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Networks on chip must deliver high bandwidth at low latencies while keeping within a tight power envelope. Using express virtual channels for flow control improves energy-delay throughput by letting packets bypass intermediate routers, but EVCS have key limitations. Nochi (NoC with hybrid interconnect) overcomes these limitations by transporting data payloads and control information on separate planes,...
As companies move towards many-core chips, an efficient on-chip communication fabric to connect these cores assumes critical importance. To address limitations to wire delay scalability and increasing bandwidth demands, state-of-the-art on-chip networks use a modular packet-switched design with routers at every hop which allow sharing of network channels over multiple packet flows. This, however,...
Current on-chip networks use a packet-switched design with a complex router at every hop, which imposes significant communication energy, delay, and throughput overhead. we propose reducing energy and delay, and increasing throughput, using express virtual channels. packets traveling along these virtual express lanes, which connect distant nodes in the network, bypass intermediate routers, significantly...
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