Increasing network bandwidth on meshes
Jerry Stamatopoulos, Jon A. Solworth · 1994
In bandwidth limited computers, such as meshes and tori, it is important to achieve high bandwidth across the bisection. Traditional techniques achieve bandwidth in the range of 30–70%. We show how to use barriers, in particular Integrated Network Barriers to achieve high bandwidth utilization which is arbitrarily close to 100%. This technique also provides low latency and fairness to processors. Moreover, it works globally and therefore is not dependent on local approximations of network traffic.