Performance and energy efficiency are now critical concerns in high performance scientific computing. It is expected that requirements of the scientific problem should guide the orchestration of different techniques of energy saving, in order to improve the balance between energy consumption and application performance. To enable this balance, we propose the development of an autonomous framework to make this orchestration and present the ongoing research to this development, more specifically, focusing in the characterization of the scientific applications and the performance modeling tasks using Machine Learning.
Understanding the computational impact of scientific applications on computational architectures through runtime should guide the use of computational resources in high-performance computing systems. In this work, we propose an analysis of Machine Learning (ML) algorithms to gather knowledge about the performance of these applications through hardware events and derived performance metrics. Nine NAS benchmarks were executed and the hardware events were collected. These experimental results were used to train a Neural Network, a Decision Tree Regressor and a Linear Regression focusing on predicting the runtime of scientific applications according to the performance metrics.
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).
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