Abstract
Large-scale computing systems, once solely the domain of state-of-the-art supercomputers, are now represented by an increasingly heterogeneous class of cluster-oriented computational platforms. In particular, the recent growth in demand for cloud-based services combined with the accelerated growth in performance of commodity microprocessors has fueled the rapid emergence of data centers and computer clusters consisting of upwards of tens of thousands of nodes, resulting in system sizes rivaling and, in some cases, surpassing that of modern supercomputers. As these systems continue to scale in size, the critical performance bottleneck has shifted from the server to the network, mirroring the trend observed in supercomputing systems. Photonic interconnects, capable of ultra-high capacities and low power densities, can enable the continued scaling of these large-scale clusters. However, these systems represent a wide range of computing classes, ranging from highly specialized designs to commodity and cost-driven computing environments. As a result, any optical network interconnecting these systems must be highly agile in order to support the widely varying traffic patterns characteristic of the application classes these systems were built to support.
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Bergman, K., Wang, H. (2013). Optically Interconnected High Performance Data Centers. In: Kachris, C., Bergman, K., Tomkos, I. (eds) Optical Interconnects for Future Data Center Networks. Optical Networks. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-4630-9_9
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