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La microarchitecture est morte. Longue vie à la microarchitecture! ISCA 2010 Panel, St. Malo, France (Microarchitecture is dead. Long live microarchitecture!)

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Presentation on theme: "La microarchitecture est morte. Longue vie à la microarchitecture! ISCA 2010 Panel, St. Malo, France (Microarchitecture is dead. Long live microarchitecture!)"— Presentation transcript:

1 La microarchitecture est morte. Longue vie à la microarchitecture! ISCA 2010 Panel, St. Malo, France (Microarchitecture is dead. Long live microarchitecture!) Mark D. Hill, ModeratorUniv. of Wisconsin-Madison Stephen W. KecklerNvidia & Univ. of Texas at Austin Christos E. KozyrakisStanford Univ. Mark H. OskinUniv. of Washington Yale N. PattUniv. of Texas at Austin Burton J. SmithMicrosoft Charles P. ThackerMicrosoft Research

2 HPCA 2007 Debate [IEEE Micro 11-12/2007] Amdahl’s Law and the Multicore Era [Computer 7/2008] (1)Software F parallel & 1-F sequential (2)Base core 1 resource  1 performance (3)Enhanced core R resources  performance (4)N resources per chip  N/R symmetric cores

3 Speedup for Symmetric Multicore Chips Fraction Parallel: 90% 99% 100% 16 Base Cores 256 Base Cores 7 14 16  Concentrate on Increasing Parallelism!

4 Optimal Core Size for Symmetric Multicore Chips Fraction Parallel: 90% 99% 100% 16 Base Cores 256 Base Cores 2 1 1  Concentrate on Core Design! Asymmetric 1 41

5 Trends in Core Microarchitecture Research 5 Credit Dan Gibson; Blame Mark Hill, 6/2010

6 La microarchitecture est morte. Longue vie à la microarchitecture! ISCA 2010 Panel, St. Malo, France (Microarchitecture is dead. Long live microarchitecture!) Mark D. Hill, ModeratorUniv. of Wisconsin-Madison Stephen W. KecklerNvidia & Univ. of Texas at Austin Christos E. KozyrakisStanford Univ. Mark H. OskinUniv. of Washington Yale N. PattUniv. of Texas at Austin Burton J. SmithMicrosoft Charles P. ThackerMicrosoft Research


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