Anchored opportunity queueing: a low-latency scheduler for fair arbitration among virtual channels
Journal of Parallel and Distributed Computing
Flow-aware allocation for on-chip networks
NOCS '09 Proceedings of the 2009 3rd ACM/IEEE International Symposium on Networks-on-Chip
Static timing analysis for modeling QoS in networks-on-chip
Journal of Parallel and Distributed Computing
Dynamic-priority arbiter and multiplexer soft macros for on-chip networks switches
DATE '12 Proceedings of the Conference on Design, Automation and Test in Europe
| Hi-index | 0.00 |
Switch design for interconnection networks plays an important role in the overall performance of multiprocessors and computer networks. In this paper we study the impact of one parameter in the switch design space, link arbitration. We demonstrate that link arbitration can be a determining factor in the performance of current networks. Moreover, we expect increased research focus on arbitration techniques to become a trend in the future, as switch architectures evolve towards increasing the number of virtual channels and input ports.In the context of a state-of-the-art switch design we use both synthetic workload and execution driven simulations to compare several arbitration policies. Furthermore, we devise a new arbitration method, Look-Ahead arbitration. Under heavy traffic conditions the Look-Ahead policy provides important improvements over traditional arbitration schemes without a significant increase in hardware complexity. Also, we propose a priority based policy that is capable of reducing the execution time of parallel applications. Lastly, we enhance the arbitration policies by a supplemental mechanism, virtual channel reservation, intended to alleviate the hot-spot problem.