On 10/10/2012 10:49 AM, Ivan M wrote: > http://www.sciencemag.org/content/338/6103/26.full?rss=1 > > "Japan's K computer made headlines in June 2011 as the world's fastest > supercomputer and again last November when it became the first > computer to top 10 petaflops—or 10 quadrillion calculations per > second—solving a benchmark mathematical problem. (...) And now, after > a year of testing and software development, as the $1.4 billion K > computer is put to work on real-world problems, some scientific users > say it was too narrowly built for speed." > > Interesting claim. What kind of architecture structure would benefit > Linpack and would hinder real-world applications? >
One that has lousy I/O performance is one example. Another would be one that takes a lot of memory, especially on a per-node basis (ie, there's only so far you can decompose the data across nodes). I'm no expert on Linpack, but I don't think it is a memory-intensive benchmark. -- Prentice _______________________________________________ Beowulf mailing list, [email protected] sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
