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Randomized Partially-Minimal Routing on Three-Dimensional Mesh Networks

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2 Author(s)
Ramanujam, R.S. ; University of California San Diego, La Jolla ; Bill Lin

This letter presents a new oblivious routing algorithm for 3D mesh networks called Randomized Partially- Minimal (RPM) routing that provably achieves optimal worstcase throughput for 3D meshes when the network radix k is even and within a factor of 1/k2 of optimal when k is odd. Although this optimality result has been achieved with the minimal routing algorithm O1TURN [9] for the 2D case, the worst-case throughput of O1TURN degrades tremendously in higher dimensions. Other existing routing algorithms suffer from either poor worst-case throughput (DOR [10], ROMM [8]) or poor latency (VAL [14]). RPM on the other hand achieves near optimal worst-case and good average-case throughput as well as good latency performance.

Published in:

Computer Architecture Letters  (Volume:7 ,  Issue: 2 )