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As high performance computing (HPC) systems reach exascale proportions, the cost of simulation in time and resources increases. Tools for selecting representative parts of parallel applications to reduce simulation cost are widespread, e.g., BarrierPoint achieves this by analysing abstract characteristics such as basic blocks and reuse distances. However, architectures new to HPC will have a limited...
Scaling supply voltage to values near the threshold voltage allows a dramatic decrease in the power consumption of processors; however, the lower the voltage, the higher the sensitivity to process variation, and, hence, the lower the reliability. Large SRAM structures, like the last-level cache (LLC), are extremely vulnerable to process variation because they are aggressively sized to satisfy high...
Power density has become the limiting factor in technology scaling as power budget restricts the amount of hardware that can be active at the same time. Reducing supply voltage to ultra-low voltage ranges close to the threshold region has the promise of great energy savings. However, the potential savings of voltage scaling are limited by the correct operation of SRAM cells, which is not guaranteed...
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