parts, smooth designs require ultra-low conversation latencies with the intention to focus on inflating information bandwidths. The paintings offered in Network-on-Chip Architectures addresses those matters via a complete exploration of the layout house. The layout points of the NoC are seen via a penta-faceted prism encompassing 5 significant concerns: (1) functionality, (2) silicon zone intake, (3) power/energy potency, (4) reliability, and (5) variability. those 5 features function the basic layout drivers and demanding evaluate metrics within the quest for effective NoC implementations. The learn exploration employs a two-pronged procedure: (a) MICRO-architectural ideas in the significant NoC elements, and (b) MACRO-architectural offerings aiming to seamlessly merge the interconnection spine with the remainder process modules. those learn threads and the aforementioned 5 key metrics mount a holistic and in-depth assault on so much matters surrounding the layout of NoCs in multi-core architectures.
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Extra info for Network-on-Chip Architectures: A Holistic Design Exploration
More importantly, though, ViChaR saturates at higher injection rates than the generic case. , before the onset of saturation). Higher buffer occupancy indicates network blocking. ViChaR is clearly much more efficient at moving flits through the router; the buffer occupancy of a 16-flit/port ViChaR design is considerably lower than an equal-size static configuration. Buffer occupancy alone, however, is not an indicative metric, since it does not relay any information about network latency. To validate ViChaR’s highly efficient buffer management scheme, its latency at these smaller buffer sizes should also be investigated.
8, respectively). All the components of the ViChaR router remain within the slack provided by the slower arbiters. Hence, the ViChaR architecture does not affect the pipeline depth or the clock frequency. Furthermore, since ViChaR does not create any interdependencies between pipeline stages, it can also be used in speculative router architectures which minimize the pipeline length. 1 Simulation Platform A cycle-accurate on-chip network simulator was used to conduct detailed evaluation of the architectures under discussion.
Thus, the ViChaR model provides area savings of around 4%. 75%). 4. 2 ViChaR Component Analysis The key challenges in designing ViChaR were to avoid (a) deepening the router’s pipeline, and (b) decreasing the operating frequency. To circumvent the multi-cycle delay induced by a linked-list approach  to ViChaR, we opted instead for a table-based approach, as illustrated in Fig. 10. This logic is required for each output port in the router. 10) forms the core of the control logic of ViChaR. , West).