Thanks to the emerging 3D integration technology, The multiprocessor system on chips （MPSoCs） can now integrate more IP cores on chip with improved energy efficiency. However, several severe challenges also rise up ...Thanks to the emerging 3D integration technology, The multiprocessor system on chips （MPSoCs） can now integrate more IP cores on chip with improved energy efficiency. However, several severe challenges also rise up for 3D ICs due to the die-stacking architecture. Among them, power supply noise becomes a big concern. In the paper, we investigate power supply noise （PSN） interactions among different cores and tiers and show that PSN variations largely depend on task assignments. On the other hand, high integration density incurs a severe thermal issue on 3D ICs. In the paper, we propose a novel task scheduling framework considering both the PSN and the thermal issue. It mainly consists of three parts. First, we extract current stimuli of running tasks by analyzing their power traces derived from architecture level simulations. Second, we develop an efficient power delivery network （PDN） solver to evaluate PSN magnitudes efficiently. Third, we propose a heuristic algorithm to solve the formulated task scheduling problem. Compared with the state-of-the-art task assignment algorithm, the proposed method can reduce PSN by 12% on a 2 × 2 × 2 3D MPSoCs and by 14% on a 3 × 3 × 3 3D MPSoCs. The end-to-end task execution time also improves as much as 5.5% and 7.8% respectively due to the suppressed PSN.展开更多
针对越来越多保供电需求的服务,电力服务商应根据不同的用户在不同的场合提出具体的适用的保供电电源。具体保供电电源应用设计应考虑方便快捷,安装简易等因素,采用车载的方式保证移动性需求。根据后备时间为15 min的要求设计车载式UPS(...针对越来越多保供电需求的服务,电力服务商应根据不同的用户在不同的场合提出具体的适用的保供电电源。具体保供电电源应用设计应考虑方便快捷,安装简易等因素,采用车载的方式保证移动性需求。根据后备时间为15 min的要求设计车载式UPS(Uninterrupted Power Supply)的蓄电池部分。在车厢长度和车辆承重的限制下,并考虑震动影响,着重就几种典型蓄电池,包括铅酸蓄电池和锂离子蓄电池的典型代表展开讨论,详细介绍这两类蓄电池的选型及计算。展开更多
基金This work was supported by the National Natural Science Foundation of China under Grant Nos. 61401008 and 61602022, and the State Key Laboratory of Computer Architecture, Institute of Computing Technology, Chinese Academy of Sciences, under Grant No. CARCH201602.
文摘Thanks to the emerging 3D integration technology, The multiprocessor system on chips （MPSoCs） can now integrate more IP cores on chip with improved energy efficiency. However, several severe challenges also rise up for 3D ICs due to the die-stacking architecture. Among them, power supply noise becomes a big concern. In the paper, we investigate power supply noise （PSN） interactions among different cores and tiers and show that PSN variations largely depend on task assignments. On the other hand, high integration density incurs a severe thermal issue on 3D ICs. In the paper, we propose a novel task scheduling framework considering both the PSN and the thermal issue. It mainly consists of three parts. First, we extract current stimuli of running tasks by analyzing their power traces derived from architecture level simulations. Second, we develop an efficient power delivery network （PDN） solver to evaluate PSN magnitudes efficiently. Third, we propose a heuristic algorithm to solve the formulated task scheduling problem. Compared with the state-of-the-art task assignment algorithm, the proposed method can reduce PSN by 12% on a 2 × 2 × 2 3D MPSoCs and by 14% on a 3 × 3 × 3 3D MPSoCs. The end-to-end task execution time also improves as much as 5.5% and 7.8% respectively due to the suppressed PSN.
文摘针对越来越多保供电需求的服务,电力服务商应根据不同的用户在不同的场合提出具体的适用的保供电电源。具体保供电电源应用设计应考虑方便快捷,安装简易等因素,采用车载的方式保证移动性需求。根据后备时间为15 min的要求设计车载式UPS(Uninterrupted Power Supply)的蓄电池部分。在车厢长度和车辆承重的限制下,并考虑震动影响,着重就几种典型蓄电池,包括铅酸蓄电池和锂离子蓄电池的典型代表展开讨论,详细介绍这两类蓄电池的选型及计算。
