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McPAT : An Integrated Power, Area, and Timing Modeling Framework for Multicore and Manycore Architectures

McPAT : An Integrated Power, Area, and Timing Modeling Framework for Multicore and Manycore Architectures. Runjie Zhang Dec.3. S. Li et al. in MICRO’09. Motivation. “Tools both limit and drive research directions” New demands Multicore/ manycore Evaluate power, timing and area

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McPAT : An Integrated Power, Area, and Timing Modeling Framework for Multicore and Manycore Architectures

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  1. McPAT: An Integrated Power, Area, and Timing Modeling Framework for Multicore and Manycore Architectures Runjie Zhang Dec.3 S. Li et al. in MICRO’09

  2. Motivation • “Tools both limit and drive research directions” • New demands • Multicore/manycore • Evaluate power, timing and area • Different source of power dissipation • Deep-submicron

  3. Related Work • Wattch: • Enabling a tremendous surge in power-related research • Orion: • Combined Wattch’s core power model with a router power model • CACTI: • First tool in rapid power, area, and timing estimation

  4. What’s wrong with previous work? • Wattch • No timing and area models • Only models dynamic power consumption • Use simple linear scaling model • Orion2 • No short circuit power or timing • “Incomplete” • CACTI • ???

  5. Contributions • First integrated power, area, and timing modeling framework • Model all three types of power dissipation • Complete, integrated solution for multithreaded and multicore processor power • Deep-submicron tech. that no longer linear

  6. Overview

  7. Integrated Approach

  8. Hierarchical Approach

  9. Architecture Level

  10. Circuit Level

  11. Validation

  12. Validation

  13. Scaling & Clustering New generation: Double # of cores Keep the same micro-architecture

  14. Parameters and Benchmarks

  15. Area and Power

  16. Performance and Efficiency

  17. Performance and Efficiency

  18. In-order vs. OOO with M5

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