Guilherme Carvalho Januario

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Considering the increasing importance of carbon free networking solutions, several energy-efficient networking systems have been proposed and evaluated in literature. One significant challenge is how to encompass actions targeting energy savings and possible corresponding degradations in network QoS (Quality of Service). This paper presents an(More)
Energy efficiency features are being integrated in network protocols and management systems. Simulations can provide in put on how a particular algorithm would perform in different network conditions. However, building an environment that is able to comprehensively account for interactions between different network functions is difficult. A combination of(More)
We present an energy-efficient implementation of RGB-D simultaneous localization and mapping (SLAM) by applying approximate computing (AC) techniques such as loop perforation (LP) and reduced precision (RP). To reduce processing time and power consumption, LP and RP were applied to the two most computationally challenging portion of the multi-kernel(More)
A technique to speed up stencil computation is introduced. Computation and data reuse schemes are developed for its application to 1- and 3-dimensional stencils. The approach traverses the data domain fewer times than a state-of-the-art, straightforward iterative stencil implementation would. Performance results are shown for a variety of platforms,(More)
A significant number of green, energy-saving network protocols have been invented in recent years in response to demand for reducing the amount of energy consumed by network infrastructure. In this paper, we report on the difficulties we encountered when building an SDN environment that could emulate energy saving protocols operating at different layers of(More)
Various energy efficiency network capabilities have been proposed in recent years in response to the demand of reducing the amount of energy consumed by the network infrastructure. In this regard, we demonstrate SOS, a method able to orchestrate different energy efficiency capabilities considering the possible combinations and conflicts among them, as well(More)
Energy efficiency features are being integrated in network protocols and management systems in order to make the infrastructure more sustainable and, at the same time, address the growing users' demand. Many of such features affect the network in different ways, thus yielding trade-offs. They can affect the reliability and availability of the network when(More)