【摘要】 多核处理器已经成为主流,并且被广泛应用于嵌入式设备中.在操作系统如何有效支持多核处理器方面的研究中,目前国内外大多基于常见的紧耦合共享存储架构的多核处理器,而对一些特殊存储架构的多核处理器研究并不多.本文针对内存受限的多级存储架构的多核处理器,提出一种单代码多数据的嵌入式多核操作系统模型.实验表明,该模型应用在具有多级存储架构的八核DSP上,比AMP模型减少约80%的代码空间开销;与SMP模型相比,与实时性紧密相关的时间开销减少约10倍.更多还原

【Abstract】 Multicore processors have already became mainstream and are being widely applied in embedded devices. Current research on how operating systems support multicore processors has focus on tightly coupled and shared memory architecture, which is the most common architecture for multicore processors, but ignores other special memory architectures. In this paper, a new embedded multicore operating system model based on a single code and multiple data is proposed for memory-constrained and multi-level memory architectures. Experiments show that, when applied to an eight-core DSP based on a multi-level memory architecture, this model can efficiently reduce the code space overhead by 80% compared to AMP; and the time cost related to real-time is ten times lower than that on SMP.更多还原