Bridging the Frequency Gap in Heterogeneous 3D SoCs through Technology-Specific NoC Router Architectures
Bridging the Frequency Gap in Heterogeneous 3D SoCs through Technology-Specific NoC Router Architectures
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通过特定技术的 NoC 路由器架构弥合异构 3D SoC 中的频率差距
DOI:
10.1145/3394885.3431421
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Thilo Pionteck
中科院分区:
文献类型:
--
作者:
J. M. Joseph;L. Bamberg;J. Geonhwa;Ruei-Ting Chien;Rainer Leupers;Alberto García-Oritz;Tushar Krishna;Thilo Pionteck
In heterogeneous 3D System-on-Chips (SoCs), NoCs with uniform properties suffer one major limitation; the clock frequency of routers varies due to different manufacturing technologies. For example, digital nodes allow for a higher clock frequency of routers than mixed-signal nodes. This large frequency gap is commonly tackled by complex and expensive pseudo-mesochronous or asynchronous router architectures. Here, a more efficient approach is chosen to bridge the frequency gap. We propose to use a heterogeneous network architecture. We show that reducing the number of VCs allows to bridge a frequency gap of up to 2x. We achieve a system-level latency improvement of up to 47% for uniform random traffic and up to 59% for PARSEC benchmarks, a maximum throughput increase of 50%, up to 68% reduced area and 38% reduced power in an exemplary setting combining 15-nm digital and 30-nm mixed-signal nodes and comparing against a homogeneous synchronous network architecture. Versus asynchronous and pseudo-mesochronous router architectures, the proposed optimization consistently performs better in area, in power and the average flit latency improvement can be larger than 51%.
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DOI:
10.1109/hpca47549.2020.00044
发表时间:
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期刊:
2020 IEEE International Symposium on High Performance Computer Architecture (HPCA)
影响因子:
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期刊:
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