In this letter we present a mechanism to generate subnets for the tasks running on network-on-chip, gaining better performance in broadcast. The present results show that subnetting supplies apparent improvement in the performance of on-chip communications mixed with both unicast and broadcast on manycore processors. However, due to unpredictable task submitting sequence, the applications coming following will be mapped into subnets with different irregular topologies, in which the performance of communications will be restricted by topologies apparently. We propose a flexible subnetting mechanism to build subnet for specified cores on manycore processor to address this problem. Improved hardware support also requires fewer circuits in router design. In this letter, both the unicast and the broadcast traffics are considered. Experiments show that about 10% improvement in performance over the traditional subnetting method is gained on average.

中文翻译：

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NoC中用于高性能广播的无死锁子网划分机制

在这封信中，我们提出了一种机制，用于为在片上网络上运行的任务生成子网，从而在广播中获得更好的性能。目前的结果表明，在许多核心处理器上，子网划分可以显着改善单播和广播混合的片上通信的性能。但是，由于无法预测的任务提交顺序，后续的应用程序将映射到具有不同不规则拓扑的子网中，其中，通信性能显然会受到拓扑的限制。我们提出了一种灵活的子网划分机制，以在多核处理器上为指定核心构建子网，以解决此问题。改进的硬件支持还要求路由器设计中的电路更少。在这封信中，同时考虑了单播流量和广播流量。