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ABSTRACT
The scalability of the flat-mesh network-on-chip (NoC) architecture is limited due to the increase in the network diameter. In this work, a locality-aware bi-level mesh-mesh network architecture is proposed to balance the number of packets injected between the top and bottom level networks, without placing any constraints on the destination nodes. The results of the network analysis for a 1024 core CMP demonstrate an increase of upto ≈ 34% in the throughput compared to a flat-mesh, while consuming upto ≈ 10% less energy per flit. In comparison to a hierarchical CMesh NoC topology, the proposed network provides upto 2.5 X improvement in the throughput while consuming approximately the same amount of energy per flit. Similar results of higher throughput and low energy compared to the flat-mesh and CMesh NoC topologies are observed down to smaller 100-core CMPs.
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