Networking

Supporting Distributed Shared Memory on Multi-Core Network-on-Chips Using a Dual Microcoded Controller

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Executive Summary

Supporting Distributed Shared Memory (DSM) is essential for multi-core Network-on-Chips for the sake of reusing huge amount of legacy code and easy programmability. The authors propose a microcoded controller as a hardware module in each node to connect the core, the local memory and the network. The controller is programmable where the DSM functions such as virtual-to-physical address translation, memory access and synchronization etc. are realized using microcode. To enable concurrent processing of memory requests from the local and remote cores, the controller features two mini-processors, one dealing with requests from the local core and the other from remote cores.

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