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Explore the shift from traditional base cores to enhanced cores in the multicore era, emphasizing the need for increased parallelism and optimal core design. Learn about trends in core microarchitecture research and the impact on performance. This panel discussion from ISCA 2010 in France delves into the concept that while the traditional microarchitecture may be considered dead, the future lies in innovative microarchitecture designs. Understand Amdahl’s Law and how to achieve maximum speedup for symmetric multicore chips by concentrating on enhancing parallelism and core design.
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La microarchitecture est morte. Longue vie à la microarchitecture! ISCA 2010 Panel, St. Malo, France (Microarchitecture isdead.Long live microarchitecture!)
HPCA 2007 Debate [IEEE Micro 11-12/2007] • Amdahl’s Law and the Multicore Era [Computer 7/2008] • Software F parallel & 1-F sequential • Base core 1 resource 1 performance • Enhanced core R resources performance • N resources per chip N/R symmetric cores
Speedup for Symmetric Multicore Chips 99% 90% 100% Fraction Parallel: 16 Base Cores 14 7 16 256 Base Cores 80 27 256 Concentrate on Increasing Parallelism!
Asymmetric Optimal Core Size for Symmetric Multicore Chips 99% 90% 100% Fraction Parallel: 16 Base Cores 1 2 1 1 41 118 256 Base Cores 1 3 28 Concentrate on Core Design!
Trends in Core Microarchitecture Research Credit Dan Gibson; Blame Mark Hill, 6/2010 5
La microarchitecture est morte. Longue vie à la microarchitecture! ISCA 2010 Panel, St. Malo, France (Microarchitecture isdead.Long live microarchitecture!)