Hi John, On Tuesday 03 February 2009 18:25:04 John Hearns wrote: > http://www.theregister.co.uk/2009/02/03/llnl_buys_ibm_supers/ > > I make this 400 cores per 1U rack unit. How is the counting being done > here?
Even for the intermediate "development" system, Dawn, the article quotes 150,000 cores in 36 racks. Which makes about 100 cores in a 1U space. That's a hell of a density... > This article says 4096 cores per rack: > http://www.engadget.com/2009/02/03/ibms-sequoia-20x-faster-than-the-worlds- >fastest-supercomputer/ That seems more rational - 93 racks adds up to 380928 > cores An even weirdest number around this system is the amount of memory listed. 1.6TB of main memory for 1.6 million cores, that's a mere 1 MB per core... I hope it's a P, not a T. Cheers, -- Kilian _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
