That's NAK (NVIDIA Athlon cluster in Kentucky, pronounced "N-Ack"). It's a 64-node NVIDIA GPU cluster built using components recycled from KASY0. At a total cost of less than $6,000, it's a very green way to demonstrate our principle of code running within GPUs such that most of the time nothing but power and ground are asked of the host systems. Want to know more? Try these links:

More will be posted here shortly....

Live View

That's our machine room; NAK is on the left of the image. This view is updated roughly every 45s. It is captured under computer control using an RS232C interface to command a Nikon 950 digital camera with 183-degree fisheye lens. Amazingly, that digital still camera has taken well over 3,000,000 images and is still working!

Contact Info

If you have any questions or comments, contact:

Professor Hank Dietz, James F. Hardymon Chair in Networking
College of Engineering
Electrical and Computer Engineering Department
453 Anderson Tower
(Office 469 Anderson Tower, Labs 672, 695, and 577 Anderson Tower)
Lexington, KY 40506-0046

Office Phone: (859) 257 4701
Fax :         (859) 257 3092
Home URL:

The Aggregate. The only thing set in stone is our name.