The Research of Memory Performance in Multiprocessor System
Siwei Zhang · Computer Knowledge and Technology · 2012
According to the analysis of memory hierarchy structure,there are new problems when single processor system be come Multiprocessor system,one of which is synchronization-base Cache coherence problem.Therefore,when Multithreaded programs do read and write operation with the shared memory,the missing of cache and the inconsistency of data in multiproces sor system will affect the memory performance.Base on this problem,This paper designs a memory performance test method named multithread memory latency of read and write.According to the experimental results,the paper point out it will improve the performance of share memory that the threads which access the same shared memory bind to the same processor.According to this result,several suggestions are proposed for how to improve the performance of the parallel programs.