Power-related issues have become important considerations in current generation microprocessor design. One of these issues is that of elevated on-chip temperatures. This has an adverse effect on cooling cost and, if not addressed suitably, on chip reliability. In this paper we investigate the general trade-offs between temporal and spatial hot spot… (More)
A large portion of the power consumption of data centers can be attributed to cooling. In dynamic thermal management mechanisms for data centers and servers, thermal setpoints are typically chosen statically and conservatively, which leaves significant room for improvement in the form of improved energy efficiency. In this paper, we propose two hierarchical… (More)
In this paper we discuss a novel sensing and measurement technology which allows visualizing the 3D temperature and heat distributions in a data center or other complex thermal system. Specifically, we leverage the high spatial resolution of IBM's mobile measurement technology (MMT). We show that substantially improvements in energy efficiency can be… (More)
It is known that light can be slowed down in dispersive materials near resonances. Dramatic reduction of the light group velocity-and even bringing light pulses to a complete halt-has been demonstrated recently in various atomic and solid state systems, where the material absorption is cancelled via quantum optical coherent effects. Exploitation of slow… (More)
The sharp rise in energy usage in data centers, fueled by increased IT workload and high server density, and coupled with a concomitant increase in the cost and volatility of the energy supply, have triggered urgent calls to improve data center energy efficiency. In response, researchers have developed energy-aware IT systems that slow or shut down servers… (More)
Energy consumption has become a critical issue for data centers, triggered by the rise in energy costs, volatility in the supply and demand of energy and the widespread proliferation of power-hungry information technology (IT) equipment. In response, researchers are developing energy-efficient data centers by incorporating energy-aware systems both at the… (More)
Next generation system designs are challenged by multiple "walls": among them, the inter-related impediments offered by power dissipation limits and reliability are particularly difficult ones that all current chip/system design teams are grappling with. In this paper, we first describe the attendant challenges in integrated (multi-dimensional) pre-silicon… (More)
This demonstration presents a power panel level power monitoring and management (PMM) system developed at IBM Research. The ultimate goal of this project is to develop a low-cost, high accuracy, non-intrusive and retrofittable data center power management system.