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- W1746797279 abstract "Even sophisticated branch-prediction techniques necessarily suffer some mispredictions, and even relatively small mispredict rates hurt performance substantially in current-generation processors. This suggests the study ofmultipath execution ,i n which the processor simultaneously executes code from both the taken and not-taken outcomes of a branch. This paper describes HydraScalar, a simulator built on the SimpleScalar toolkit (version 2.0) to accurately model a wideissue, out-of-order execution multipath processor. The paper describes the simulator’s mechanisms for instruction fetch, branch handling, branch-confidence prediction, and multiple-path management. Because multipath execution is so sensitive to branch prediction, HydraScalar significantly expands SimpleScalar’s modeling of branch and instruction-fetch effects, therefore adding a number of features that are beneficial regardless of whether multipath or conventional superscalar, out-of-order execution is being modeled." @default.
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- W1746797279 date "2001-01-01" @default.
- W1746797279 modified "2023-09-26" @default.
- W1746797279 title "HydraScalar: A Multipath-Capable Simulator" @default.
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