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Greener Search

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A very informal talk on FPGA-accelerated search, from 2009!
Research by Wim Vanderbauwhede and Leif Azzopardi

Veröffentlicht in: Daten & Analysen
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Greener Search

  1. 1. Greener Search
  2. 2. 1 cup of tea = 10 gram CO2 (boiling 250 ml water)
  3. 3. “Performing two Google searches from a desktop computer can generate about the same amount of carbon dioxide as boiling a kettle for a cup of tea, according to new research.” (The Sunday Times)
  4. 4. 2 x = 1 x (The Sunday Times)
  5. 5. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 0 10 20 30 40 50 60 70 Google searches per day average: 25 #searches/day
  6. 6. But maybe you're an espresso person ...
  7. 7. However ... the original Sunday Times article was factually incorrect
  8. 8. 25 x = 1 x
  9. 9. 6 x = 1 x
  10. 10. So ... no big deal?
  11. 11. Google handles about 1,000,000,000,000 searches per year
  12. 12. To do so, Google deploys an estimated 500,000 servers in about 50 data centre worldwide (these are rough estimates, Google isn't telling)
  13. 13. Note the cooling plants ... Google's data centres in Dalles, Oregon
  14. 14. Each data centre consumes about 50MW Cooling requires most of the power Infrastructure cost is about $22,000/kW Reducing power consumption can result in huge cost savings
  15. 15. Reduce costs, save the planet
  16. 16. We (Leif & Wim) have developed a Greener Search Solution: FPGA-accelerated search
  17. 17. The Sinner: Intel CPU 120W (at least)
  18. 18. The Saviour: Xilinx FPGA 3W (at most)
  19. 19. Implementing IR algorithms on FPGA: 20x faster @ 10% of the power!
  20. 20. Some results
  21. 21. Effect on data centre cost 0 2 4 6 8 10 12 14 16 $0 $10,000,000 $20,000,000 $30,000,000 $40,000,000 $50,000,000 $60,000,000 Total data centre cost 1000 servers, cost accumulated over 15 years Total Cost – no FPGA Total Cost – FPGA FPGA Yearly License License per FPGA Years Cost($)
  22. 22. 5000 x = 1 x With Greener SearchLW
  23. 23. Enjoy!

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