Selective Writeback: Exploiting Transient Values for Energy-Efficiency and Performance

Abstract

Today's superscalar microprocessors use large, heavily-ported physical register files (RFs) to increase the instruction throughput. The high complexity and power dissipation of such RFs mainly stem from the need to maintain each and every result for a large number of cycles after the result generation. We observed that a significant fraction (about 45%) of… (More)
DOI: 10.1145/1165573.1165584

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