[BALU] 64 bit systems

jason gilbert jason at doozer.com
Fri Jun 8 09:21:38 CDT 2007


On Thu, Jun 07, 2007 at 11:57:34PM -0500, Thomas Stover wrote:
> Briefly here is the skinny on 64bit:
> -first its really a lie - x86_64 is only 48 hardware bits! (so 50% more 
> data can be transfered in and out of the core each clock cycle)
> -native 64bit operations (this means that for example when redesigned, 
> certain kinds of complex computational algorithms could be orders of 
> magnitude faster)
> -goodies like native 128bit floating point operations (this means a 
> program could do some crazy dsp or something way faster) (these 
> operations actually take more than one clock cycle to complete)
> -fix to the 32bit unix time problem
> -my personal favorite: mmap() files into a 64bit address space - oh yeah!

- more registers

-- 
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