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- W4248665654 abstract "A machine's performance is the product of its IPC (Instructions Per Cycle) and clock frequency. Recently, S. Palacharla et al. (1997) warned that the dynamic instruction scheduling logic for current machines performs an atomic operation. Either you sacrifice IPC by pipelining this logic, thereby eliminating its ability to execute dependent instructions in consecutive cycles. Or you sacrifice clock frequency by not pipelining it, performing this atomic operation in a single long cycle. Both alternatives are unacceptable for high performance. The paper offers a third, acceptable, alternative: pipelined scheduling with speculative wakeup. This technique pipelines the scheduling logic without eliminating its ability to execute dependent instructions in consecutive cycles. With this technique, you sacrifice little IPC, and no clock frequency. Our results show that on the SPECint95 benchmarks, a machine using this technique has an average IPC that is 13% greater than the IPC of a baseline machine that pipelines the scheduling logic but sacrifices the ability to execute dependent instructions in consecutive cycles, and within 2% of the IPC of a conventional machine that uses single cycle scheduling logic." @default.
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- W4248665654 date "2002-11-11" @default.
- W4248665654 modified "2023-10-18" @default.
- W4248665654 title "On pipelining dynamic instruction scheduling logic" @default.
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- W4248665654 doi "https://doi.org/10.1109/micro.2000.898058" @default.
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