Stream Prefetcher based on MediaDSP
Xi Ye · Journal of Zhejiang University(Engineering Science) · 2014
In order to reduce cache miss stall penalties,an optimization method for the first level data cache controller of the media digital signal processor MediaDSP64was proposed,that was prefetching mechanism based on stream table and using the minimum delta stride to prefetch data.Meanwhile,this paper provided a detailed data analysis of how the prefetch distance,the entry of stream table and the length of history table affected the processor performance,and gave the parameter optimization configuration.Simulation results show that the proposed prefetching scheme under optimal parameters can improve H.264,DSP kernel and EEMBC Consumer performance by 6%,32% and 39%,the average memory access time is decreased by 32%,56%and 65%,respectively.