TNT: A modular approach to traversing physically heterogeneous NOCs at bare-wire latency

The ideal latency for on-chip network traversal would be the delay incurred from wire alone. Unfortunately, in a realistic modular network, packet to traverse is significantly higher than this delay. main limiter achieving lower quantization of into hops. Beyond this, physical heterogeneity real-world systems further complicate ability reach wire-only In work, we propose TNT or Transparent Network Traversal. targets by attempting source destination as single multi-cycle ’long-hop’, bypassing effects intermediate routers via transparent data/information flow. built tile-scalable manner novel control path performing neighbor-to-neighbor interactions but enabling end-to-end flit traversal. Further, TNT’s fine grained on-the-fly tracking allows it cope with NOC across chip. Analysis on Ligra graph workloads shows that can reduce much 43% compared state-of-the-art and efficiency gains up 38%. achieve more 3x benefits best/closest alternative research proposal, SMART [44].