Master's Thesis Defense: "Study of Comparison of OCS and Hybrid Switching on FSO Data Center"
Suraj Yadav
December 1, 2016, 2 p.m.
256C Avery Hall
Committee Members:
Dr. Jitender Deogun (Advisor)
Dr. Ying Lu and Dr. Lisong Xu
With the increase in Big Data applications it has become the need of the hour to handle data efficiently handle the traffic in the data centers. The popular mechanism is parallel processing using commodity hardware. Hence it is becoming an interesting research topic to explore new architectures which have high performance, but with increase in data sizes the architecture has to expand which increases the cabling complexity. Hence the study of Free Space Optical(FSO) communication for the data centers is gaining more importance now than ever.
We have already proposed OWCELL Topology which is a new Free space optical (FSO) architecture. In this thesis we try to find the performance of the OWCELL architecture for optical circuit switching and Hybrid switching for which we develop a flow level simulator which helps reduce the complexity of simulation by considering study of flows instead of packets. In this tool we calculate the parameters of flows accepted, flows rejected, flows for which path cannot be found, total flows and their percentages.
The Hybrid switching performs at par or better most of the times as compared to OCS switching by about 3-5%. We also study the effect on the performance by varying the buffer sizes, Number of servers in the network and the congestion and find that the effect of changing buffers is more on the smaller data center networks than the larger ones while the congestion has adverse effects on smaller networks.