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Network coding in multicore processors

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3 Author(s)

In this paper, we present our initial results of improving communication performance in chip multicore processors by applying Network Coding (NC) at intermediate routers. Routers with NC capability enable two flit flows on the same communication links at the same time. Consequently, simulation results show that throughput and delay are improved with the proposed NC architecture. For saturated uni-cast communications in a 6-core network-on-a-chip, throughput can be improved up to 2.3 times with a negligible penalty of average latency at about 2.5 cycles. On the other hand, for saturated multi-cast communications in a 9-core network-on-a-chip, average latency can be reduced from over 1000 cycles to just about 37 cycles and throughput can be increased by 1.4 times.

Published in:

Performance Computing and Communications Conference (IPCCC), 2011 IEEE 30th International

Date of Conference:

17-19 Nov. 2011