Igor Sergeevich Konstantinov, Jurij Gennadievich Chashin, Sergej Aleksandrovich Lazarev, Simulation of the Software-Defined Network for a High-Performance Computing Cluster, Research Journal of Applied Sciences, Volume 9,Issue 10, 2014, Pages 704-706, ISSN 1815-932x, rjasci.2014.704.706, (https://makhillpublications.co/view-article.php?doi=rjasci.2014.704.706) Abstract: The study considers the issues of using the software-defined networks, the current state of the research trends in this area and the most significant projects. The simulation of a high-performance computer network for increase in the performance of the university computing cluster due to the optimization of topology and network traffic between the computational nodes is described. Keywords: A software-defined network;computing cluster;network simulation;increase in the network performance;topology optimization;traffic optimization