The document discusses the GA144, the smallest computer cluster in the world. It is a single-chip system with 144 processing nodes, each with 20KB of memory, capable of 96 billion operations per second while consuming only 14-650 milliwatts of power. It provides parallel processing capabilities on a small scale and is being used for applications like cryptography, signal processing, and neural networks.

1. The Smallest Cluster
in the World
Tim Lossen

2. en.wikipedia.org/wiki/Jaguar_(computer)

3. Jaguar
• Oak Ridge National Laboratory, USA
• 26.520 nodes

4. Jaguar
• Oak Ridge National Laboratory, USA
• 26.520 nodes
- 224.162 cores (AMD Opteron)

5. Jaguar
• Oak Ridge National Laboratory, USA
• 26.520 nodes
- 224.162 cores (AMD Opteron)
- 360 TB memory

6. “A computer cluster is a group of
linked computers, working together
closely.”
en.wikipedia.org/wiki/Cluster_(computing)

7. ~245.000 active nodes (January 2011)

8. win.tue.nl/~bdeweger/PS3Lab/

9. flickr.com/photos/tlossen/3338496926

11. 10 mm

12. GA144
• single chip, 88 pins

13. GA144
• single chip, 88 pins
• 18 x 8 = 144 nodes

14. greenarrays.com

15. greenarrays.com

16. GA144
• single chip, 88 pins
• 18 x 8 = 144 nodes
- 20 KB memory

17. GA144
• single chip, 88 pins
• 18 x 8 = 144 nodes
- 20 KB memory
- 96 billion operations / second

18. GA144
• single chip, 88 pins
• 18 x 8 = 144 nodes
- 20 KB memory
- 96 billion operations / second
- 14 microwatts to 650 milliwatts

19. GA144
• single chip, 88 pins
• 18 x 8 = 144 nodes
- 20 KB memory
- 96 billion operations / second
- 14 microwatts to 650 milliwatts
• $20

20. colorforth.com/blog.htm

21. F18A
• 18 bit

22. F18A
• 18 bit
• dual stack architecture
- 2 x 8 words (circular)

23. F18A
• 18 bit
• dual stack architecture
- 2 x 8 words (circular)
• 64 words RAM

24. 0,5
mm
greenarrays.com

25. F18A
• 18 bit
• dual stack architecture
- 2 x 8 words (circular)
• 64 words RAM
• <2 nanoseconds / operation
- no clock!

26. greenarrays.com

27. rigaux.org/language-study/diagram.html

28. rigaux.org/language-study/diagram.html

29. Charles “Chuck” Moore

30. Communication
• (2 to 4) 18-bit internode links

31. Communication
• (2 to 4) 18-bit internode links
• various external I/O options
- GPIO, SERDES, SPI ...

32. Communication
• (2 to 4) 18-bit internode links
• various external I/O options
- GPIO, SERDES, SPI ...
• node can suspend on read / write
- also multiport

33. Communication
• (2 to 4) 18-bit internode links
• various external I/O options
- GPIO, SERDES, SPI ...
• node can suspend on read / write
- also multiport
• port execution

34. greenarrays.com/home/documents/pub/AP001-MD5.html

35. Applications
• cryptography

36. Applications
• cryptography
• digital signal processing
- example: hearing aid

37. Applications
• cryptography
• digital signal processing
- example: hearing aid
• neural networks

38. Applications
• cryptography
• digital signal processing
- example: hearing aid
• neural networks
• sensor nodes (“motes”)
- energy harvesting!

39. Q&A