MPI aware routing using SDN

Among the factors that determine the performance of a computationally intensive application running on a highperformance computing (HPC) system, communication between processes is vital. Our fundamental idea behind optimizing Message Passing Interface (MPI) communications is to maximize the utilization of the network of the cluster system, by deploying the Software Defined Networking (SDN) paradigm. We identify two primary issues: overuse of shortest paths leaving them choked and dynamically unoptimized path selection. SDN will be used to leverage dynamic routing to avoid these two issues. In this paper, we present an application-aware network routing mechanism specifically for enhancing MPI applications with the help of an adaptive routing algorithm.