Compiler Techniques for Flat Neighborhood Networks

A Flat Neighborhood Network (FNN) is a new interconnection network architecture that can provide very low latency and high bisection bandwidth at a minimal cost for large clusters. However, unlike more traditional designs, FNNs generally are not symmetric. Thus, although an FNN by definition offers a certain base level of performance for random communication patterns, both the network design and communication (routing) schedules can be optimized to make specific communication patterns achieve significantly more than the basic performance.