GPUs has been widely used in scientific computing, as by offering exceptional performance as by power-efficient hardware. Its position established in high-performance and scientific computing communities has increased the urgency of understanding the power cost of GPU usage in accurate measurements. For this, the use of internal sensors are extremely important. In this work, we employ the GPU sensors to obtain high-resolution power profiles of real and benchmark applications. We wrote our own tools to query the sensors of two NVIDIA GPUs from different generations and compare the accuracy of them. Also, we compare the power profile of GPU with CPU using IPMItool.
Atualmente a Inteligencia Artificial (IA) é uma das forças mais transformadoras do nosso tempo, com resultados surpreendentes. Esses resultados se devem, em grande parte, ao uso de alta capacidade computacional oferecida pelos ambientes de HPC, os quais ao mesmo tempo requerem muita energia para seu funcionamento. Além disso, o consumo de energia é responsável pela emissão de gases de efeito estufa, entre os quais o CO2 é o mais expressivo. Neste trabalho é avaliado o impacto do treinamento de diferentes algoritmos de IA no consumo energético e na emissão de CO2 equivalente entre diferentes arquiteturas computacionais (ARM, GPU e X86).
The pandemic of the new COVID-19 has raised many questions to a very connected society as to how to best respond to such a challenge at this current time. The best response so far is to call people for following the instructions from the World Health Organisation (WHO) as a way of reducing the spread of the virus and thus relieving the health system, striving to avoid a collapse. This work studies the spread of positive opinion on adhering to social distancing based on network topology and metrics using a network-oriented model for social contagion. It is shown that interventions based on social network measurements can be used to boost the spread of positive opinion about adhering to these measures. It is also shown that our model accounts for the relevance the health authorities have on encouraging people to partake in social distancing voluntarily.
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