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25th TOP500 List Released
Chris Vaughan writes "The 25th edition of the TOP500 list of the world's fastest supercomputers was released today (June 22, 2005) at the 20th International Supercomputing Conference (ISC2005) in Heidelberg Germany. The No. 1 position was again claimed by the previously mentioned BlueGene/L System. At present, IBM and Hewlett-Packard sell the bulk of systems at all performance levels of the TOP500. The U.S is clearly the leading consumer of HPC systems with 294 of the 500 systems installed there (up from 267 six months ago)."
The list can be found here:6
http://www.top500.org/lists/plists.php?Y=2005&M=0
You'd think that it would be a good idea to actually link to the html list, or the xml list, or the pretty charts.
The press release is interesting too.
Karma: SELECT `karma` FROM `users` WHERE `userid`=138474;
It all depends on the system architecture and the type of problem being solved. Certain problems will adhere better to certain architectures and thus allow for a smaller gap between the theoretical and actual performance. The gaps can also be inherent in the architecture itself (e.g. communications bandwidth like you said).