Identificação Automática de Dark Silicon em Processadores Multicore

Rafael AlvesRicardo Santos

Abstract

Atualmente, os projetos de processadores modernos têm reduzido a área do chip que pode ser utilizada em frequência máxima de clock a fim de continuarem a evolução de desempenho conforme a lei de Moore. A porção de área que deve ser mantida em baixa frequência é denominada Dark Silicon. Como é uma situação dependente do processo tecnológico utilizado, é essencial que os projetos de processadores modernos considerem a identificação dessa porção de área a fim de explorarem alternativas para mitigá-la. Este trabalho propõe identificar e estimar o quantidade de Dark Silicon a partir da ferramenta MultiExplorer. Para avaliar essas estimativas, experimentos foram realizados em projetos de processadores multicore reais fabricados com diferentes processos tecnológicos (90nm-22nm).

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