“How would you build a thousand trillion floating point operations per second computer?,” asks DARPA.
That is easy, we already have the Cray Jaguar a supercomputer that has 1.75 petaFLOPS of performance. What DARPA wants is innovative ideas on how to cram a petaFLOP into a single rack and use a maximum of 57 kilowatts. For comparison a Radeon 5870 uses 188 watts and achieves 2.72 TFLOPS (single precision) and 544 GLFOPS (double precision).
It seems DARPA is not happy with the plans IBM, Cray and other HPC manufacturers are tackling the problem.
Remember to let them know Hardware Heaven sent you.
Source: The Register