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

J. M. Joseph, C. Blochwitz, T. Pionteck

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.
Original languageEnglish
Title of host publication2016 International Conference on High Performance Computing Simulation (HPCS)
Number of pages8
PublisherIEEE
Publication date01.07.2016
Pages140-147
Article number7568328
ISBN (Print)978-1-5090-2089-8
ISBN (Electronic)978-1-5090-2088-1
DOIs
Publication statusPublished - 01.07.2016
Event14th International Conference on High Performance Computing and Simulation - Innsbruck, Austria
Duration: 18.06.201622.06.2016
Conference number: 123776

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