원문정보
초록
영어
Both performance and capacity of the main memory are the key to the computer systems in current architecture. DRAM, which is the most used main memory, can’t extend in capacity for its high energy consumption and repeatedly refresh. Fortunately, some new memory mediums, such as phase-change memory (PRAM), are used to replace traditional DRAM memory. These new memories have many advantages, like low energy consumption, without repeatedly refresh, high density storage, and so on. Therefore, these memories are promising. However, their low read/write performance and limited life are restricted the replacement process. In current time, hybrid memory, which consists of both PRAM and DRAM, is a good choice. In this way, the memory capacity can be extended. So, the most challenge for the hybrid memory is the performance. In this paper, we propose a dynamic hybrid LRU caching scheme (DH-LRU) for the last level cache in PRAM/DRAM hybrid main memory to improve the main memory performance. Compared with traditional cache policies, like LRU, FIFO, RANDOM, CFLRU, our DH-LRU improves performance by 4.6%. Moreover, energy consumption of write and read operation can be reduced up to 88.2%.
목차
1. Introduction
2. Motivation
2.1. Traditional Caching Schemes in PDRAM
3. Related Works
3.1. LRU Caching Scheme
3.2. Clean-First LRU Caching Scheme
3.3. Caching Schemes Based On Frequency Values
3.4. Shortcomings and Usage
4. Dynamic Hybrid LRU Caching scheme
4.1. Principles of Design
4.2. Implementation
5. Experiment Settings
5.1. System Configuration
5.2. Configurations
5.3. Experiment
6. Results & Analyses
6.1. Performance Improvement
6.2. The Effects of Different Proportion and Position P
6.3. The Effects of Different Threshold
6.4. Utilization of PRAM
6.5. Overhead of DH-LRU
6.6. Energy Consumption of DH-
7. Conclusion
References