Overview of inter-communication mechanism on multi-core processor

As the increasing in chip density, on-chip communication will be a key factor in determining the performance and power consumption of the multi-core processor. Some typical communication mechanisms of the multi-core processor at present are introduced in detail in this paper, such as cache-shared bus structure, shared-bus structure and NoC-based structure, and there advantages, disadvantages and ranges of application are also analyzed. Finally, the basic architecture and research of the NoC are presented in particularly, and its advantages are also analyzed, such as scalability, reusability and predictability. NoC is inevitable choice to meet the high level of integration chips.