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Adaptive allocation of default router paths in Network-on-Chips for latency reduction

Authors:: Joseph, J. M. , Blochwitz, C. , Pionteck, T.
Book Title:: International Conference on High Performance Computing Simulation (HPCS)
Pages:: p.p. 140-147
Date:: 2016
DOI:: 10.1109/HPCSim.2016.7568328
Language:: English
Abstract:: We present a novel prioritization technique to reduce latencies in Network-on-chips. For individual routers, we adaptively allocate default paths assuming that subsequent packages are part of a data stream and, thus, routing decisions are identical. Since proactive routing to an output port is performed, the conventional router pipeline is partly bypassed. The method is deterministic, non-speculative with local and autonomous decisions, retains the standard network load, and does not penalize non-prioritized links. Virtual point-to-point connections emerge, which span multiple hops and accelerate interleaved streams. We achieve an average package latency reduction of 4.8% to 12.2% in simulations for PARSEC benchmarks.
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