Dynamic reconfiguration of optically interconnected networks with time-division multiplexing
Journal of Parallel and Distributed Computing
Dynamic Reconfiguration of an Optical Interconnect
ANSS '03 Proceedings of the 36th annual symposium on Simulation
Dynamic Voltage Scaling with Links for Power Optimization of Interconnection Networks
HPCA '03 Proceedings of the 9th International Symposium on High-Performance Computer Architecture
The SPEED cache coherence protocol for an optical multi-access interconnect architecture
MPPOI '95 Proceedings of the Second Workshop on Massively Parallel Processing Using Optical Interconnections
Energy optimization techniques in cluster interconnects
Proceedings of the 2003 international symposium on Low power electronics and design
Principles and Practices of Interconnection Networks
Principles and Practices of Interconnection Networks
Exploring the Design Space of Power-Aware Opto-Electronic Networked Systems
HPCA '05 Proceedings of the 11th International Symposium on High-Performance Computer Architecture
Leveraging Optical Technology in Future Bus-based Chip Multiprocessors
Proceedings of the 39th Annual IEEE/ACM International Symposium on Microarchitecture
Light speed arbitration and flow control for nanophotonic interconnects
Proceedings of the 42nd Annual IEEE/ACM International Symposium on Microarchitecture
Energy based performance tuning for large scale high performance computing systems
Proceedings of the 2012 Symposium on High Performance Computing
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As communication distances and bit rates increase, optoelectronic interconnects are being deployed for designing high-bandwidth low-latency interconnection networks for high performance computing (HPC) systems. While bandwidth scaling with efficient multiplexing techniques (wavelengths, time and space) are available, static assignment of wavelengths can be detrimental to network performance for non-uniform (adversial) workloads. Dynamic bandwidth re-allocation based on actual traffic pattern can lead to improved network performance by utilizing idle resources. While dynamic bandwidth re-allocation (DBR) techniques can alleviate interconnection bottlenecks, power consumption also increases considerably. In this paper, we propose to improve the performance of optical interconnects using DBR techniques and simultaneously optimize the power consumption using Dynamic Power Management (DPM) techniques. DBR, re-allocates idle channels to busy channels (wavelengths) for improving throughput and DPM regulates the bit rates and supply voltages for the individual channels. A reconfigurable opto-electronic architecture and a performance adaptive algorithm for implementing DBR and DPM are proposed in this paper. Our proposed reconfiguration algorithm achieves a significant reduction in power consumption and considerable improvement in throughput with a marginal increase in latency for various traffic patterns.