Processors

A Workload-Adaptive and Reconfigurable Bus Architecture for Multicore Processors

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Executive Summary

Interconnection networks for multicore processors are traditionally designed to serve a diversity of workloads. However, different workloads or even different execution phases of the same workload may benefit from different interconnect configurations. In this paper, the authors first motivate the need for workload-adaptive interconnection networks. Subsequently, they describe an interconnection network framework based on reconfigurable switches for use in medium-scale (up to 32 cores) shared memory multicore processors. Their cost-effective reconfigurable interconnection network is implemented on a traditional shared bus interconnect with snoopy-based coherence, and it enables improved multicore performance.

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