The latest petaflop supercomputers use 3-7 megawatts of power.
Managing power issues is one of the key challenges for future exaflop supercomputers.
There are four challenges where current trends are lacking:
1. Energy and Power
2. Memory and Storage
3. Concurrency and Locality
4. Resiliency (handling faults, keeping error rates down)
Various architecture changes to current systems were examined at the Extreme computing conferences that looked at making Zettaflop supercomputers.
Tensilica’s reconfigurable processors and circuits are considered a candidate solution to making fast and energy efficient exascale computers.
A [email protected] style network of teraflop class GPGPU systems could achieve exascale levels as early as 2010. One million teraflop class GPGPUs combined.