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DAC
2003
ACM

Power-aware issue queue design for speculative instructions

14 years 4 months ago
Power-aware issue queue design for speculative instructions
Speculatively issued instructions may be particularly sensitive to increases in pipeline depth. Our results indicate that as pipeline depth increases, speculation increases the percentage of issue queue instructions that are waiting to be potentially re-issued in case of a mis-speculation. To compensate, issue queues are larger and thus more power hungry. We propose an alternative design called the Dual Issue Queue, that retains pre- and post-issue instructions in separate, smaller queues, saving 18% of issue queue power dissipation without degrading performance. Categories and Subject Descriptors
Tali Moreshet, R. Iris Bahar
Added 13 Nov 2009
Updated 13 Nov 2009
Type Conference
Year 2003
Where DAC
Authors Tali Moreshet, R. Iris Bahar
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