General Power Levels:
First results about the general power consumption values reported include:
* Average Power consumption of a TOP10 system is 1.32 Mwatt and average power efficiency is 248 Mflop/s/Watt.
* Average Power consumption of a TOP50 system is 908 Kwatt and average power efficiency is 193 Mflop/s/Watt.
* Average Power consumption of a TOP500 system is 257 kwatt and average power efficiency is 122 Mflop/s/Watt.
One possible explanation for the decreasing efficiency with rank is that only newer systems and technologies with better efficiencies can be found toward the top of the list. Toward the end of the list a mixture of newer and older technologies lowers the average efficiency level.
Power Efficiencies of Technologies:
Power efficiency values of different systems in the TOP500 are influenced by a variety of factors such as power consumption, Linpack efficiency, parallel scaling behavior, and size of system measured. With these restrictions in mind, we can analyze the collected data and find in general that:
* Most energy efficient supercomputers are based on:
o IBM QS22 Cell processor blades up to 488 Mflop/s/Watt,
o IBM BlueGene/P systems up to 371 Mflop/s/Watt
* Intel Harpertown quad-core blades are catching up fast:
o IBM BladeCenter HS21with low-power processors (L5420) up to 265 Mflop/s/Watt
o SGI Altix ICE 8200EX Xeon nodes (E5472) with high efficient Linpack up to 240 Mflop/s/Watt
o Hewlett-Packard Cluster Platform 3000 BL2x220 with double density blades up to 227 Mflop/s/Watt
* These systems are already ahead of BlueGene/L (up to 210 Mflop/s/Watt).
