In order to eliminate the energy waste caused by the traditional static hardware multithreaded processor used in real-time embedded system working in the low workload situation, the energy efficiency of the hardware m...In order to eliminate the energy waste caused by the traditional static hardware multithreaded processor used in real-time embedded system working in the low workload situation, the energy efficiency of the hardware multithread is discussed and a novel dynamic multithreaded architecture is proposed. The proposed architecture saves the energy wasted by removing idle threads without manipulation on the original architecture, fulfills a seamless switching mechanism which protects active threads and avoids pipeline stall during power mode switching. The report of an implemented dynamic multithreaded processor with 45 nm process from synthesis tool indicates that the area of dynamic multithreaded architecture is only 2.27% higher than the static one in achieving dynamic power dissipation, and consumes 1.3% more power in the same peak performance.展开更多
The vibration of three-dimensional frame structures was studied as receptance motion. A receptance model was constructed for passive vibration reduction. First, the universal receptance computational method suitable t...The vibration of three-dimensional frame structures was studied as receptance motion. A receptance model was constructed for passive vibration reduction. First, the universal receptance computational method suitable to any combination of boundary conditions was given, and then the way of passive damping-damping elements was analyzed, and an iterative approach to select optimal damping positions, whose dissipated paver is larger than the others, was proposed bared on the results of receptance analysis. The results show that, the receptance model is very suitable for local modification and analysis of structures.展开更多
基金supported partially by the National High Technical Research and Development Program of China (863 Program) under Grants No. 2011AA040101, No. 2008AA01Z134the National Natural Science Foundation of China under Grants No. 61003251, No. 61172049, No. 61173150+2 种基金the Doctoral Fund of Ministry of Education of China under Grant No. 20100006110015Beijing Municipal Natural Science Foundation under Grant No. Z111100054011078the 2012 Ladder Plan Project of Beijing Key Laboratory of Knowledge Engineering for Materials Science under Grant No. Z121101002812005
文摘In order to eliminate the energy waste caused by the traditional static hardware multithreaded processor used in real-time embedded system working in the low workload situation, the energy efficiency of the hardware multithread is discussed and a novel dynamic multithreaded architecture is proposed. The proposed architecture saves the energy wasted by removing idle threads without manipulation on the original architecture, fulfills a seamless switching mechanism which protects active threads and avoids pipeline stall during power mode switching. The report of an implemented dynamic multithreaded processor with 45 nm process from synthesis tool indicates that the area of dynamic multithreaded architecture is only 2.27% higher than the static one in achieving dynamic power dissipation, and consumes 1.3% more power in the same peak performance.
文摘The vibration of three-dimensional frame structures was studied as receptance motion. A receptance model was constructed for passive vibration reduction. First, the universal receptance computational method suitable to any combination of boundary conditions was given, and then the way of passive damping-damping elements was analyzed, and an iterative approach to select optimal damping positions, whose dissipated paver is larger than the others, was proposed bared on the results of receptance analysis. The results show that, the receptance model is very suitable for local modification and analysis of structures.
