The TOP500 supercomputers list ranks the 500 most powerful known computer systems in the world. The project was started in 1993 and publishes an updated list of the supercomputers twice a year – in June and November of each year (ISC and SC conferences). The TOP500 project aims to provide a reliable basis for tracking and detecting trends in high-performance computing and bases rankings on the Linpack benchmark. The TOP500 list is compiled by Hans Meuer of the University of Mannheim, Germany, Jack Dongarra of the University of Tennessee, Knoxville, and Erich Strohmaier and Horst Simon of NERSC/Lawrence Berkeley National Laboratory.
The next TOP500 list, the 38th list, will be published at the coming SC’11 conference and the deadline for submissions is Oct 15th. 9 days are left for organizations around the world to submit their new systems. The estimated entry level performance for the 38th list is around 52TFlops. The current #1 system on the TOP500 list is the Fujitsu K-computer with 8Petaflops, and it might be still the #1 on the 38th list as well.
If you want to try and predict the coming TOP500 list results, and maybe win an iPAD2, check out http://top500.delphit.com/. Good luck!