A hybrid multicast deadlock-free scheme for virtualization at the NoC level

IEICE Electronics Express

Hengzhu Liu¹  Botao Zhang¹  Wenmin Hu¹ 

[1] Computer School, National University of Defense Technology

关键词: multicast;    centralized allocator;    Network-on-Chip;    virtualization;   

DOI  :  10.1587/elex.8.1743

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(11)A new hybrid multicast deadlock-free scheme is proposed to enhance the multicast capability. In the proposed scheme, the small-sized multicast packet is routed in a deadlock-free way by packet-buffered and asynchronous replication, and the large-sized multicast packet is transferred under the control of centralized allocator, which restricts the number of concurrent multicast with large-sized packet transmission. The virtualization at the Network-on-Chip (NoC) level is also taken into consideration, that the allocator reserves respective counters for each sub-network. According to result of the experiment under the real workload traces, the performance reduction caused by centralized allocator is negligible. The router and the allocator are synthesized in Chartered 90nm CMOS technology. Compared with the only packet-buffered scheme, the allocator only consumes extra 0.079% to 0.2972% area overhead according to the different setting (routing mechanism, network size, number of supported sub-network) while offering the ability of large-sized multicast packet transmission.

【 授权许可】

Unknown