- https://doi.org/10.3724/sp.j.1016.2008.00309
Using Instruction Fetch Policy to Control Performance of a Thread in SMT Processors
- Sep 28, 2009
- Chinese Journal of Computers
- Cai-Xia Sun +1 more
Currently,fetch policies in Simultaneous Multithreading(SMT)processors almost focus on overall performance optimization,and provide no control over how individual threads are executed.A novel fetch policy called CPIT(Controlling Performance of Individual Thread)is proposed to control the execution of a particular thread in SMT processors.Results show that for more than 94% of all cases measured,CPIT can control the execution and consequently achieve the desired performance for a given thread.For the failing cases,the average variance is within 1.25%.Furthermore,CPIT does not sacrifice overall performance of SMT processors severely.Compared to fetch policies orienting towards performance maximization such as ICOUNT,the average degradation of overall performance is not more than 3% and the degradation of threads other than the given thread in performance is only 1.75%.
- # Simultaneous Multithreading Processors
- # Simultaneous Multithreading
- # Fetch Policies
- # Individual Thread
- # Average Variance
- # Performance Optimization
- # Performance Of Processors
- # Multithreading Processors
- # Degradation Of Performance
- # Instruction Fetch Policy
