Author: Jeremiah Penery
Date: 19:19:53 08/26/03
Go up one level in this thread
On August 26, 2003 at 20:02:19, Eugene Nalimov wrote: >On August 26, 2003 at 19:01:30, Dan Andersson wrote: > >> Uck! A real bummer since the AMD x87 is a stellar performer. >> >>MvH Dan Andersson > >I just looked at the Spec2k, and I did not notice AMD x87 is stellar performer: > >http://www.spec.org/cpu2000/results/res2003q3/cpu2000-20030728-02428.html >http://www.spec.org/cpu2000/results/res2003q3/cpu2000-20030630-02310.html >http://www.spec.org/cpu2000/results/res2003q2/cpu2000-20030505-02137.html Neither of those other CPUs (Itanium and Power) is crippled by a stupid ISA. :) They are also running native (64-bit) binaries, which Opteron was not. Further, Power and Itanium both have much more cache and cache bandwidth than Opteron (Power4 uses 128MB). The x86/7 ISA alone is limiting enough to make any CPU running it look less than stellar compared to those other CPUs, even if it was theoretically much faster. I still think it's absolutely stupid not to context switch x87 code. If I were a conspiracy theorist, I might have a lot to say about it. :)
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