| 1. |
- Hu, Wenmin, et al.
(författare)
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A flexible configuration approach for fault-tolerant multicast/unicast
- 2011
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Ingår i: IEEE Int. Conf. Commun. Softw. Networks, ICCSN. - 9781612844855 ; , s. 393-396
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Konferensbidrag (refereegranskat)abstract
- A flexible approach for lookup table configuration is proposed. In this scheme, a predetermined path is setup in parallel by several unicastsetup packets. Compared with other approaches, our scheme eliminates the overhead of configuration bus by adding little logic to existing multicast router based on lookup table. This extension makes any-shaped path setup possible, which benefits fault-tolerance on Network-on-Chip (NoC).
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| 2. |
- Hu, Wenmin, et al.
(författare)
-
Multicast Path Setup Incorporating Evicting
- 2012
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Ingår i: Elektronika ir Elektrotechnika. - : Kaunas University of Technology (KTU). - 1392-1215. ; :8, s. 101-104
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Tidskriftsartikel (refereegranskat)abstract
- In this paper, we propose a novel multicast path setup scheme, which incorporates the evicting process. Compared with the previous work, our scheme either overcomes the limitation in evicting times or reduces the setup latency.
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| 3. |
- Hu, Wenmin, et al.
(författare)
-
Network-on-Chip Multicasting with Low Latency Path Setup
- 2011
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Ingår i: Proceedings of the VLSI-SoC Conference.
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Konferensbidrag (refereegranskat)abstract
- A low-latency path setup approach with multiple setup packets for parallel set is presented. It reduces the header overhead compared to multiaddress encoding. Further, we propose four variants of deadlock-free multicast routing algorithms using different subpath generation methods, different destination partitioning, and channel sharing strategies. Experimental results show that the quatuor partitions path-like tree outperforms other algorithms.
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| 4. |
- Hu, Wenmin, et al.
(författare)
-
Power-efficient Tree-based Multicast Support for Networks-on-Chip
- 2011
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Ingår i: Proceedings of the Asian Pacific Design Automation Conference (ASPDAC). - : IEEE. - 9781424475162 ; , s. 363-368
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Konferensbidrag (refereegranskat)abstract
- In this paper, a novel hardware support for multicast on mesh Networks-on-Chip (NoC) is proposed. It supports multicast routing on any shape of tree-based paths. Two power-efficient tree-based multicast routing algorithms, Optimized tree (OPT) and Left-XY-Right-Optimized tree (LXYROPT) are also proposed. XY tree-based (XYT) algorithm and multiple unicast copies (MUC) are also implemented on the router as baselines. Along with the increase of the destination size, compared with MUC, OPT and LXYROPT achieve a remarkable improvement in both latency and throughput while the average power consumption is reduced by 50% and 45%, respectively. Compared with XYT, OPT is 10% higher in latency but gains 17% saving in power consumption. LXYROPT is 3% lower in latency and 8% lower in power consumption. In some cases, OPT and LXYROPT give power saving up to 70% less than the XYT.
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| 5. |
- Hu, Wenmin, et al.
(författare)
-
Self-selection pseudo-circuit : a clever crossbar pre- allocation
- 2012
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Ingår i: IEICE Electronics Express. - : Institute of Electronics, Information and Communications Engineers (IEICE). - 1349-2543. ; 9:6, s. 558-564
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Tidskriftsartikel (refereegranskat)abstract
- This paper proposes self-selection pseudo- circuit (SP), a simple and effective approach to increase switch connection reusing rate and improve the network performance. It especially suits the network in which the performance is dominated by the number of hops. In SP scheme, multiple switch connections are allowed to be reserved for one inport, and the flit can reuse the partial switch connection(s) based on the routing information. For the evaluation with the traces from Splash-2, SP reduces the interconnection latency by up to 21.6% (16.9% average) with 16-core CMP configuration, and 22.2% ( 19.5 on average) with 64- core CMP configuration. Evaluated with synthetic traffic, the proposed scheme decreases the latency up to 19% ( 16% average).
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| 6. |
- Hu, Wenmin, et al.
(författare)
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TPSS : A flexible hardware support for unicast and multicast on networks-on-chip
- 2012
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Ingår i: Journal of Computers. - : International Academy Publishing (IAP). - 1796-203X. ; 7:7, s. 1743-1752
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Tidskriftsartikel (refereegranskat)abstract
- Multicast is an important traffic mode that runs on multi-core systems, and an efficient hardware support for multicast can greatly improve the performance of the whole system. Most multicast solutions use the dimension-order routing to generate the mutlicast trees, which are neither bandwidth nor power efficient. This article presents a synthesizable router for network-on-chip (NoC) which supports arbitrarily shaped multicast path based on a mesh topology. In our scheme, incremental setup is adopted to simplify the process of multicast tree construction. For each sub-path setup, we present a novel scheme called two period sub-path setup (TPSS). TPSS is divided into two periods: routing to a predeterminate intermediate router, and updating lookup tables from the intermediate router to destination. This novel setup makes it feasible to support arbitrarily shaped path setup. In our case study, Optimized tree algorithm (OPT) and Left-XY-Right-Optimized tree algorithm (LXYROPT) are proposed for power-efficient path searching, but they need to be pre-configured for the reason of high computation cost. Moreover, Virtual Circuit Tree Multicasting (VCTM) is also supported in our scheme for dynamic construction of multicast path, which needs no computation in path searching. The performance is evaluated by using a cycle accurate simulator developed in SystemC, and the hardware overhead is estimated by using a synthesizable HDL model. Compared to VCTM (without FIFO, multicast table and network adapter), the area overhead of implementing our router is negligible (less than 0.5%).
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