Phase change memory （PCM） is a promising can- didate to replace DRAM as main memory, thanks to its bet- ter scalability and lower static power than DRAM. However, PCM also presents a few drawbacks, such as long writ...Phase change memory （PCM） is a promising can- didate to replace DRAM as main memory, thanks to its bet- ter scalability and lower static power than DRAM. However, PCM also presents a few drawbacks, such as long write la- tency and high write power. Moreover, the write commands parallelism of PCM is restricted by instantaneous power con- straints, which degrades write bandwidth and overall perfor- mance. The write power of PCM is asymmetric： writing a zero consumes more power than writing a one. In this paper, we propose a new scheduling policy, write power asymme- try scheduling （WPAS）, that exploits the asymmetry of write power. WPAS improves write commands parallelism of PCM memory without violating power constraint. The evaluation results show that WPAS can improve performance by up to 35.5%, and 18.5% on average. The effective read latency can be reduced by up to 33.0%, and 17.1% on average.展开更多
A universal expression for the transmitted power to the flexible foundation via the finite continuous isolation system of asymmetry is derived where the concept of effective mobility for the coupled system with con...A universal expression for the transmitted power to the flexible foundation via the finite continuous isolation system of asymmetry is derived where the concept of effective mobility for the coupled system with continuous contact points is put forward. On the basis of the theoretic calculation and analysis, effects of structure parameters of the system on the power flow transmission as well as on the isolation efficiency are fully investigated.展开更多
文摘Phase change memory （PCM） is a promising can- didate to replace DRAM as main memory, thanks to its bet- ter scalability and lower static power than DRAM. However, PCM also presents a few drawbacks, such as long write la- tency and high write power. Moreover, the write commands parallelism of PCM is restricted by instantaneous power con- straints, which degrades write bandwidth and overall perfor- mance. The write power of PCM is asymmetric： writing a zero consumes more power than writing a one. In this paper, we propose a new scheduling policy, write power asymme- try scheduling （WPAS）, that exploits the asymmetry of write power. WPAS improves write commands parallelism of PCM memory without violating power constraint. The evaluation results show that WPAS can improve performance by up to 35.5%, and 18.5% on average. The effective read latency can be reduced by up to 33.0%, and 17.1% on average.
基金This project is supported by National Natural Science Foundation of China (No.59975053)
文摘A universal expression for the transmitted power to the flexible foundation via the finite continuous isolation system of asymmetry is derived where the concept of effective mobility for the coupled system with continuous contact points is put forward. On the basis of the theoretic calculation and analysis, effects of structure parameters of the system on the power flow transmission as well as on the isolation efficiency are fully investigated.
