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Descripción
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| New applications demand very high processing power when run on embedded systems. Very Long Instruction Word (VLIW) architectures have emerged as a promising alternative to provide such processing capabilities under the given energy budget. However, in this new VLIW-based architectures, the register file is a very critical contributor to the overall power consumption and new approaches have to be proposed to reduce its power while preserving system performance. In this paper, we propose a novel joint hardware–software approach that reduces the leakage energy in the register files of these embedded VLIW architectures. This approach relies upon an energy-aware register assignment method and a hardware support that creates sub-banks in the global register file that can be switched on/off at run time. Our results indicate energy savings in the register file, after considering the overhead of the added extra hardware, up to 50% for modern multimedia embedded applications without performance degradation. We illustrate this approach using real-life applications running on these processors. We also illustrate the tradeoff between the area overhead vs. the gains in the leakage energy for the different strategies. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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INTEGRATION-THE VLSI JOURNAL |
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ISSN
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0167-9260 |
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Factor de impacto JCR
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0,268 |
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Información de impacto
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Volumen
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DOI
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Número de revista
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0 |
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Desde la página
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38 |
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Hasta la página
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48 |
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Mes
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ENERO |
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Ranking
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