Author: Robert Hyatt
Date: 10:28:54 07/09/02
Go up one level in this thread
On July 09, 2002 at 12:06:38, Joshua Lee wrote: >Hi. You should see all this talk about the new Itanium2 being so much faster >than the Power4. This is estimated at 2times faster than the Athlons or P4's. >6.4GB/s Bandwidth and DDR memory but how does this Compare with the Cray's of >Old?? It doesn't... For example, the C90 had a 2 nanosecond clock. The cpu could read two 64 bit words and write one 64 bit word per clock cycle, per cpu. With 16 cpus, that is 16 * 24 * 500000000 bytes per second and that can be _sustained_ forever. Compare that to any PC you want and you see why (a) the supercomputers are so expensive and (b) why the micros have absolutely no chance at catching them in terms of speed. > What about the Itaniums and Opteron's of the world supposed to be able to >run your 32bit apps? Wouldn't Fritz work on it Now i expect no i demand 64bit >chessprograms and i would like them now. What new techniques would they be able >to use? > >Thankyou > > > > > > >man i wish my cat would quit whining
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