Per-task energy accounting in computing systems

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Title:	Per-task energy accounting in computing systems
Author:	Liu, Qixiao; Jiménez, Víctor; Moreto Planas, Miquel; Abella, Jaume; Cazorla, Francisco; Valero Cortés, Mateo
Other authors:	Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. CAP - Grup de Computació d'Altes Prestacions
Abstract:	We present for the first time the concept of per-task energy accounting (PTEA) and relate it to per-task energy metering (PTEM). We show the benefits of supporting both in future computing systems. Using the shared last-level cache (LLC) as an example: (1) We illustrate the complexities in providing PTEM and PTEA; (2) we present an idealized PTEM model and an accurate and low-cost implementation of it; and (3) we introduce a hardware mechanism to provide accurate PTEA in the cache.
Subject(s):	-Àrees temàtiques de la UPC::Informàtica::Arquitectura de computadors -Data processing service centers -- Energy consumption -Per-task energy accounting -PTEA -Per-task energy metering -PTEM -Centres informàtics -- Consum d'energia
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Document type:	Article - Published version Report
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