Dark silicon and the end of multicore scaling

8 years 9 months ago
Dark silicon and the end of multicore scaling
Since 2005, processor designers have increased core counts to exploit Moore’s Law scaling, rather than focusing on single-core performance. The failure of Dennard scaling, to which the shift to multicore parts is partially a response, may soon limit multicore scaling just as single-core scaling has been curtailed. This paper models multicore scaling limits by combining device scaling, single-core scaling, and multicore scaling to measure the speedup potential for a set of parallel workloads for the next five technology generations. For device scaling, we use both the ITRS projections and a set of more conservative device scaling parameters. To model singlecore scaling, we combine measurements from over 150 processors to derive Pareto-optimal frontiers for area/performance and power/performance. Finally, to model multicore scaling, we build a detailed performance model of upper-bound performance and lowerbound core power. The multicore designs we study include singlethreaded CPU-lik...
Hadi Esmaeilzadeh, Emily R. Blem, Renée St.
Added 21 Aug 2011
Updated 21 Aug 2011
Type Journal
Year 2011
Where ISCA
Authors Hadi Esmaeilzadeh, Emily R. Blem, Renée St. Amant, Karthikeyan Sankaralingam, Doug Burger
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