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Lecture 20 Top 500 EN 600.320/420/620 Instructor: Randal Burns 12 - PowerPoint PPT Presentation

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Lecture 20 Top 500 EN 600.320/420/620 Instructor: Randal Burns 12 March 2019 Department of Computer Science, Johns Hopkins University Images in lecture from https://www.top500.org/static/medi a/uploads/top500_ppt_201806.pdf TOP500

  1. Lecture 20 Top 500 EN 600.320/420/620 Instructor: Randal Burns 12 March 2019 Department of Computer Science, Johns Hopkins University Images in lecture from https://www.top500.org/static/medi a/uploads/top500_ppt_201806.pdf

  2. TOP500 http://ornl.gov/info/ornlreview/v45_3_12/images/a04_p10_lrg.jpg Fastest 500 computing machines l According to LINPACK benchmark – Controversial l Other metrics represent other problems – Green500: best computing power per watt – l Currently ”Summit” ORNL, US 122 TFLOP/s, 2.2M cores, 8.8 kW – IBM Power 8 + NVidia V100 GPUs – #2 � Sunway TaihuLight � Xiwu Chine l 93 TFlops, 10,649,000 cores, 15,371 kW – All Chinese hardware – Lecture 20: TOP 500

  3. Top500 Growth (Exascale coming) https://www.top500.org/static/media/uploads/top500_ppt_201806.pdf Lecture 20: TOP 500

  4. Top500: Flops Lecture 20: TOP 500

  5. Top500 and Moore’s Law Lecture 20: TOP 500

  6. Top 500 Evolution Lecture 20: TOP 500

  7. Who has supercomputers? l Industry increasingly Lecture 20: TOP 500

  8. The Rise of Accelerators l Industry increasingly Lecture 20: TOP 500

  9. Top 500 Conclusions l Exaflop in reach l Accelerators are ubiquitous l Despite US reemergence, China dominates – 40% of systems – Chinese made hardware Lecture 20: TOP 500

  10. Green 500 l GFlops/watt – Power efficiency will be the limited factor in reaching exascale computing – Also co-branded as environmentally friendly Lecture 20: TOP 500

  11. What’s a Zettascaler?? l PEZY-SCx accelerator – 3 level hierarchy of computer 128 cities x 4 villages x 4 cores l L2 shared @ ”city” l L1 shared @ “village” l ExaScaler flouro-carbon based liquid cooling l TCI stack die RAMs All of this creates remarkable density Lecture 20: TOP 500

  12. Green Trends Architectures Lecture 20: TOP 500

  13. What else is going on? l Convergence between TOP500 and Green 500 – Power and cooling density limits overall performance – Can’t make a fast machine that’s not efficient l T#1 = G#5 Lecture 20: TOP 500

  14. Green Trends Efficiency Lecture 20: TOP 500

  15. Exascale at 25 MW? Lecture 20: TOP 500

  16. Final Comments l Multiple Chinese manufacturers l Lenovo doing substantial business outside China – 21 in US, 23 in rest of world l Slow down in performance growth – More focus at top machines – Longer lifetime on TOP500 (2x) – I’m not totally convinced that this is not (death of) Moore’s law related? Lecture 20: TOP 500

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