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It has been the conventional assumption that, due to the superlinear dependence of leakage power consumption on temperature, and widely varying on-chip temperature profiles, accurate leakage estimation requires detailed knowledge of thermal profile. Leakage power depends on integrated circuit (IC) thermal profile and circuit design style. We show that(More)
Energy harvesting has been widely investigated as a promising method of providing power for ultra-low-power applications. Such energy sources include solar energy, radio-frequency (RF) radiation, piezoelectricity, thermal gradients, etc. However, the power supplied by these sources is highly unreliable and dependent upon ambient environment factors. Hence,(More)
In the past, dynamic voltage and frequency scaling (DVFS) has been widely used for power and energy optimization in embedded system design. As thermal issues become increasingly prominent, we propose design-time thermal optimization techniques for embedded systems. By carefully planning DVFS at design time, our techniques proactively optimize system thermal(More)
Processing-in-memory (PIM) is a promising solution to address the "memory wall" challenges for future computer systems. Prior proposed PIM architectures put additional computation logic in or near memory. The emerging metal-oxide resistive random access memory (ReRAM) has showed its potential to be used for main memory. Moreover, with its crossbar array(More)
Nonvolatile processors offer a number of desirable properties including instant on/off, zero standby power and resilience to power failures. This paper presents a fabricated nonvolatile processor based on ferroelectric flip-flops. These flipflops are used in a distributed fashion and are able to maintain system states without any power supply indefinitely.(More)
Recently, general-purpose graphics processing units (GPGPUs) have been widely used to accelerate computing in various applications. To store the contexts of thousands of concurrent threads on a GPU, a large static random-access memory (SRAM)-based register file is employed. Due to high leakage power of SRAM, the register file consumes 20% to 40% of the(More)
Energy harvesting has become a favorable alternative to batteries for wearable embedded systems since it is more environmental and user friendly. However, harvested energy is intrinsically unstable, which could frequently interrupt a processor's execution. To tackle this problem, non-volatile processors have been proposed to checkpoint the whole volatile(More)
Penehyclidine hydrochloride (PHC) is a new anticholinergic drug. PHC has been shown to have a good curative effect for sepsis. Mitogen-activated protein kinase (MAPK) has recently been considered to play an important role in sepsis. In this study, the role of MAPK signal pathways in protective effects of PHC preconditioning on acute lung injury in cecal(More)
Due to its high density, bit alterability, and low standby power, phase change memory (PCM) is considered as a promising DRAM alternative. In embedded systems, especially battery-driven mobile devices, energy is one of the most important performance metrics. Therefore, it becomes an interesting problem of utilizing PCM for energy optimization in embedded(More)
Nonvolatile (NV) processors have attracted much attention in recent years due to their zero standby power, resilience to power failures, and instant-on feature. One design challenge of NV processors is the excess area needed by NV registers. This paper introduces a parallel compare and compress (PaCC) architecture to reduce such excess area. A key component(More)