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Networks-on-chip (NoCs) have become a leading energy consumer in modern multi-core processors, with a considerable portion of this energy originating from the large number of virtual channel (FIFO) buffers. While emerging memories have been considered for many architectural components such as caches, the asymmetric access properties and relatively small size of network-FIFOs compared to the required...
Modern computational workloads require abundant thread level parallelism (TLP), necessitating highly-parallel, many-core accelerators such as General Purpose Graphics Processing Units (GPGPUs). GPGPUs place a heavy demand on the on-chip interconnect between the many cores and a few memory controllers (MCs). Thus, traffic is highly asymmetric, impacting on-chip resource utilization and system performance...
The diminishing momentum of Dennard scaling leads to the ever increasing power density of integrated circuits, and a decreasing portion of transistors on a chip that can be switched on simultaneously—a problem recently discovered and known as dark silicon. There has been innovative work to address the “dark silicon” problem in the fields of power-efficient core and cache system. However, dark silicon...
Designers of the on-chip interconnect for manycore chips are faced with the dilemma of meeting performance, power and reliability requirements for different operational scenarios. In this paper, we propose a multimode on-chip interconnect called SuperNet. This interconnect can be configured to run in three different modes: energy efficient mode; performance mode; and, reliability mode. Our proposed...
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